Re: [Qgis-user] Polygon next to road search term

[Jon via Qgis-user]

Thanks David, When I go to intersect the buffered layer with the
polygon layer, what am I looking for?

Would it be:
Line Intersections
Intersection

In the Processing Toolbox and any settings that need to be set before
running, like iterate over each one?

Jon

-Original Message-
From: David Strip 
To: j...@destar.net, Qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Polygon next to road search term
Date: Wed, 14 Sep 2022 09:39:41 -0600

  My starting approach would be to take the road layer and buffer that out by 
some small distance - say 5 meters. (Note that you have to be working in a 
projected coordinate system for the buffer distance to have useful meaning.) I 
would then intersect the buffered layer with the polygon (lot) layer. The 
resulting intersections will be the overlaps between the buffered roads and the 
polygons. The attribute table will contain a list of all the intersections and 
each row of the table will contain the attributes of both the lots and the 
roads, so if the lots and roads have attributes with meaningful names, you will 
have a list of all lots that intersect roads and the names of the road it 
intersects with.
 
 You could also try extract by location from the processing toolbox. This would 
give you a layer of the original lots (polygons) that intersect some road, but 
won't tell you which road.
 
 On 9/13/2022 10:19 PM, Jon via Qgis-user wrote: 
> I would want the polygon to have road access. So you should be able to
> access the polygon firectly from a road. Just a corner touching may
> work but that would depend on an easement and I am having enough
> trouble just trying to figure out what I should be searching on without
> throwing that in as well.
> 
> So at this point, the polygon should be able to be accessed by the road
> line. So possibly 20' of the road line is touching the polygon.
> 
> -Original Message-
> From: David Strip 
> To: j...@destar.net, Qgis-user@lists.osgeo.org
> Subject: Re: [Qgis-user] Polygon next to road search term
> Date: Tue, 13 Sep 2022 21:12:01 -0600
> 
>   Is a polygon "next to a road" because one (or more) edges of the polygon is 
> exactly coincident with the road line? Or is it within some distance of the 
> road line? These lead to different solutions, but unless your data is very 
> precise, asking for the boundary to be exactly coincident with a road line is 
> not going to be very robust.Does your road polyline feature have a road 
> width? If so, does that factor into "next to"?
>  
>  
>  On 9/13/2022 5:26 PM, Jon via Qgis-user wrote: 
>  
> > I am trying to figure out if a property that is a polygon is next to a
> > polyline (road). I am not well versed with QGIS and every search I do
> > seems to tell me how to map a polygon onto a road or convert polylines
> > to a polygon. I am not sure what exactly I need to search on to find
> > some documentation on how to do what I am looking to do.
> > 
> > What should I be searching on to find if a property that has 4 sides
> > and is a polygon is next to a road? Is what I am trying to find called
> > something specific and that is why I am not finding?
> > 
> > Thanks for any help,
> > 
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
 
 

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon next to road search term

[David Strip via Qgis-user]

  
  
My starting approach would be to take the road layer and buffer that
out by some small distance - say 5 meters. (Note that you have to be
working in a projected coordinate system for the buffer distance to
have useful meaning.) I would then intersect the buffered layer with
the polygon (lot) layer. The resulting intersections will be the
overlaps between the buffered roads and the polygons. The attribute
table will contain a list of all the intersections and each row of
the table will contain the attributes of both the lots and the
roads, so if the lots and roads have attributes with meaningful
names, you will have a list of all lots that intersect roads and the
names of the road it intersects with.

You could also try extract by location from the processing toolbox.
This would give you a layer of the original lots (polygons) that
intersect some road, but won't tell you which road.

On 9/13/2022 10:19 PM, Jon via Qgis-user wrote:

  I would want the polygon to have road access. So you should be able to
access the polygon firectly from a road. Just a corner touching may
work but that would depend on an easement and I am having enough
trouble just trying to figure out what I should be searching on without
throwing that in as well.

So at this point, the polygon should be able to be accessed by the road
line. So possibly 20' of the road line is touching the polygon.

-Original Message-
From: David Strip 
To: j...@destar.net, Qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Polygon next to road search term
Date: Tue, 13 Sep 2022 21:12:01 -0600

  Is a polygon "next to a road" because one (or more) edges of the polygon is exactly coincident with the road line? Or is it within some distance of the road line? These lead to different solutions, but unless your data is very precise, asking for the boundary to be exactly coincident with a road line is not going to be very robust.Does your road polyline feature have a road width? If so, does that factor into "next to"?
 
 
 On 9/13/2022 5:26 PM, Jon via Qgis-user wrote: 

  
I am trying to figure out if a property that is a polygon is next to a
polyline (road). I am not well versed with QGIS and every search I do
seems to tell me how to map a polygon onto a road or convert polylines
to a polygon. I am not sure what exactly I need to search on to find
some documentation on how to do what I am looking to do.

What should I be searching on to find if a property that has 4 sides
and is a polygon is next to a road? Is what I am trying to find called
something specific and that is why I am not finding?

Thanks for any help,

Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

  



  

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon next to road search term

[Jon via Qgis-user]

I would want the polygon to have road access. So you should be able to
access the polygon firectly from a road. Just a corner touching may
work but that would depend on an easement and I am having enough
trouble just trying to figure out what I should be searching on without
throwing that in as well.

So at this point, the polygon should be able to be accessed by the road
line. So possibly 20' of the road line is touching the polygon.

-Original Message-
From: David Strip 
To: j...@destar.net, Qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Polygon next to road search term
Date: Tue, 13 Sep 2022 21:12:01 -0600

  Is a polygon "next to a road" because one (or more) edges of the polygon is 
exactly coincident with the road line? Or is it within some distance of the 
road line? These lead to different solutions, but unless your data is very 
precise, asking for the boundary to be exactly coincident with a road line is 
not going to be very robust.Does your road polyline feature have a road width? 
If so, does that factor into "next to"?
 
 
 On 9/13/2022 5:26 PM, Jon via Qgis-user wrote: 
> I am trying to figure out if a property that is a polygon is next to a
> polyline (road). I am not well versed with QGIS and every search I do
> seems to tell me how to map a polygon onto a road or convert polylines
> to a polygon. I am not sure what exactly I need to search on to find
> some documentation on how to do what I am looking to do.
> 
> What should I be searching on to find if a property that has 4 sides
> and is a polygon is next to a road? Is what I am trying to find called
> something specific and that is why I am not finding?
> 
> Thanks for any help,
> 
> Jon
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
 

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon next to road search term

[David Strip via Qgis-user]

  
  
Is a polygon "next to a road" because one (or more) edges of the
polygon is exactly coincident with the road line? Or is it within
some distance of the road line? These lead to different solutions,
but unless your data is very precise, asking for the boundary to be
exactly coincident with a road line is not going to be very
robust.Does your road polyline feature have a road width? If so,
does that factor into "next to"?


On 9/13/2022 5:26 PM, Jon via Qgis-user wrote:

  I am trying to figure out if a property that is a polygon is next to a
polyline (road). I am not well versed with QGIS and every search I do
seems to tell me how to map a polygon onto a road or convert polylines
to a polygon. I am not sure what exactly I need to search on to find
some documentation on how to do what I am looking to do.

What should I be searching on to find if a property that has 4 sides
and is a polygon is next to a road? Is what I am trying to find called
something specific and that is why I am not finding?

Thanks for any help,

Jon
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user



  

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon next to road search term

[Jon via Qgis-user]

I am trying to figure out if a property that is a polygon is next to a
polyline (road). I am not well versed with QGIS and every search I do
seems to tell me how to map a polygon onto a road or convert polylines
to a polygon. I am not sure what exactly I need to search on to find
some documentation on how to do what I am looking to do.

What should I be searching on to find if a property that has 4 sides
and is a polygon is next to a road? Is what I am trying to find called
something specific and that is why I am not finding?

Thanks for any help,

Jon
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[Thayer Young via Qgis-user]

 to quote my favorite movie: "Rock and Roll, hello Cleveland!"

-Thayer

On Tuesday, June 21, 2022 at 04:39:28 PM EDT, Sebastian Gutwein 
 wrote:  
 
 And even easier is to put them all in a group then copy the style from one 
layer and paste it onto the group. This will apply the style to all layers in 
the group. 

On Tue, Jun 21, 2022 at 3:22 PM Thayer Young via Qgis-user 
 wrote:

 A method that is a little easier than saving out the style file, is that you 
can just right click on the layer that you styled, then third from the bottom 
in the menu select:   Styles: Copy Style: All Style CategoriesAnd then you can 
paste the style to the rest of your layers using:  Styles: Paste Style: All 
Style Categories
-Thayer


On Tuesday, June 21, 2022 at 03:00:36 PM EDT, 
qgis-user-requ...@lists.osgeo.org  wrote: 
i have four different geologic maps that i have imported as shapefiles.
The files have filled polygons that have the name of the geologic formation
in the attribute tables.  i would like to have a common colour for each
polygon of identical age/name for all the map sheets.  Each map sheet has a
similar list of formations, but some of the formations are different for
each map sheet.
What is the most efficient way to make the identically named polygons
displayed with the same colour?  Should i add a column in each attribute
table and put a formation code in for each one manually or can i add an RGB
colour for each formation in the attribute table? or, do i need to
categorize and  classify these in the layer properties table after i have
added formation code in the attribute table?
i hope that my question is clear.

-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
by...@conjugategeo.com
Cell:4037108414
-- next part --
An HTML attachment was scrubbed...
URL: 


--


  ___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user



-- 
___
Sebastian "Bas* " Gutwein*rhymes with Josh 

Regenerative Design Group
1 Chevalier Ave
Greenfield, Ma 01301
Web: regenerativedesigngroup.com
(631) 241-1018

Look close, think big, make change.   ___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[Sebastian Gutwein via Qgis-user]

And even easier is to put them all in a group then copy the style from one
layer and paste it onto the group. This will apply the style to all layers
in the group.

On Tue, Jun 21, 2022 at 3:22 PM Thayer Young via Qgis-user <
qgis-user@lists.osgeo.org> wrote:

> A method that is a little easier than saving out the style file, is that
> you can just right click on the layer that you styled, then third from the
> bottom in the menu select:   Styles: Copy Style: All Style Categories
> And then you can paste the style to the rest of your layers using:
> Styles: Paste Style: All Style Categories
>
> -Thayer
>
>
> On Tuesday, June 21, 2022 at 03:00:36 PM EDT,
> qgis-user-requ...@lists.osgeo.org 
> wrote:
>
> i have four different geologic maps that i have imported as shapefiles.
> The files have filled polygons that have the name of the geologic formation
> in the attribute tables.  i would like to have a common colour for each
> polygon of identical age/name for all the map sheets.  Each map sheet has a
> similar list of formations, but some of the formations are different for
> each map sheet.
> What is the most efficient way to make the identically named polygons
> displayed with the same colour?  Should i add a column in each attribute
> table and put a formation code in for each one manually or can i add an RGB
> colour for each formation in the attribute table? or, do i need to
> categorize and  classify these in the layer properties table after i have
> added formation code in the attribute table?
> i hope that my question is clear.
>
> --
> Byron Veilleux, MSc. P.Geo
> Conjugate Geologic Services Limited
> Calgary, Alberta Canada
> by...@conjugategeo.com
> Cell:4037108414
> -- next part --
> An HTML attachment was scrubbed...
> URL: <
> http://lists.osgeo.org/pipermail/qgis-user/attachments/20220620/c8b38539/attachment-0001.htm
> >
>
> --
>
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>


-- 
___
Sebastian "Bas* " Gutwein
*rhymes with Josh

Regenerative Design Group
1 Chevalier Ave
Greenfield, Ma 01301
Web: regenerativedesigngroup.com
(631) 241-1018

*Look close, think big, make change. *
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[Thayer Young via Qgis-user]

 A method that is a little easier than saving out the style file, is that you 
can just right click on the layer that you styled, then third from the bottom 
in the menu select:   Styles: Copy Style: All Style CategoriesAnd then you can 
paste the style to the rest of your layers using:  Styles: Paste Style: All 
Style Categories
-Thayer


On Tuesday, June 21, 2022 at 03:00:36 PM EDT, 
qgis-user-requ...@lists.osgeo.org  wrote: 
i have four different geologic maps that i have imported as shapefiles.
The files have filled polygons that have the name of the geologic formation
in the attribute tables.  i would like to have a common colour for each
polygon of identical age/name for all the map sheets.  Each map sheet has a
similar list of formations, but some of the formations are different for
each map sheet.
What is the most efficient way to make the identically named polygons
displayed with the same colour?  Should i add a column in each attribute
table and put a formation code in for each one manually or can i add an RGB
colour for each formation in the attribute table? or, do i need to
categorize and  classify these in the layer properties table after i have
added formation code in the attribute table?
i hope that my question is clear.

-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
by...@conjugategeo.com
Cell:4037108414
-- next part --
An HTML attachment was scrubbed...
URL: 


--


  ___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[David Strip via Qgis-user]

  
  
On 6/21/2022 8:37 AM, Firstname
  Lastname via Qgis-user wrote:


  I have gone that far, but I have four sets of maps
with similar units.  If I categorize them independantly, I have
to manually change the colours to make them consistent between
layers.   This is very time consuming and I was wondering if the
colour can added to the attribute table so that I can edit them
more easily 
  

  On Tue, Jun 21, 2022 at 2:56
AM 
wrote:
  
  

  
Context menu of your shapefile > properties >
  choose Tab "Symbology" > select "Categorize" in the
  first line with the attribute for the name of the
  geologic formation as the value in the second line.
  Click on "Classify" and style your polygons as
  appropriate.
 
Regards, Christine
  

  

  


Assuming all the shapefiles use the same name for the attribute you
will use for categorization, you can save the styling to a style
file from the Symbology tab of the Properties dialog. Do this once,
then load the style file to the other layers.
  

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[Firstname Lastname via Qgis-user]

Ok, thanks.

On Tue, Jun 21, 2022 at 8:43 AM David Strip 
wrote:

> On 6/21/2022 8:37 AM, Firstname Lastname via Qgis-user wrote:
>
> I have gone that far, but I have four sets of maps with similar units.  If
> I categorize them independantly, I have to manually change the colours to
> make them consistent between layers.   This is very time consuming and I
> was wondering if the colour can added to the attribute table so that I can
> edit them more easily
>
> On Tue, Jun 21, 2022 at 2:56 AM  wrote:
>
>> Context menu of your shapefile > properties > choose Tab "Symbology" >
>> select "Categorize" in the first line with the attribute for the name of
>> the geologic formation as the value in the second line. Click on "Classify"
>> and style your polygons as appropriate.
>>
>> Regards, Christine
>>
>
> Assuming all the shapefiles use the same name for the attribute you will
> use for categorization, you can save the styling to a style file from the
> Symbology tab of the Properties dialog. Do this once, then load the style
> file to the other layers.
>
-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
by...@conjugategeo.com
Cell:4037108414
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[Firstname Lastname via Qgis-user]

I have gone that far, but I have four sets of maps with similar units.  If
I categorize them independantly, I have to manually change the colours to
make them consistent between layers.   This is very time consuming and I
was wondering if the colour can added to the attribute table so that I can
edit them more easily

On Tue, Jun 21, 2022 at 2:56 AM  wrote:

> Context menu of your shapefile > properties > choose Tab "Symbology" >
> select "Categorize" in the first line with the attribute for the name of
> the geologic formation as the value in the second line. Click on "Classify"
> and style your polygons as appropriate.
>
> Regards, Christine
>
>
> *Gesendet:* Dienstag, 21. Juni 2022 um 05:19 Uhr
> *Von:* "Firstname Lastname via Qgis-user" 
> *An:* Qgis-user@lists.osgeo.org
> *Betreff:* [Qgis-user] polygon fills from different shapefiles
> i have four different geologic maps that i have imported as shapefiles.
> The files have filled polygons that have the name of the geologic formation
> in the attribute tables.  i would like to have a common colour for each
> polygon of identical age/name for all the map sheets.  Each map sheet has a
> similar list of formations, but some of the formations are different for
> each map sheet.
> What is the most efficient way to make the identically named polygons
> displayed with the same colour?  Should i add a column in each attribute
> table and put a formation code in for each one manually or can i add an RGB
> colour for each formation in the attribute table? or, do i need to
> categorize and  classify these in the layer properties table after i have
> added formation code in the attribute table?
> i hope that my question is clear.
>
> --
> Byron Veilleux, MSc. P.Geo
> Conjugate Geologic Services Limited
> Calgary, Alberta Canada
> by...@conjugategeo.com
> Cell:4037108414
> ___ Qgis-user mailing list
> Qgis-user@lists.osgeo.org List info:
> https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> https://lists.osgeo.org/mailman/listinfo/qgis-user
>
-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
by...@conjugategeo.com
Cell:4037108414
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon fills from different shapefiles

[Christine via Qgis-user]

Context menu of your shapefile > properties > choose Tab "Symbology" > select "Categorize" in the first line with the attribute for the name of the geologic formation as the value in the second line. Click on "Classify" and style your polygons as appropriate.

 

Regards, Christine

 
 

Gesendet: Dienstag, 21. Juni 2022 um 05:19 Uhr
Von: "Firstname Lastname via Qgis-user" 
An: Qgis-user@lists.osgeo.org
Betreff: [Qgis-user] polygon fills from different shapefiles


i have four different geologic maps that i have imported as shapefiles.  The files have filled polygons that have the name of the geologic formation in the attribute tables.  i would like to have a common colour for each polygon of identical age/name for all the map sheets.  Each map sheet has a similar list of formations, but some of the formations are different for each map sheet. 
What is the most efficient way to make the identically named polygons displayed with the same colour?  Should i add a column in each attribute table and put a formation code in for each one manually or can i add an RGB colour for each formation in the attribute table? or, do i need to categorize and  classify these in the layer properties table after i have added formation code in the attribute table?

i hope that my question is clear.

 
--


Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited

Calgary, Alberta Canada

by...@conjugategeo.com

Cell:4037108414





___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user



___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon fills from different shapefiles

[Firstname Lastname via Qgis-user]

i have four different geologic maps that i have imported as shapefiles.
The files have filled polygons that have the name of the geologic formation
in the attribute tables.  i would like to have a common colour for each
polygon of identical age/name for all the map sheets.  Each map sheet has a
similar list of formations, but some of the formations are different for
each map sheet.
What is the most efficient way to make the identically named polygons
displayed with the same colour?  Should i add a column in each attribute
table and put a formation code in for each one manually or can i add an RGB
colour for each formation in the attribute table? or, do i need to
categorize and  classify these in the layer properties table after i have
added formation code in the attribute table?
i hope that my question is clear.

-- 
Byron Veilleux, MSc. P.Geo
Conjugate Geologic Services Limited
Calgary, Alberta Canada
by...@conjugategeo.com
Cell:4037108414
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon labels

[Eric]

Hello.
Can I use the geometry generator to create a polygon label that is identical to 
the layer's polygon symbol?
Thanks,
Eric
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Grant Boxer]

I am playing around with data entry options and wondered if I can use the
graphical modeller to add data, e.g. x y coordinates as live input not from
a file. Can the data entry be saved as variable which can then be used in
the make polygon expression?

Cheers Grant



--
Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Richard Duivenvoorde]

As a variation on this...

You can create 'virtual layers' in QGIS, see:

https://docs.qgis.org/3.16/en/docs/user_manual/managing_data_source/create_layers.html?highlight=virtual#creating-virtual-layers

In attached zip file (a csv+a project file), 
I created a csv with 4 records with (just) 2 coordinates x1,y1,x2,y2.
Loaded it (as table) in QGIS (named it xyxy
Then created a Virtual Layer using one of the following 'Queries':

# a point:
SELECT make_point(x2, y2, 4326) as geometry, x1 as x1, y1 as y1, x2 as x2, y2 
as y2 FROM xyxy

# a polygon, one of these:

select geom_from_wkt( 'POLYGON(('||x1||' '||y1||',  '||x2||' '||y1||',   
'||x2||' '||y2||',  '||x1||' '||y2||',  '||x1||' '||y1||'))'  ) as geometry, x1 
as x1, y1 as y1, x2 as x2, y2 as y2  from xyxy


select st_geomfromtext( 'POLYGON(('||x1||' '||y1||',  '||x2||' '||y1||',   
'||x2||' '||y2||',  '||x1||' '||y2||',  '||x1||' '||y1||'))'  ) as geometry, x1 
as x1, y1 as y1, x2 as x2, y2 as y2  from xyxy

(in the dialog I selected 
Geometry column 'geometry'
Type 'Polygon'
CRS 'EPSG:4326'

In this way, you can just load the QGIS project, and the virtual layer will do 
the magic for you to create a polygon layer from your csv.

You can probably even use the project file as an input for QGIS-Server to serve 
it as WMS to you clients. 
(but you can also just share the project file).

Regards,

Richard Duivenvoorde


PS it took me some puzzling to get the query/expression right. At first I used 
concatting with '+' but you have to use the '||' as in expressions

PS2 you have to update the queries to reflect your 8 columns




On 11/26/20 4:02 PM, Totò Fiandaca wrote:
> From Processing:
> 
> search for Geometry by Expression:
> 1. as input layer put your file with the coordinates
> 2. and write this expression:
> 
>   make_polygon (
>   make_line (
>   make_point ("x1", "y1"),
>   make_point ("x2", "y2"),
>   make_point ("x3", "y3"),
>   make_point ("x4", "y4")
>   ))
> 
> and launch the geoprocess.
> 
> I used QGIS 3.16 Hannover
> 
> Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel  > ha scritto:
> 
> I have a csv/table that has a single row that contains some metadata as 
> well as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal 
> degree coordinates.
> 
> I want to import all of this data into QGIS and create a polygon from the 
> four points as a vector layer.  
> 
> What is the best way to do this?  I'm not a programmer or scripter really 
> and fairly new to QGIS.  
> 
> Thanks!
> 
> 
> *Ryan Peel*
> 
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org 
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user 
> 
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user 
> 
> 
> 
> 
> -- 
> *Ing. Salvatore Fiandaca*
> *mobile*.:+39 327.493.8955 
> *m*: *pigrecoinfin...@gmail.com *
> *C.F*.: FNDSVT71E29Z103G
> *P.IVA*: 06597870820
> *membro QGIS Italia - http://qgis.it/ *
> *socio GFOSS.it - *http://gfoss.it/ 
> *blog:** https://pigrecoinfinito.com/  
> FB: Co-admin - https://www.facebook.com/qgis.it/ 
> **   *
> *TW:  **https://twitter.com/totofiandaca 
> *
> 
> 43°51'0.54"N  10°34'27.62"E - EPSG:4326
> 
> “Se la conoscenza deve essere aperta a tutti,
> perchè mai limitarne l’accesso?” 
> R. Stallman
> 
> Questo documento, allegati inclusi, contiene informazioni di proprietà di 
> FIANDACA SALVATORE e deve essere utilizzato esclusivamente dal destinatario 
> in relazione alle finalità per le quali è stato ricevuto. E' vietata 
> qualsiasi forma di riproduzione o divulgazione senza l'esplicito consenso di 
> FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si prega di 
> informare tempestivamente il mittente e distruggere la copia in proprio 
> possesso.
> 
> 
> 
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 

<>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Raymond Nijssen]

Hi Ryan,

I think you could create a python QgsVectorDataProvider for your data 
and setup a QGIS server for hosting a wms.


https://www.itopen.it/qgis-vector-data-provider-python/

But I would probably just go for a simple script that converts the csv 
file into a polygon dataset (gpkg, shp, postgis, ..) and create a wms 
based on that.


Kind regards,
Raymond

On 26-11-2020 19:10, Ryan Peel wrote:
Extending this thought a little.  Is there a way to create a WMS service 
from this so that the WMS reads a csv file, automatically creates the 
polygons using the expression that Toto recommended, so that it (on the 
fly) creates the polygons from adding the WMS to a map so I can share 
with my co-workers so that we are all using the updated data (rather 
than having to share a shp file).


Long question, hoping for maybe an easy solution.

Ryan
VB Fiber

On Thu, Nov 26, 2020 at 12:59 PM Ujaval Gandhi 
mailto:uja...@spatialthoughts.com>> wrote:


Totò - really great solution! Didn't know about Geometry by
Expression and it will come in handy for sure.
Logo    
Ujaval Gandhi
Spatial Thoughts
mobile: +91-8095684687
email: uja...@spatialthoughts.com 
LinkedIn icon  Twitter
icon 




On Thu, Nov 26, 2020 at 8:33 PM Totò Fiandaca
mailto:pigrecoinfin...@gmail.com>> wrote:

 From Processing:

search for Geometry by Expression:
1. as input layer put your file with the coordinates
2. and write this expression:

   make_polygon (
   make_line (
   make_point ("x1", "y1"),
   make_point ("x2", "y2"),
   make_point ("x3", "y3"),
   make_point ("x4", "y4")
   ))

and launch the geoprocess.

I used QGIS 3.16 Hannover

Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel
mailto:ryanp...@gmail.com>> ha scritto:

I have a csv/table that has a single row that contains some
metadata as well as four SEPARATE columns, x1, y1, x2, y2,
x3, y3, x4, y4 of decimal degree coordinates.

I want to import all of this data into QGIS and create a
polygon from the four points as a vector layer.

What is the best way to do this?  I'm not a programmer or
scripter really and fairly new to QGIS.

Thanks!


*Ryan Peel*

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org 
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user



-- 
*Ing. Salvatore Fiandaca*

*mobile*.:+39 327.493.8955
*m*: *pigrecoinfin...@gmail.com *
*C.F*.: FNDSVT71E29Z103G
*P.IVA*: 06597870820
*membro QGIS Italia - http://qgis.it/*
*socio GFOSS.it - *http://gfoss.it/
*blog:** https://pigrecoinfinito.com/

FB: Co-admin -
https://www.facebook.com/qgis.it/**
*
*TW:**https://twitter.com/totofiandaca*

43°51'0.54"N  10°34'27.62"E - EPSG:4326

“Se la conoscenza deve essere aperta a tutti,
perchè mai limitarne l’accesso?”
R. Stallman

Questo documento, allegati inclusi, contiene informazioni di
proprietà di FIANDACA SALVATORE e deve essere utilizzato
esclusivamente dal destinatario in relazione alle finalità per
le quali è stato ricevuto. E' vietata qualsiasi forma di
riproduzione o divulgazione senza l'esplicito consenso di
FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si
prega di informare tempestivamente il mittente e distruggere la
copia in proprio possesso.


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org 
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user





___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Ryan Peel]

Extending this thought a little.  Is there a way to create a WMS service
from this so that the WMS reads a csv file, automatically creates the
polygons using the expression that Toto recommended, so that it (on the
fly) creates the polygons from adding the WMS to a map so I can share with
my co-workers so that we are all using the updated data (rather than having
to share a shp file).

Long question, hoping for maybe an easy solution.

Ryan
VB Fiber

On Thu, Nov 26, 2020 at 12:59 PM Ujaval Gandhi 
wrote:

> Totò - really great solution! Didn't know about Geometry by Expression and
> it will come in handy for sure.
> [image: Logo] 
> Ujaval Gandhi
> Spatial Thoughts
> mobile: +91-8095684687
> email: uja...@spatialthoughts.com
> [image: LinkedIn icon]   [image:
> Twitter icon] 
>
>
>
> On Thu, Nov 26, 2020 at 8:33 PM Totò Fiandaca 
> wrote:
>
>> From Processing:
>>
>> search for Geometry by Expression:
>> 1. as input layer put your file with the coordinates
>> 2. and write this expression:
>>
>>   make_polygon (
>>   make_line (
>>   make_point ("x1", "y1"),
>>   make_point ("x2", "y2"),
>>   make_point ("x3", "y3"),
>>   make_point ("x4", "y4")
>>   ))
>>
>> and launch the geoprocess.
>>
>> I used QGIS 3.16 Hannover
>>
>> Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel 
>> ha scritto:
>>
>>> I have a csv/table that has a single row that contains some metadata as
>>> well as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal
>>> degree coordinates.
>>>
>>> I want to import all of this data into QGIS and create a polygon from
>>> the four points as a vector layer.
>>>
>>> What is the best way to do this?  I'm not a programmer or scripter
>>> really and fairly new to QGIS.
>>>
>>> Thanks!
>>>
>>>
>>> *Ryan Peel*
>>>
>>> ___
>>> Qgis-user mailing list
>>> Qgis-user@lists.osgeo.org
>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>
>>
>> --
>> *Ing. Salvatore Fiandaca*
>> *mobile*.:+39 327.493.8955
>> *m*: *pigrecoinfin...@gmail.com *
>> *C.F*.: FNDSVT71E29Z103G
>> *P.IVA*: 06597870820
>> *membro QGIS Italia - http://qgis.it/ *
>> *socio GFOSS.it - *http://gfoss.it/
>> *blog:*
>> * https://pigrecoinfinito.com/  FB:
>> Co-admin - https://www.facebook.com/qgis.it/
>> **
>>  *
>> *TW:  **https://twitter.com/totofiandaca
>> *
>>
>> 43°51'0.54"N  10°34'27.62"E - EPSG:4326
>>
>> “Se la conoscenza deve essere aperta a tutti,
>> perchè mai limitarne l’accesso?”
>> R. Stallman
>>
>> Questo documento, allegati inclusi, contiene informazioni di proprietà di
>> FIANDACA SALVATORE e deve essere utilizzato esclusivamente dal destinatario
>> in relazione alle finalità per le quali è stato ricevuto. E' vietata
>> qualsiasi forma di riproduzione o divulgazione senza l'esplicito consenso
>> di FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si prega
>> di informare tempestivamente il mittente e distruggere la copia in proprio
>> possesso.
>>
>>
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Ujaval Gandhi]

Totò - really great solution! Didn't know about Geometry by Expression and
it will come in handy for sure.
[image: Logo] 
Ujaval Gandhi
Spatial Thoughts
mobile: +91-8095684687
email: uja...@spatialthoughts.com
[image: LinkedIn icon]   [image:
Twitter icon] 



On Thu, Nov 26, 2020 at 8:33 PM Totò Fiandaca 
wrote:

> From Processing:
>
> search for Geometry by Expression:
> 1. as input layer put your file with the coordinates
> 2. and write this expression:
>
>   make_polygon (
>   make_line (
>   make_point ("x1", "y1"),
>   make_point ("x2", "y2"),
>   make_point ("x3", "y3"),
>   make_point ("x4", "y4")
>   ))
>
> and launch the geoprocess.
>
> I used QGIS 3.16 Hannover
>
> Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel 
> ha scritto:
>
>> I have a csv/table that has a single row that contains some metadata as
>> well as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal
>> degree coordinates.
>>
>> I want to import all of this data into QGIS and create a polygon from the
>> four points as a vector layer.
>>
>> What is the best way to do this?  I'm not a programmer or scripter really
>> and fairly new to QGIS.
>>
>> Thanks!
>>
>>
>> *Ryan Peel*
>>
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
> --
> *Ing. Salvatore Fiandaca*
> *mobile*.:+39 327.493.8955
> *m*: *pigrecoinfin...@gmail.com *
> *C.F*.: FNDSVT71E29Z103G
> *P.IVA*: 06597870820
> *membro QGIS Italia - http://qgis.it/ *
> *socio GFOSS.it - *http://gfoss.it/
> *blog:*
> * https://pigrecoinfinito.com/  FB: Co-admin
> - https://www.facebook.com/qgis.it/ **
>  *
> *TW:  **https://twitter.com/totofiandaca
> *
>
> 43°51'0.54"N  10°34'27.62"E - EPSG:4326
>
> “Se la conoscenza deve essere aperta a tutti,
> perchè mai limitarne l’accesso?”
> R. Stallman
>
> Questo documento, allegati inclusi, contiene informazioni di proprietà di
> FIANDACA SALVATORE e deve essere utilizzato esclusivamente dal destinatario
> in relazione alle finalità per le quali è stato ricevuto. E' vietata
> qualsiasi forma di riproduzione o divulgazione senza l'esplicito consenso
> di FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si prega
> di informare tempestivamente il mittente e distruggere la copia in proprio
> possesso.
>
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[qgis-user]

  
  
Another common solution to this type of problem is to open the .csv
file in a spreadsheet program (eg, Excel) and use string functions
to write a new text field containing a WKT representation of your
desired geometry. Save the edited file back as a .csv file, then
open it in QGIS as a delimited text layer, selecting Well known text
in the Geometry section.

On 11/26/2020 7:48 AM, Ryan Peel wrote:

  
  
I have a csv/table that
  has a single row that contains some metadata as well as four
  SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal
  degree coordinates.


I want to import all of
  this data into QGIS and create a polygon from the four points
  as a vector layer.  


What is the best way to
  do this?  I'm not a programmer or scripter really and fairly
  new to QGIS.  


Thanks!




  

  
Ryan Peel

  

  

  
  
  
  ___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user




  

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Nicolas Cadieux]

Hi,

I’m the field calculator, you could also update the  field using wkt. 
 If this was a line, you would use 
> 
> Geom_from_wkt('LINESTRING (' ||  "x1"  || ' ' ||  "y1"  || ',' ||  "x2"  || ' 
> ' ||  "y2"  || ')')
> 


Google wiki and WKT geometry and you will see how you could make a point, line, 
polygon...  you could also use this same syntax in a csv and import the csv.

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 26 nov. 2020 à 10:03, Totò Fiandaca  a écrit :
> 
> From Processing:
> 
> search for Geometry by Expression:
> 1. as input layer put your file with the coordinates
> 2. and write this expression:
> 
>   make_polygon (
>   make_line (
>   make_point ("x1", "y1"),
>   make_point ("x2", "y2"),
>   make_point ("x3", "y3"),
>   make_point ("x4", "y4")
>   ))
> 
> and launch the geoprocess.
> 
> I used QGIS 3.16 Hannover
> 
> Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel  ha 
> scritto:
>> I have a csv/table that has a single row that contains some metadata as well 
>> as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal degree 
>> coordinates.
>> 
>> I want to import all of this data into QGIS and create a polygon from the 
>> four points as a vector layer.  
>> 
>> What is the best way to do this?  I'm not a programmer or scripter really 
>> and fairly new to QGIS.  
>> 
>> Thanks!
>> 
>> 
>> Ryan Peel
>> 
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 
> 
> -- 
> Ing. Salvatore Fiandaca
> mobile.:+39 327.493.8955 
> m: pigrecoinfin...@gmail.com
> C.F.: FNDSVT71E29Z103G
> P.IVA: 06597870820
> membro QGIS Italia - http://qgis.it/
> socio GFOSS.it - http://gfoss.it/
> blog: https://pigrecoinfinito.com/ 
> FB: Co-admin - https://www.facebook.com/qgis.it/  
> TW: https://twitter.com/totofiandaca
> 
> 43°51'0.54"N  10°34'27.62"E - EPSG:4326
> 
> “Se la conoscenza deve essere aperta a tutti,
> perchè mai limitarne l’accesso?” 
> R. Stallman
> 
> Questo documento, allegati inclusi, contiene informazioni di proprietà di 
> FIANDACA SALVATORE e deve essere utilizzato esclusivamente dal destinatario 
> in relazione alle finalità per le quali è stato ricevuto. E' vietata 
> qualsiasi forma di riproduzione o divulgazione senza l'esplicito consenso di 
> FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si prega di 
> informare tempestivamente il mittente e distruggere la copia in proprio 
> possesso.
> 
> 
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Ryan Peel]

Thank you!  Worked PERFECT!

On Thu, Nov 26, 2020 at 10:02 AM Totò Fiandaca 
wrote:

> From Processing:
>
> search for Geometry by Expression:
> 1. as input layer put your file with the coordinates
> 2. and write this expression:
>
>   make_polygon (
>   make_line (
>   make_point ("x1", "y1"),
>   make_point ("x2", "y2"),
>   make_point ("x3", "y3"),
>   make_point ("x4", "y4")
>   ))
>
> and launch the geoprocess.
>
> I used QGIS 3.16 Hannover
>
> Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel 
> ha scritto:
>
>> I have a csv/table that has a single row that contains some metadata as
>> well as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal
>> degree coordinates.
>>
>> I want to import all of this data into QGIS and create a polygon from the
>> four points as a vector layer.
>>
>> What is the best way to do this?  I'm not a programmer or scripter really
>> and fairly new to QGIS.
>>
>> Thanks!
>>
>>
>> *Ryan Peel*
>>
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
> --
> *Ing. Salvatore Fiandaca*
> *mobile*.:+39 327.493.8955
> *m*: *pigrecoinfin...@gmail.com *
> *C.F*.: FNDSVT71E29Z103G
> *P.IVA*: 06597870820
> *membro QGIS Italia - http://qgis.it/ *
> *socio GFOSS.it - *http://gfoss.it/
> *blog:*
> * https://pigrecoinfinito.com/  FB: Co-admin
> - https://www.facebook.com/qgis.it/ **
>  *
> *TW:  **https://twitter.com/totofiandaca
> *
>
> 43°51'0.54"N  10°34'27.62"E - EPSG:4326
>
> “Se la conoscenza deve essere aperta a tutti,
> perchè mai limitarne l’accesso?”
> R. Stallman
>
> Questo documento, allegati inclusi, contiene informazioni di proprietà di
> FIANDACA SALVATORE e deve essere utilizzato esclusivamente dal destinatario
> in relazione alle finalità per le quali è stato ricevuto. E' vietata
> qualsiasi forma di riproduzione o divulgazione senza l'esplicito consenso
> di FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si prega
> di informare tempestivamente il mittente e distruggere la copia in proprio
> possesso.
>
>
>

-- 
*Ryan Peel*



*President, Vergennes Broadband LLCRural Fiber and Wireless
Broadbandwww.vergennesbroadband.com
**616-897-3107
(o)  616-821-3766 (m)*
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from 4 points

[Totò Fiandaca]

>From Processing:

search for Geometry by Expression:
1. as input layer put your file with the coordinates
2. and write this expression:

  make_polygon (
  make_line (
  make_point ("x1", "y1"),
  make_point ("x2", "y2"),
  make_point ("x3", "y3"),
  make_point ("x4", "y4")
  ))

and launch the geoprocess.

I used QGIS 3.16 Hannover

Il giorno gio 26 nov 2020 alle ore 15:48 Ryan Peel  ha
scritto:

> I have a csv/table that has a single row that contains some metadata as
> well as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal
> degree coordinates.
>
> I want to import all of this data into QGIS and create a polygon from the
> four points as a vector layer.
>
> What is the best way to do this?  I'm not a programmer or scripter really
> and fairly new to QGIS.
>
> Thanks!
>
>
> *Ryan Peel*
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>


-- 
*Ing. Salvatore Fiandaca*
*mobile*.:+39 327.493.8955
*m*: *pigrecoinfin...@gmail.com *
*C.F*.: FNDSVT71E29Z103G
*P.IVA*: 06597870820
*membro QGIS Italia - http://qgis.it/ *
*socio GFOSS.it - *http://gfoss.it/
*blog:*
* https://pigrecoinfinito.com/  FB: Co-admin
- https://www.facebook.com/qgis.it/ **
 *
*TW:  **https://twitter.com/totofiandaca
*

43°51'0.54"N  10°34'27.62"E - EPSG:4326

“Se la conoscenza deve essere aperta a tutti,
perchè mai limitarne l’accesso?”
R. Stallman

Questo documento, allegati inclusi, contiene informazioni di proprietà di
FIANDACA SALVATORE e deve essere utilizzato esclusivamente dal destinatario
in relazione alle finalità per le quali è stato ricevuto. E' vietata
qualsiasi forma di riproduzione o divulgazione senza l'esplicito consenso
di FIANDACA SALVATORE. Qualora fosse stato ricevuto per errore si prega di
informare tempestivamente il mittente e distruggere la copia in proprio
possesso.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon from 4 points

[Ryan Peel]

I have a csv/table that has a single row that contains some metadata as
well as four SEPARATE columns, x1, y1, x2, y2, x3, y3, x4, y4 of decimal
degree coordinates.

I want to import all of this data into QGIS and create a polygon from the
four points as a vector layer.

What is the best way to do this?  I'm not a programmer or scripter really
and fairly new to QGIS.

Thanks!


*Ryan Peel*
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon

[James Bambury]

Hi,

Probably worth noting that drawing Arcmap 'annotation' style
polygons/arrows etc isan option in Q's print layout views but, like in Arc
layout view, symbol locations will be based on page coordinates.

There is no direct equivalent to ArcMaps draw/annotations in the map canvas
view.

James

On Thu, 29 Nov 2018 at 14:01, Michael Harte  wrote:

> Keith,
>
> I know what you mean.  In the Arc software you are able to draw a
> "graphic" point, line or polygon.  You cannot do this in QGIS.  In QGIS the
> geometric feature must be a feature in a spatial data file.
>
> To do this (in 2.x):
>
>1. Open QGIS.
>2. Set the projection/coordinate system for the map window as desired
>(click icon in lower right hand corner to bring up the coordinate system
>dialogue - click "on the fly" at top to activate ability to set coordinate
>system).
>3. Load in any vector or raster data file you want to use for
>referencing the polygon.
>4. In the "add data" toolbar click the "create shapefile" button.
>5. You get two dialogue boxes - in the first set the coordinate system
>for the new shapefile and add any attribute fields you might want in the
>table.
>6. Click OK.
>7. In the second browse to the desired storage directory , name and
>save the new shapefile.
>8. The new, EMPTY shapefile will appear in the table of
>contents/layers list.
>9. Click the name of the new shapefile to make it the active file
>(like old ArcView 3.x).
>10. In the "editing" toolbar click the "pencil" button to toggle
>editing on.
>11. In the "editing" toolbar click the "add feature" button.
>12. Place cursor in map window and left click everywhere you want a
>vertex/corner for your polygon.
>13. Right click to end polygon creation.
>14. In the "editing" toolbar click the "save" button to save the
>polygon.
>15. In the "editing" toolbar click the "pencil" button to toggle
>editing off.
>16. You have a polygon and it will be georeferenced.
>
> Hope this helps.
>
> Cheers, Mike
>
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon

[Michael Harte]

Keith,

I know what you mean.  In the Arc software you are able to draw a 
"graphic" point, line or polygon.  You cannot do this in QGIS.  In QGIS 
the geometric feature must be a feature in a spatial data file.


To do this (in 2.x):

1. Open QGIS.
2. Set the projection/coordinate system for the map window as desired
   (click icon in lower right hand corner to bring up the coordinate
   system dialogue - click "on the fly" at top to activate ability to
   set coordinate system).
3. Load in any vector or raster data file you want to use for
   referencing the polygon.
4. In the "add data" toolbar click the "create shapefile" button.
5. You get two dialogue boxes - in the first set the coordinate system
   for the new shapefile and add any attribute fields you might want in
   the table.
6. Click OK.
7. In the second browse to the desired storage directory , name and
   save the new shapefile.
8. The new, EMPTY shapefile will appear in the table of contents/layers
   list.
9. Click the name of the new shapefile to make it the active file (like
   old ArcView 3.x).
10. In the "editing" toolbar click the "pencil" button to toggle editing on.
11. In the "editing" toolbar click the "add feature" button.
12. Place cursor in map window and left click everywhere you want a
   vertex/corner for your polygon.
13. Right click to end polygon creation.
14. In the "editing" toolbar click the "save" button to save the polygon.
15. In the "editing" toolbar click the "pencil" button to toggle editing
   off.
16. You have a polygon and it will be georeferenced.

Hope this helps.

Cheers, Mike


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon

[Kurt Menke]

Hello Keith
Creating polygons is done by:
1) Having a polygon layer
2) Put that layer into edit mode by right-clicking on it and choosing *Toggle
Editing*
3) Use the *Add polygon feature *tool on the *Digitizing toolbar *to create
the polygon
4) Left click for each vertex and right click to complete.

Kurt


I just want to draw a polygon.  ArcView/ArcGis user for years.  Four hours
in on this.  Everything suggested via search does not work.
-- 
Keith Blair
Red Buffalo LLC
61 S Lakeshore Drive
Ransom Canyon Tx 79366
830-459-0444

**

Kurt Menke, GISP
Bird’s Eye View
3016 Santa Clara Ave SE
Albuquerque, NM 87106

www.BirdsEyeViewGIS.com 
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon

[iqnaulhaq]

Hi, drawing features in QGIS is quite similar with other GIS softwares.
This tutorials should help you 
https://www.qgistutorials.com/en/docs/digitizing_basics.html

Thanks
Muhammad Iqnaul

From: Keith Blair
Sent: Thursday, November 29, 2018 7:36 AM
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] Polygon

I just want to draw a polygon.  ArcView/ArcGis user for years.  Four hours in 
on this.  Everything suggested via search does not work.
-- 
Keith Blair
Red Buffalo LLC
61 S Lakeshore Drive 
Ransom Canyon Tx 79366
830-459-0444

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon

[Nyall Dawson]

On Thu, 29 Nov 2018 at 10:36, Keith Blair  wrote:
>
> I just want to draw a polygon.  ArcView/ArcGis user for years.  Four hours in 
> on this.  Everything suggested via search does not work.

I'm pleased to confirm that you can indeed draw polygons in QGIS --
millions(?) of users have been doing this for decades. Wouldn't be
much of a GIS if you couldn't!

Maybe you could give some more detail so that we can actually help?

Nyall
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon

[Ricardo Pando]

Search in youtube.

Ricardo Pando.


On Wed, Nov 28, 2018 at 7:36 PM Keith Blair 
wrote:

> I just want to draw a polygon.  ArcView/ArcGis user for years.  Four hours
> in on this.  Everything suggested via search does not work.
> --
> Keith Blair
> Red Buffalo LLC
> 61 S Lakeshore Drive
> Ransom Canyon Tx 79366
> 830-459-0444
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon

[Keith Blair]

I just want to draw a polygon.  ArcView/ArcGis user for years.  Four hours
in on this.  Everything suggested via search does not work.
-- 
Keith Blair
Red Buffalo LLC
61 S Lakeshore Drive
Ransom Canyon Tx 79366
830-459-0444
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 08/02/2018 16:46, Michel Stuyts ha scritto:
> Paolo,
> 
> I used your example as a starting point to create a qml style file that adds 
> dimensions to all segments of the border of 

Great stuff, now merged. More feedback welcome, please interested people
dwnload it via Resource Manager and give feeback.
Thanks.

-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Richard McDonnell]

Paolo,
I would have no issue with that at all.
Glad to know my contribution I might be of some help!
Regards,

Richard.


On 09/02/2018 17:00, Paolo Cavallini wrote:

Richard, Mike,
thanks for your contributions.
Would you mind issuing a pull request to add your styles to our repo?
As soon as I'll have some spare time I can check them and possibly add
it to Resource Manager plugin.
All the best.

Il 08/02/2018 16:46, Michel Stuyts ha scritto:

Paolo,

I used your example as a starting point to create a qml style file that adds 
dimensions to all segments of the border of simple polygons, without an extra 
line layer. I used the geometry generator to create some marker lines and 
arrows. I also added the area in the center of the polygons. For some reason 
the labels with the lengths of the segments (that are Font Marker Lines) look 
more bold than the labels that show the areas (that are real labels), even 
though in QGIS 2.99 they have the same size and units. I QGIS 2.18 I tried to 
give them both about the same size in pixel and point units.

I uploaded 2 qml-files (1 for QGIS 2.18 and 1 for QGIS 2.99) and an example 
result png-file to Dropbox: 
https://www.dropbox.com/sh/2d1eaia7miy2v3b/AAB6H5ovouKEMoMmUSwf3pnza?dl=0

How to use the style:
1. open or create a polygon layer
2. add some simple polygons
3. apply the qml-file for your QGIS version (2.18 or 2.99)


Michel

-Oorspronkelijk bericht-
Van: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] Namens Paolo Cavallini
Verzonden: vrijdag 2 februari 2018 18:44
Aan: qgis-user@lists.osgeo.org
Onderwerp: Re: [Qgis-user] Polygon Dimensioning in QGIS

Il 02/02/2018 17:35, Fernando M. Roxo da Motta ha scritto:


   This is really amazing!

...

   I think that if the label were attached in someway to the
dimensioning line, this could be an useful feature.

thanks for this note. As said, it was just a quick exercise, there is much room 
for improvements.
Feel free to submit pull requests to:
https://github.com/pcav/qgis_styles
All the best.

--
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user





--
*_Richard McDonnell_*
*GIS Specialist PgD GIS AssocSCSI*
*OPW FRM Data Management*
*52 Stephens Green, Dublin 2.*
TEL: 01 6476543

OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
OPW - Looking to the future - Caring for the past

***
Email Disclaimer: http://www.opw.ie/en/disclaimer/

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Richard, Mike,
thanks for your contributions.
Would you mind issuing a pull request to add your styles to our repo?
As soon as I'll have some spare time I can check them and possibly add
it to Resource Manager plugin.
All the best.

Il 08/02/2018 16:46, Michel Stuyts ha scritto:
> Paolo,
> 
> I used your example as a starting point to create a qml style file that adds 
> dimensions to all segments of the border of simple polygons, without an extra 
> line layer. I used the geometry generator to create some marker lines and 
> arrows. I also added the area in the center of the polygons. For some reason 
> the labels with the lengths of the segments (that are Font Marker Lines) look 
> more bold than the labels that show the areas (that are real labels), even 
> though in QGIS 2.99 they have the same size and units. I QGIS 2.18 I tried to 
> give them both about the same size in pixel and point units.
> 
> I uploaded 2 qml-files (1 for QGIS 2.18 and 1 for QGIS 2.99) and an example 
> result png-file to Dropbox: 
> https://www.dropbox.com/sh/2d1eaia7miy2v3b/AAB6H5ovouKEMoMmUSwf3pnza?dl=0
> 
> How to use the style:
> 1. open or create a polygon layer
> 2. add some simple polygons
> 3. apply the qml-file for your QGIS version (2.18 or 2.99)
> 
> 
> Michel
> 
> -Oorspronkelijk bericht-
> Van: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] Namens Paolo 
> Cavallini
> Verzonden: vrijdag 2 februari 2018 18:44
> Aan: qgis-user@lists.osgeo.org
> Onderwerp: Re: [Qgis-user] Polygon Dimensioning in QGIS
> 
> Il 02/02/2018 17:35, Fernando M. Roxo da Motta ha scritto:
> 
>>   This is really amazing!
> ...
>>   I think that if the label were attached in someway to the 
>> dimensioning line, this could be an useful feature.
> 
> thanks for this note. As said, it was just a quick exercise, there is much 
> room for improvements.
> Feel free to submit pull requests to:
> https://github.com/pcav/qgis_styles
> All the best.
> 
> --
> Paolo Cavallini - www.faunalia.eu
> QGIS & PostGIS courses: http://www.faunalia.eu/training.html
> https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 


-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Michel Stuyts]

Paolo,

I used your example as a starting point to create a qml style file that adds 
dimensions to all segments of the border of simple polygons, without an extra 
line layer. I used the geometry generator to create some marker lines and 
arrows. I also added the area in the center of the polygons. For some reason 
the labels with the lengths of the segments (that are Font Marker Lines) look 
more bold than the labels that show the areas (that are real labels), even 
though in QGIS 2.99 they have the same size and units. I QGIS 2.18 I tried to 
give them both about the same size in pixel and point units.

I uploaded 2 qml-files (1 for QGIS 2.18 and 1 for QGIS 2.99) and an example 
result png-file to Dropbox: 
https://www.dropbox.com/sh/2d1eaia7miy2v3b/AAB6H5ovouKEMoMmUSwf3pnza?dl=0

How to use the style:
1. open or create a polygon layer
2. add some simple polygons
3. apply the qml-file for your QGIS version (2.18 or 2.99)


Michel

-Oorspronkelijk bericht-
Van: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] Namens Paolo Cavallini
Verzonden: vrijdag 2 februari 2018 18:44
Aan: qgis-user@lists.osgeo.org
Onderwerp: Re: [Qgis-user] Polygon Dimensioning in QGIS

Il 02/02/2018 17:35, Fernando M. Roxo da Motta ha scritto:

>   This is really amazing!
...
>   I think that if the label were attached in someway to the 
> dimensioning line, this could be an useful feature.

thanks for this note. As said, it was just a quick exercise, there is much room 
for improvements.
Feel free to submit pull requests to:
https://github.com/pcav/qgis_styles
All the best.

--
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 02/02/2018 17:35, Fernando M. Roxo da Motta ha scritto:

>   This is really amazing!
...
>   I think that if the label were attached in someway to the
> dimensioning line, this could be an useful feature.

thanks for this note. As said, it was just a quick exercise, there is
much room for improvements.
Feel free to submit pull requests to:
https://github.com/pcav/qgis_styles
All the best.

-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Fernando M. Roxo da Motta]

On Fri, 2 Feb 2018 09:25:04 +, Paolo Cavallini
 wrote:


> Il 01/02/2018 20:16, DelazJ ha scritto:
> > Nice,Paolo! Really! Another example of QGIS great capabilities and
> > users imagination...
> > This deserves either a blog post or being published in the "Resource
> > Sharing" plugin!  
> 
> BTW, it is already loaded there
> https://github.com/pcav/qgis_styles/blob/master/collections/distance_measure/preview/measure_preview.png


  This is really amazing!

  I noticed a feature of this that I haven't seem mentioned, but I
think it can be of use.   It seems that the displacement of the
dimensioning line is dependent on the order of the point picks,
although the label seems to have its own way. In the attached image I
picked the upper line clicking on the left point and then finishing on
right point.The lower line I have picked first the right point and
finished with the left point.

  I think that if the label were attached in someway to the
dimensioning line, this could be an useful feature.

  HTH

  Roxo

-- 
 Non luctari, ludare ---+ WYSIWYG
Fernando M. Roxo da Motta   | Editor?
Except where explicitly stated I speak on my own behalf.|  VI !!
  ( Usuário Linux registrado #39505 )   | I see text,
 Quis custodiet ipsos custodes?-+ I get text!
 
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Thanks, we'll add this.
All the best.

Il 2 febbraio 2018 15:48:47 WET, Richard McDonnell  
ha scritto:
>Hi,
>Very nice use of QGIS's extensive styling, If I may add my two cents, 
>see attached style tweak, which uses the move Label tool to fine tune 
>positioning of your Dimensions.
>To work, it requires you to create your Dimension Layer with two 
>attributes *dim_x* and *dim_y*, create the line as before, but use the 
>move text tool to locate the text where you want. The dimension Line 
>will followthough depending on what direction you draw the
>dimension 
>line.
>Regards,
>
>Richard.
>
>
>
>On 02/02/2018 12:28, Paolo Cavallini wrote:
>> Il 02/02/2018 10:41, Richard Duivenvoorde ha scritto:
>>> On 01-02-18 21:16, DelazJ wrote:
 This deserves either a blog post or being published in the
>"Resource
 Sharing" plugin!
>>> Yes, hear hear. This looks great! Nice idea (Juergen?)!!
>>>
>>> Please Paolo, show it off, blog about it on blog.qgis.org :-)
>> I'm so pleased by this enthusiastic feedback, thanks.
>> We'll try to write something.
>> All the best.
>>
>
>-- 
>*_Richard McDonnell_*
>*GIS Specialist PgD GIS AssocSCSI*
>*OPW FRM Data Management*
>*52 Stephens Green, Dublin 2.*
>TEL: 01 6476543
>
>OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
>OPW - Looking to the future - Caring for the past
>
>***
>Email Disclaimer: http://www.opw.ie/en/disclaimer/

-- 
Sorry for being short___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Richard McDonnell]

Hi,
Very nice use of QGIS's extensive styling, If I may add my two cents, 
see attached style tweak, which uses the move Label tool to fine tune 
positioning of your Dimensions.
To work, it requires you to create your Dimension Layer with two 
attributes *dim_x* and *dim_y*, create the line as before, but use the 
move text tool to locate the text where you want. The dimension Line 
will followthough depending on what direction you draw the dimension 
line.

Regards,

Richard.



On 02/02/2018 12:28, Paolo Cavallini wrote:

Il 02/02/2018 10:41, Richard Duivenvoorde ha scritto:

On 01-02-18 21:16, DelazJ wrote:

This deserves either a blog post or being published in the "Resource
Sharing" plugin!

Yes, hear hear. This looks great! Nice idea (Juergen?)!!

Please Paolo, show it off, blog about it on blog.qgis.org :-)

I'm so pleased by this enthusiastic feedback, thanks.
We'll try to write something.
All the best.



--
*_Richard McDonnell_*
*GIS Specialist PgD GIS AssocSCSI*
*OPW FRM Data Management*
*52 Stephens Green, Dublin 2.*
TEL: 01 6476543

OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
OPW - Looking to the future - Caring for the past

***
Email Disclaimer: http://www.opw.ie/en/disclaimer/



  

  


  

  
  

  

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  


  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  


  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  


  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  


  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  

  



  
  
  















































































































































  
  0
  0
  0
  dims
  0
  


















  
  

  


  


















  

  
  
  
  


  
  
  
  
  

  
  
  

  
  
  
  0
  
  
  0
  generatedlayout
  
  


  
  


  
  COALESCE( "dims", '' )
  1

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 02/02/2018 10:41, Richard Duivenvoorde ha scritto:
> On 01-02-18 21:16, DelazJ wrote:
>> This deserves either a blog post or being published in the "Resource
>> Sharing" plugin!
> 
> Yes, hear hear. This looks great! Nice idea (Juergen?)!!
> 
> Please Paolo, show it off, blog about it on blog.qgis.org :-)

I'm so pleased by this enthusiastic feedback, thanks.
We'll try to write something.
All the best.

-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Richard Duivenvoorde]

On 01-02-18 21:16, DelazJ wrote:
> This deserves either a blog post or being published in the "Resource
> Sharing" plugin!

Yes, hear hear. This looks great! Nice idea (Juergen?)!!

Please Paolo, show it off, blog about it on blog.qgis.org :-)

Regards,

Richard Duivenvoorde
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 01/02/2018 20:16, DelazJ ha scritto:
> Nice,Paolo! Really! Another example of QGIS great capabilities and users
> imagination...
> This deserves either a blog post or being published in the "Resource
> Sharing" plugin!

BTW, it is already loaded there
https://github.com/pcav/qgis_styles/blob/master/collections/distance_measure/preview/measure_preview.png
-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS [Marketing Mail]

[Elstermann, Mike]

Perfect! THX!
mikeE, #geoObserver

> Am 01.02.2018 um 21:16 schrieb DelazJ :
> 
> Nice,Paolo! Really! Another example of QGIS great capabilities and users 
> imagination...
> This deserves either a blog post or being published in the "Resource Sharing" 
> plugin!
> 
> Harrissou
> 
> 
> 2018-02-01 20:30 GMT+01:00 Bernd Vogelgesang :
> Hey Paolo,
> 
> this is "phantastic"!
> 
> People will rub their eyes when I will show this.
> 
> Cheers,
> Bernd
> 
> Am 01.02.2018, 17:49 Uhr, schrieb Paolo Cavallini :
> 
> Il 01/02/2018 09:49, Bernd Vogelgesang ha scritto:
> Oh Paolo, please find the time to find that example ;)
> I think there is quite some need for such a function, especially in the
> moving-from-CAD-to-QGIS-community.
> 
> A rough project showing our approach:
> http://www.faunalia.eu/~paolo/dimensioning.zip
> Thanks Juergen for the idea.
> All the best.
> 
> 
> -- 
> Bernd Vogelgesang
> Siedlerstraße 2
> 91083 Baiersdorf/Igelsdorf
> Tel: 09133-825374
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Thanks to all, glad you like it.
All the best.

Il 01/02/2018 20:16, DelazJ ha scritto:
> Nice,Paolo! Really! Another example of QGIS great capabilities and users
> imagination...
> This deserves either a blog post or being published in the "Resource
> Sharing" plugin!
> 
> Harrissou
> 
> 
> 2018-02-01 20:30 GMT+01:00 Bernd Vogelgesang  >:
> 
> Hey Paolo,
> 
> this is "phantastic"!
> 
> People will rub their eyes when I will show this.
> 
> Cheers,
> Bernd
> 
> Am 01.02.2018, 17:49 Uhr, schrieb Paolo Cavallini
> >:
> 
> Il 01/02/2018 09:49, Bernd Vogelgesang ha scritto:
> 
> Oh Paolo, please find the time to find that example ;)
> I think there is quite some need for such a function,
> especially in the
> moving-from-CAD-to-QGIS-community.
> 
> 
> A rough project showing our approach:
> http://www.faunalia.eu/~paolo/dimensioning.zip
> 
> Thanks Juergen for the idea.
> All the best.
> 
> 
> 
> -- 
> Bernd Vogelgesang
> Siedlerstraße 2
> 91083 Baiersdorf/Igelsdorf
> Tel: 09133-825374
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org 
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 
> 
> 
> 
> 
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 


-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[DelazJ]

Nice,Paolo! Really! Another example of QGIS great capabilities and users
imagination...
This deserves either a blog post or being published in the "Resource
Sharing" plugin!

Harrissou


2018-02-01 20:30 GMT+01:00 Bernd Vogelgesang :

> Hey Paolo,
>
> this is "phantastic"!
>
> People will rub their eyes when I will show this.
>
> Cheers,
> Bernd
>
> Am 01.02.2018, 17:49 Uhr, schrieb Paolo Cavallini :
>
> Il 01/02/2018 09:49, Bernd Vogelgesang ha scritto:
>>
>>> Oh Paolo, please find the time to find that example ;)
>>> I think there is quite some need for such a function, especially in the
>>> moving-from-CAD-to-QGIS-community.
>>>
>>
>> A rough project showing our approach:
>> http://www.faunalia.eu/~paolo/dimensioning.zip
>> Thanks Juergen for the idea.
>> All the best.
>>
>
>
> --
> Bernd Vogelgesang
> Siedlerstraße 2
> 91083 Baiersdorf/Igelsdorf
> Tel: 09133-825374
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Bernd Vogelgesang]

Hey Paolo,

this is "phantastic"!

People will rub their eyes when I will show this.

Cheers,
Bernd

Am 01.02.2018, 17:49 Uhr, schrieb Paolo Cavallini :


Il 01/02/2018 09:49, Bernd Vogelgesang ha scritto:

Oh Paolo, please find the time to find that example ;)
I think there is quite some need for such a function, especially in the
moving-from-CAD-to-QGIS-community.


A rough project showing our approach:
http://www.faunalia.eu/~paolo/dimensioning.zip
Thanks Juergen for the idea.
All the best.



--
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Kirk Schmidt]

That works very well Thanks Paulo


On 2/1/2018 12:23 PM, Paolo Cavallini wrote:

Il 01/02/2018 15:28, Kirk Schmidt ha scritto:

One way to work around the issue is to generate a new line layer

it's much simpler, only styling.
if nobody comes up with the solution, bear with me, I'll package a
sample project.
All the best.



--
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
RR # 1
Thorburn, NS
B0K 1W0
Tel (902) 922.3607
Email: k...@nortekresources.com
Web: www.nortekreources.com

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 01/02/2018 09:49, Bernd Vogelgesang ha scritto:
> Oh Paolo, please find the time to find that example ;)
> I think there is quite some need for such a function, especially in the
> moving-from-CAD-to-QGIS-community.

A rough project showing our approach:
http://www.faunalia.eu/~paolo/dimensioning.zip
Thanks Juergen for the idea.
All the best.
-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 01/02/2018 15:28, Kirk Schmidt ha scritto:
> One way to work around the issue is to generate a new line layer

it's much simpler, only styling.
if nobody comes up with the solution, bear with me, I'll package a
sample project.
All the best.

-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Kirk Schmidt]

One way to work around the issue is to generate a new line layer 
digitized at the position that you want the finished dimension to show 
up on your graphic or map.  Add a length attribute to the completed 
linse and calculate the length in trhe units of your choice.  This is 
not ideal for a large number of polygons but does work.



On 2/1/2018 5:49 AM, Bernd Vogelgesang wrote:

Oh Paolo, please find the time to find that example ;)
I think there is quite some need for such a function, especially in 
the moving-from-CAD-to-QGIS-community.


Cheers
Bernd


Am 01.02.2018, 10:44 Uhr, schrieb Paolo Cavallini :

I am sure, we have done it.
I can dig out an example when I find the time.
All the best.

Il 1 febbraio 2018 09:40:39 WET, Andreas Neumann
 ha scritto:

I am not so sure if it can be easily done with styling. Perhaps with
geometry generators and labels. But it is definitely not so trivial.

In QGIS 2.x there was a dimensioning plugin:
https://github.com/kalxas/dimensioning

I haven't tried this myself, not sure if and how it works.

Andreas


On 01.02.2018 10:35, Paolo Cavallini wrote:

Il 01/02/2018 09:11, ha...@gbd-consult.de ha scritto:

Dear QGIS-User community, I am looking for
an opportunity in order to create a polygon
dimensioning in QGIS. Do you have any suggestions how
I can do this? -- The result should look like the
picture below. The best case scenario should show the
dimensioning in meter as the unit. I tried the plugin
QAD but it seems like I can not do it within the
plugin. Any assistance is welcome! 


this can be easily done with styling. I agree it could be
more automatic, but it is doable right now. All the best. 





Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info:https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-user


-- 
Sorry for being short





--
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user


--
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
RR # 1
Thorburn, NS
B0K 1W0
Tel (902) 922.3607
Email: k...@nortekresources.com
Web: www.nortekreources.com

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Bernd Vogelgesang]

Oh Paolo, please find the time to find that example ;)
I think there is quite some need for such a function, especially in the  
moving-from-CAD-to-QGIS-community.


Cheers
Bernd


Am 01.02.2018, 10:44 Uhr, schrieb Paolo Cavallini :


I am sure, we have done it.
I can dig out an example when I find the time.
All the best.

Il 1 febbraio 2018 09:40:39 WET, Andreas Neumann   
ha scritto:
I am not so sure if it can be easily done with styling. Perhaps with 
geometry generators and labels. But it is definitely not so trivial.


In QGIS 2.x there was a dimensioning plugin: 
https://github.com/kalxas/dimensioning


I haven't tried this myself, not sure if and how it works.

Andreas


On 01.02.2018 10:35, Paolo Cavallini wrote:

Il 01/02/2018 09:11, ha...@gbd-consult.de ha scritto:

Dear QGIS-User community,

I am looking for an opportunity in order to create a polygon
dimensioning in QGIS.
Do you have any suggestions how I can do this? -- The result should  
look

like the picture below.
The best case scenario should show the dimensioning in meter as the
unit. I tried the plugin QAD but it seems like I can not do it within
the plugin.
 Any assistance is welcome!

this can be easily done with styling.
I agree it could be more automatic, but it is doable right now.
All the best.



Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user


--Sorry for being short




--
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

I am sure, we have done it.
I can dig out an example when I find the time.
All the best.

Il 1 febbraio 2018 09:40:39 WET, Andreas Neumann  ha 
scritto:
>I am not so sure if it can be easily done with styling. Perhaps with 
>geometry generators and labels. But it is definitely not so trivial.
>
>In QGIS 2.x there was a dimensioning plugin: 
>https://github.com/kalxas/dimensioning
>
>I haven't tried this myself, not sure if and how it works.
>
>Andreas
>
>
>On 01.02.2018 10:35, Paolo Cavallini wrote:
>> Il 01/02/2018 09:11, ha...@gbd-consult.de ha scritto:
>>> Dear QGIS-User community,
>>>
>>> I am looking for an opportunity in order to create a polygon
>>> dimensioning in QGIS.
>>> Do you have any suggestions how I can do this? -- The result should
>look
>>> like the picture below.
>>> The best case scenario should show the dimensioning in meter as the
>>> unit. I tried the plugin QAD but it seems like I can not do it
>within
>>> the plugin.
>>>   
>>> Any assistance is welcome!
>> this can be easily done with styling.
>> I agree it could be more automatic, but it is doable right now.
>> All the best.
>
>___
>Qgis-user mailing list
>Qgis-user@lists.osgeo.org
>List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

-- 
Sorry for being short___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Andreas Neumann]

I am not so sure if it can be easily done with styling. Perhaps with 
geometry generators and labels. But it is definitely not so trivial.


In QGIS 2.x there was a dimensioning plugin: 
https://github.com/kalxas/dimensioning


I haven't tried this myself, not sure if and how it works.

Andreas


On 01.02.2018 10:35, Paolo Cavallini wrote:

Il 01/02/2018 09:11, ha...@gbd-consult.de ha scritto:

Dear QGIS-User community,

I am looking for an opportunity in order to create a polygon
dimensioning in QGIS.
Do you have any suggestions how I can do this? -- The result should look
like the picture below.
The best case scenario should show the dimensioning in meter as the
unit. I tried the plugin QAD but it seems like I can not do it within
the plugin.
  
Any assistance is welcome!

this can be easily done with styling.
I agree it could be more automatic, but it is doable right now.
All the best.


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon Dimensioning in QGIS

[Paolo Cavallini]

Il 01/02/2018 09:11, ha...@gbd-consult.de ha scritto:
> Dear QGIS-User community,
> 
> I am looking for an opportunity in order to create a polygon
> dimensioning in QGIS.
> Do you have any suggestions how I can do this? -- The result should look
> like the picture below.
> The best case scenario should show the dimensioning in meter as the
> unit. I tried the plugin QAD but it seems like I can not do it within
> the plugin.
>  
> Any assistance is welcome!

this can be easily done with styling.
I agree it could be more automatic, but it is doable right now.
All the best.
-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html
https://www.google.com/trends/explore?date=all=IT=qgis,arcgis
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon Dimensioning in QGIS

[haufe]

Dear QGIS-User community,

 I am looking for an opportunity in order to create a polygon
dimensioning in QGIS.
 Do you have any suggestions how I can do this? -- The result should
look like the picture below. 
The best case scenario should show the dimensioning in meter as the
unit. I tried the plugin QAD but it seems like I can not do it within
the plugin. 

Any assistance is welcome!

 Best regards,
 Simon Haufe___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon merge/divide problem

[Sarah Gregg]

Just to let you all know, I spent most of yesterday trying to sort out the
shapefile following the various suggestions sent to me by mail, but nothing
doing. In the end I have decided that the only way ahead is to
redigitalise. Thanks to all of you, Sarah.

2016-05-05 8:46 GMT+02:00 Sarah Gregg <lynkosm...@gmail.com>:

> Thanks to those of you who have written to me in private asking for a copy
> of the shape. Sorry, I should have thought of it before. You can download
> it here: http://www.lynkos.net/boxfile/Shape-zoning.zip .
> The polygon which is behaving badly is ID 7 with zone code ERR. Most
> importantly I'm trying to merge it with the adjacent polygon 44, but in the
> future, I also need to be able to divide it in various points and merge it
> with other polygons which I will be adding. Many thanks in advance, Sarah.
>
> 2016-05-05 8:09 GMT+02:00 Sheikh Salman Ahmad <salma...@msn.com>:
>
>> Hello
>>
>> Kindly send me the shape file. after using it i will be able to tell
>> wether i will be able to be any hello or not.
>>
>> Regards
>>
>> Sheikh Salman Ahmad
>>
>> --
>> From: lynkosm...@gmail.com
>> Date: Wed, 4 May 2016 21:33:27 +0200
>> To: Qgis-user@lists.osgeo.org
>> Subject: [Qgis-user] Polygon merge/divide problem
>>
>>
>> Hello everyone. I'm having problems digitalising a map of zones in a
>> nature reserve. I have one very large complex polygon which I can't either
>> divide or merge with other polygons. I have run a validity test and
>> corrected the couple of errors it found, but still no luck.
>> When I try and divide it, I'm told it still has errors and I need to
>> repair it first. When I try to merge it, whatever polygon I try and merge
>> with it is simply deleted!
>> Anyone any ideas of what I could try? I'm on Windows 8.1 and I've tried
>> both QGIS 2.8.1 and 2.14.1.
>> Many thanks, Sarah.
>>
>> *Sarah Gregg*
>> immagini - parole - territorio - natura
>> Web: www.lynkos.net <http://ww.lynkos.net/>
>>
>>
>>
>> ___ Qgis-user mailing list
>> Qgis-user@lists.osgeo.org List info:
>> http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon merge/divide problem

[Sarah Gregg]

Thanks to those of you who have written to me in private asking for a copy
of the shape. Sorry, I should have thought of it before. You can download
it here: http://www.lynkos.net/boxfile/Shape-zoning.zip .
The polygon which is behaving badly is ID 7 with zone code ERR. Most
importantly I'm trying to merge it with the adjacent polygon 44, but in the
future, I also need to be able to divide it in various points and merge it
with other polygons which I will be adding. Many thanks in advance, Sarah.

2016-05-05 8:09 GMT+02:00 Sheikh Salman Ahmad <salma...@msn.com>:

> Hello
>
> Kindly send me the shape file. after using it i will be able to tell
> wether i will be able to be any hello or not.
>
> Regards
>
> Sheikh Salman Ahmad
>
> --
> From: lynkosm...@gmail.com
> Date: Wed, 4 May 2016 21:33:27 +0200
> To: Qgis-user@lists.osgeo.org
> Subject: [Qgis-user] Polygon merge/divide problem
>
>
> Hello everyone. I'm having problems digitalising a map of zones in a
> nature reserve. I have one very large complex polygon which I can't either
> divide or merge with other polygons. I have run a validity test and
> corrected the couple of errors it found, but still no luck.
> When I try and divide it, I'm told it still has errors and I need to
> repair it first. When I try to merge it, whatever polygon I try and merge
> with it is simply deleted!
> Anyone any ideas of what I could try? I'm on Windows 8.1 and I've tried
> both QGIS 2.8.1 and 2.14.1.
> Many thanks, Sarah.
>
> *Sarah Gregg*
> immagini - parole - territorio - natura
> Web: www.lynkos.net <http://ww.lynkos.net/>
>
>
>
> ___ Qgis-user mailing list
> Qgis-user@lists.osgeo.org List info:
> http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon merge/divide problem

[Sheikh Salman Ahmad]

Hello
Kindly send me the shape file. after using it i will be able to tell wether i 
will be able to be any hello or not.
Regards
Sheikh Salman Ahmad

From: lynkosm...@gmail.com
Date: Wed, 4 May 2016 21:33:27 +0200
To: Qgis-user@lists.osgeo.org
Subject: [Qgis-user] Polygon merge/divide problem

Hello everyone. I'm having problems digitalising a map of zones in a nature 
reserve. I have one very large complex polygon which I can't either divide or 
merge with other polygons. I have run a validity test and corrected the couple 
of errors it found, but still no luck. When I try and divide it, I'm told it 
still has errors and I need to repair it first. When I try to merge it, 
whatever polygon I try and merge with it is simply deleted!Anyone any ideas of 
what I could try? I'm on Windows 8.1 and I've tried both QGIS 2.8.1 and 
2.14.1.Many thanks, Sarah. 
Sarah Greggimmagini - parole - territorio - natura Web: www.lynkos.net 



___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user  
  ___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon merge/divide problem

[Sarah Gregg]

Hello everyone. I'm having problems digitalising a map of zones in a nature
reserve. I have one very large complex polygon which I can't either divide
or merge with other polygons. I have run a validity test and corrected the
couple of errors it found, but still no luck.
When I try and divide it, I'm told it still has errors and I need to repair
it first. When I try to merge it, whatever polygon I try and merge with it
is simply deleted!
Anyone any ideas of what I could try? I'm on Windows 8.1 and I've tried
both QGIS 2.8.1 and 2.14.1.
Many thanks, Sarah.

*Sarah Gregg*
immagini - parole - territorio - natura
Web: www.lynkos.net 
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon centroids

[Alexandre Neto]

Hello Leo,

That's quite straightforward actually. In the field calculator (or in any
other instance of expression builder) there are 2 geometry functions to
achieve what you need,  $x and $y.

You can either put them in separate fields or create a string to populate a
single one. Something like this,

$x || ' , ' || $y

Would produce something like this:

'1234.56 , 9876.43'

Notice that the double pipe character || works as a string concatenator.
And that the result is a string therefore not useful for any arithmetic
operations after.

Hope this helped.

Best regards,

Alexandre Neto
Em 27/08/2014 22:37, Leo Kris Palao lk.pa...@gmail.com escreveu:

 Hi QGIS users,

 I don't know if this question has been asked before.

 Can you help me create a syntax in field calculator to add in the
 attribute table the centroids coordinates for each or selected polygon
 features?

 I am using Qgis 2.2 Valmiera version in Windows.

 Thanks in advance for help,
 -Leo

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon centroids

[Alexandre Neto]

Hello Leo,

That's quite straightforward actually. In the field calculator (or in any
other instance of expression builder) there are 2 geometry functions to
achieve what you need,  $x and $y.

You can either put them in separate fields or create a string to populate a
single one. Something like this,

$x || ' , ' || $y

Would produce something like this:

'1234.56 , 9876.43'

Notice that the double pipe character || works as a string concatenator.
And that the result is a string therefore not useful for any arithmetic
operations after.

Hope this helped.

Best regards,

Alexandre Neto
Em 27/08/2014 22:37, Leo Kris Palao lk.pa...@gmail.com escreveu:

 Hi QGIS users,

 I don't know if this question has been asked before.

 Can you help me create a syntax in field calculator to add in the
 attribute table the centroids coordinates for each or selected polygon
 features?

 I am using Qgis 2.2 Valmiera version in Windows.

 Thanks in advance for help,
 -Leo

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon centroids

[Leo Kris Palao]

Hi Alexander,

Thanks for your reply. In my understanding, this only applies if I have
point coordinates, right? If I have polygons I think I need another syntax?

I can create centroids in Vector  Geometry  Polygon Centroids tool then
apply $x and $y to extract lat lon coordinates, but in some cases I want to
skip this process if I am dealing with more than 300 thousand features in
my polygon layer.

Thanks,
-Leo


On Thu, Aug 28, 2014 at 3:01 PM, Alexandre Neto senhor.n...@gmail.com
wrote:

 Hello Leo,

 That's quite straightforward actually. In the field calculator (or in any
 other instance of expression builder) there are 2 geometry functions to
 achieve what you need,  $x and $y.

 You can either put them in separate fields or create a string to populate
 a single one. Something like this,

 $x || ' , ' || $y

 Would produce something like this:

 '1234.56 , 9876.43'

 Notice that the double pipe character || works as a string concatenator.
 And that the result is a string therefore not useful for any arithmetic
 operations after.

 Hope this helped.

 Best regards,

 Alexandre Neto
 Em 27/08/2014 22:37, Leo Kris Palao lk.pa...@gmail.com escreveu:

 Hi QGIS users,

 I don't know if this question has been asked before.

 Can you help me create a syntax in field calculator to add in the
 attribute table the centroids coordinates for each or selected polygon
 features?

 I am using Qgis 2.2 Valmiera version in Windows.

 Thanks in advance for help,
 -Leo

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon centroids

[Alexandre Neto]

Ups, my bad...

You can get your features centroid using the function centroid(). It will
return a point geometry, then you can get the x and y by using either x_min
or x_max and y_min or y_max. Like this:

  xmin( centroid( $geometry )) || ' , ' || ymin( centroid( $geometry ))

Alexandre Neto


On Thu, Aug 28, 2014 at 10:29 AM, Leo Kris Palao lk.pa...@gmail.com wrote:

 Hi Alexander,

 Thanks for your reply. In my understanding, this only applies if I have
 point coordinates, right? If I have polygons I think I need another syntax?

 I can create centroids in Vector  Geometry  Polygon Centroids tool then
 apply $x and $y to extract lat lon coordinates, but in some cases I want to
 skip this process if I am dealing with more than 300 thousand features in
 my polygon layer.

 Thanks,
 -Leo


 On Thu, Aug 28, 2014 at 3:01 PM, Alexandre Neto senhor.n...@gmail.com
 wrote:

 Hello Leo,

 That's quite straightforward actually. In the field calculator (or in any
 other instance of expression builder) there are 2 geometry functions to
 achieve what you need,  $x and $y.

 You can either put them in separate fields or create a string to populate
 a single one. Something like this,

 $x || ' , ' || $y

 Would produce something like this:

 '1234.56 , 9876.43'

 Notice that the double pipe character || works as a string concatenator.
 And that the result is a string therefore not useful for any arithmetic
 operations after.

 Hope this helped.

 Best regards,

 Alexandre Neto
 Em 27/08/2014 22:37, Leo Kris Palao lk.pa...@gmail.com escreveu:

 Hi QGIS users,

 I don't know if this question has been asked before.

 Can you help me create a syntax in field calculator to add in the
 attribute table the centroids coordinates for each or selected polygon
 features?

 I am using Qgis 2.2 Valmiera version in Windows.

 Thanks in advance for help,
 -Leo

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon centroids

[Siki Zoltan]

AFAIK xmin, ymin is not available in QGIS 2.2, you must upgrade to 2.4.

Zoltan

On Thu, 28 Aug 2014, Alexandre Neto wrote:


Ups, my bad...

You can get your features centroid using the function centroid(). It will
return a point geometry, then you can get the x and y by using either x_min
or x_max and y_min or y_max. Like this:

 xmin( centroid( $geometry )) || ' , ' || ymin( centroid( $geometry ))

Alexandre Neto


On Thu, Aug 28, 2014 at 10:29 AM, Leo Kris Palao lk.pa...@gmail.com wrote:


Hi Alexander,

Thanks for your reply. In my understanding, this only applies if I have
point coordinates, right? If I have polygons I think I need another syntax?

I can create centroids in Vector  Geometry  Polygon Centroids tool then
apply $x and $y to extract lat lon coordinates, but in some cases I want to
skip this process if I am dealing with more than 300 thousand features in
my polygon layer.

Thanks,
-Leo


On Thu, Aug 28, 2014 at 3:01 PM, Alexandre Neto senhor.n...@gmail.com
wrote:


Hello Leo,

That's quite straightforward actually. In the field calculator (or in any
other instance of expression builder) there are 2 geometry functions to
achieve what you need,  $x and $y.

You can either put them in separate fields or create a string to populate
a single one. Something like this,

$x || ' , ' || $y

Would produce something like this:

'1234.56 , 9876.43'

Notice that the double pipe character || works as a string concatenator.
And that the result is a string therefore not useful for any arithmetic
operations after.

Hope this helped.

Best regards,

Alexandre Neto
Em 27/08/2014 22:37, Leo Kris Palao lk.pa...@gmail.com escreveu:


Hi QGIS users,

I don't know if this question has been asked before.

Can you help me create a syntax in field calculator to add in the
attribute table the centroids coordinates for each or selected polygon
features?

I am using Qgis 2.2 Valmiera version in Windows.

Thanks in advance for help,
-Leo

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user








___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon centroids

[Leo Kris Palao]

Hi QGIS users,

I don't know if this question has been asked before.

Can you help me create a syntax in field calculator to add in the attribute
table the centroids coordinates for each or selected polygon features?

I am using Qgis 2.2 Valmiera version in Windows.

Thanks in advance for help,
-Leo
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon shapefile not visible if overlapping another shapefile

[Lene Fischer]

Hi Christine,
There are several possibillities:
But if your settings are set to Avoid intersection, you polygon will be 
clipped against existing polygons. If you digitize entire over a polygon - it 
will be clipped away entirely.
So please check in: SettingSnapping and remove Avoid intersection.

Regards


Lene Fischer
Associate Professor

Department of Geosciences and Natural Resource Management
University of Copenhagen


MOB +45 40115084
l...@ign.ku.dkmailto:l...@ign.ku.dk


[SCIENCE_bomaerke_UK]


Fra: 
qgis-user-boun...@lists.osgeo.orgmailto:qgis-user-boun...@lists.osgeo.org 
[mailto:qgis-user-boun...@lists.osgeo.org] På vegne af Christine Griffiths
Sendt: 20. marts 2014 05:51
Til: qgis-user@lists.osgeo.orgmailto:qgis-user@lists.osgeo.org
Emne: [Qgis-user] Polygon shapefile not visible if overlapping another shapefile

Dear All,

Any help would be much appreciated as I am starting to go insane!
Every time I draw a polygon shapefile in qgis 2.2 it will only shows up if it 
does not overlap another shapefile. I cannot fathom why it is not visible. I 
never had this problem in QGIS 1.8. This new shapefile is at the top of my 
table of contents.

Thanks
Christine

Fra: qgis-user-boun...@lists.osgeo.org 
[mailto:qgis-user-boun...@lists.osgeo.org] På vegne af Christine Griffiths
Sendt: 20. marts 2014 05:51
Til: qgis-user@lists.osgeo.org
Emne: [Qgis-user] Polygon shapefile not visible if overlapping another shapefile

Dear All,

Any help would be much appreciated as I am starting to go insane!
Every time I draw a polygon shapefile in qgis 2.2 it will only shows up if it 
does not overlap another shapefile. I cannot fathom why it is not visible. I 
never had this problem in QGIS 1.8. This new shapefile is at the top of my 
table of contents.

Thanks
Christine

inline: image001.jpg___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon shapefile not visible if overlapping another shapefile

[Christine Griffiths]

Dear All,

 

Any help would be much appreciated as I am starting to go insane!

Every time I draw a polygon shapefile in qgis 2.2 it will only shows up if
it does not overlap another shapefile. I cannot fathom why it is not
visible. I never had this problem in QGIS 1.8. This new shapefile is at the
top of my table of contents. 

 

Thanks

Christine

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon .shp layer LABELING Problem

[Mike Keelan]

Hi List,

I'm having a problem with trying to get my id label to show on my Qgis 
2.0 project when applied to a .shp Polygon layer.  Works fine with a 
line type .shp but no luck on the polygon type.  I'm using the id 
setting, and that attribute setting is an integer number.  My other 
setting is:  Perimeter - placement- below line.  The layer has an opaque 
fill.
I have tried other placement location and no luck.  Changed font colors 
and size and no luck.


Should this work?  PC Windows 8

Mike K

--

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon coloring

[KLGan]

Hi Jonathan,

Thank you for the information and the links.

Cheers :-)

KLGan




On 4 October 2013 20:02, Jonathan Moules jonathanmou...@warwickshire.gov.uk
 wrote:

 If you google around (qgis manual download pdf) there are several PDF
 documents. I doubt any are for 2.0, but for basic stuff QGIS hasn't changed
 too much between versions. I.e.:
 http://manual.linfiniti.com/
 http://nathanw.net/2013/01/06/qgis-manuals/

 etc.

 Jonathan


 On 3 October 2013 11:27, KLGan 1kl...@gmail.com wrote:

 Thanks Andreas,

 I am new to QGIS, and for a moment thought this is not possible. Glad to
 know these are basic stuffs in gis :-)

 Will browse the manual (how I wish the manual is available for download)

 Thanks

 KLGan


 On 3 October 2013 17:54, Andreas Neumann a.neum...@carto.net wrote:

 Hi,

 This is very basic GIS stuff. Please consult the QGIS manual for this.

 As a hint:

 You need to define either of:

 * a rule
 * a category
 * assign a column that contains color values

 These are available in the layer properties and in the Styles tab.

 All of these are described in the QGIS manual:

 http://www.qgis.org/en/docs/user_manual/working_with_vector/vector_properties.html#style-menu

 Good luck,
 Andreas

 Am 03.10.2013 09:44, schrieb KLGan:
  Hi,
 
  I have a layer with many polygons. I want to change the color of some
 of
  the polygons. How can I do this in QGIS?
 
  Currently changes apply to all the polygons, not individual one.
 
  Thanks :-)
 
  KLGan
 
 
 
  ___
  Qgis-user mailing list
  Qgis-user@lists.osgeo.org
  http://lists.osgeo.org/mailman/listinfo/qgis-user
 

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



 This transmission is intended for the named addressee(s) only and may
 contain sensitive or protectively marked material up to RESTRICTED and
 should be handled accordingly. Unless you are the named addressee (or
 authorised to receive it for the addressee) you may not copy or use it, or
 disclose it to anyone else. If you have received this transmission in error
 please notify the sender immediately. All email traffic sent to or from us,
 including without limitation all GCSX traffic, may be subject to recording
 and/or monitoring in accordance with relevant legislation.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon coloring

[KLGan]

Hi Andreas,

Thank you for taking time to explain. This is very helpful for newbie to
GIS software like myself.

I experiment with Google Maps Engine Lite,  and than strait to QGIS. I
learning it to help NGO with their free and fair election drive.

Appreciating QGIS software and the support from members. Sharing with
anyone looking for a gis software.

Thanks :-)

KLGan




On 4 October 2013 20:12, Andreas Neumann a.neum...@carto.net wrote:

 Hi,

 Note that there is a fundamental difference between a drawing package
 and GIS.

 In a GIS you usually do not store graphical properties (like color,
 stroke-width, pattern, text settings, etc.) directly in the data. You
 would define rules how the data is styled, which are derived from your
 data columns. This way you can easily create different variations
 derived from the same data. A rule can be a category, a range or a more
 complex rule as you can define it with the expression builder.

 In a drawing package (like Illustrator, Inkscape or CAD) you directly
 store the graphical properties with each object with the consequence
 that it is much harder to create different visualization based on the
 same data.

 Hope this helps.

 Andreas

 Am 04.10.2013 12:02, schrieb Jonathan Moules:
  If you google around (qgis manual download pdf) there are several PDF
  documents. I doubt any are for 2.0, but for basic stuff QGIS hasn't
 changed
  too much between versions. I.e.:
  http://manual.linfiniti.com/
  http://nathanw.net/2013/01/06/qgis-manuals/
 
  etc.
 
  Jonathan
 
 
  On 3 October 2013 11:27, KLGan 1kl...@gmail.com wrote:
 
  Thanks Andreas,
 
  I am new to QGIS, and for a moment thought this is not possible. Glad to
  know these are basic stuffs in gis :-)
 
  Will browse the manual (how I wish the manual is available for download)
 
  Thanks
 
  KLGan
 
 
  On 3 October 2013 17:54, Andreas Neumann a.neum...@carto.net wrote:
 
  Hi,
 
  This is very basic GIS stuff. Please consult the QGIS manual for this.
 
  As a hint:
 
  You need to define either of:
 
  * a rule
  * a category
  * assign a column that contains color values
 
  These are available in the layer properties and in the Styles tab.
 
  All of these are described in the QGIS manual:
 
 
 http://www.qgis.org/en/docs/user_manual/working_with_vector/vector_properties.html#style-menu
 
  Good luck,
  Andreas
 
  Am 03.10.2013 09:44, schrieb KLGan:
  Hi,
 
  I have a layer with many polygons. I want to change the color of some
 of
  the polygons. How can I do this in QGIS?
 
  Currently changes apply to all the polygons, not individual one.
 
  Thanks :-)
 
  KLGan
 
 
 
  ___
  Qgis-user mailing list
  Qgis-user@lists.osgeo.org
  http://lists.osgeo.org/mailman/listinfo/qgis-user
 
 
  ___
  Qgis-user mailing list
  Qgis-user@lists.osgeo.org
  http://lists.osgeo.org/mailman/listinfo/qgis-user
 
 
 
  ___
  Qgis-user mailing list
  Qgis-user@lists.osgeo.org
  http://lists.osgeo.org/mailman/listinfo/qgis-user
 
 

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon coloring

[Jonathan Moules]

If you google around (qgis manual download pdf) there are several PDF
documents. I doubt any are for 2.0, but for basic stuff QGIS hasn't changed
too much between versions. I.e.:
http://manual.linfiniti.com/
http://nathanw.net/2013/01/06/qgis-manuals/

etc.

Jonathan


On 3 October 2013 11:27, KLGan 1kl...@gmail.com wrote:

 Thanks Andreas,

 I am new to QGIS, and for a moment thought this is not possible. Glad to
 know these are basic stuffs in gis :-)

 Will browse the manual (how I wish the manual is available for download)

 Thanks

 KLGan


 On 3 October 2013 17:54, Andreas Neumann a.neum...@carto.net wrote:

 Hi,

 This is very basic GIS stuff. Please consult the QGIS manual for this.

 As a hint:

 You need to define either of:

 * a rule
 * a category
 * assign a column that contains color values

 These are available in the layer properties and in the Styles tab.

 All of these are described in the QGIS manual:

 http://www.qgis.org/en/docs/user_manual/working_with_vector/vector_properties.html#style-menu

 Good luck,
 Andreas

 Am 03.10.2013 09:44, schrieb KLGan:
  Hi,
 
  I have a layer with many polygons. I want to change the color of some of
  the polygons. How can I do this in QGIS?
 
  Currently changes apply to all the polygons, not individual one.
 
  Thanks :-)
 
  KLGan
 
 
 
  ___
  Qgis-user mailing list
  Qgis-user@lists.osgeo.org
  http://lists.osgeo.org/mailman/listinfo/qgis-user
 

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user


-- 
This transmission is intended for the named addressee(s) only and may 
contain sensitive or protectively marked material up to RESTRICTED and 
should be handled accordingly. Unless you are the named addressee (or 
authorised to receive it for the addressee) you may not copy or use it, or 
disclose it to anyone else. If you have received this transmission in error 
please notify the sender immediately. All email traffic sent to or from us, 
including without limitation all GCSX traffic, may be subject to recording 
and/or monitoring in accordance with relevant legislation.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon coloring

[Andreas Neumann]

Hi,

Note that there is a fundamental difference between a drawing package
and GIS.

In a GIS you usually do not store graphical properties (like color,
stroke-width, pattern, text settings, etc.) directly in the data. You
would define rules how the data is styled, which are derived from your
data columns. This way you can easily create different variations
derived from the same data. A rule can be a category, a range or a more
complex rule as you can define it with the expression builder.

In a drawing package (like Illustrator, Inkscape or CAD) you directly
store the graphical properties with each object with the consequence
that it is much harder to create different visualization based on the
same data.

Hope this helps.

Andreas

Am 04.10.2013 12:02, schrieb Jonathan Moules:
 If you google around (qgis manual download pdf) there are several PDF
 documents. I doubt any are for 2.0, but for basic stuff QGIS hasn't changed
 too much between versions. I.e.:
 http://manual.linfiniti.com/
 http://nathanw.net/2013/01/06/qgis-manuals/
 
 etc.
 
 Jonathan
 
 
 On 3 October 2013 11:27, KLGan 1kl...@gmail.com wrote:
 
 Thanks Andreas,

 I am new to QGIS, and for a moment thought this is not possible. Glad to
 know these are basic stuffs in gis :-)

 Will browse the manual (how I wish the manual is available for download)

 Thanks

 KLGan


 On 3 October 2013 17:54, Andreas Neumann a.neum...@carto.net wrote:

 Hi,

 This is very basic GIS stuff. Please consult the QGIS manual for this.

 As a hint:

 You need to define either of:

 * a rule
 * a category
 * assign a column that contains color values

 These are available in the layer properties and in the Styles tab.

 All of these are described in the QGIS manual:

 http://www.qgis.org/en/docs/user_manual/working_with_vector/vector_properties.html#style-menu

 Good luck,
 Andreas

 Am 03.10.2013 09:44, schrieb KLGan:
 Hi,

 I have a layer with many polygons. I want to change the color of some of
 the polygons. How can I do this in QGIS?

 Currently changes apply to all the polygons, not individual one.

 Thanks :-)

 KLGan



 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user


 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user

 

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon coloring

[KLGan]

Hi,

I have a layer with many polygons. I want to change the color of some of
the polygons. How can I do this in QGIS?

Currently changes apply to all the polygons, not individual one.

Thanks :-)

KLGan
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon coloring

[Andreas Neumann]

Hi,

This is very basic GIS stuff. Please consult the QGIS manual for this.

As a hint:

You need to define either of:

* a rule
* a category
* assign a column that contains color values

These are available in the layer properties and in the Styles tab.

All of these are described in the QGIS manual:
http://www.qgis.org/en/docs/user_manual/working_with_vector/vector_properties.html#style-menu

Good luck,
Andreas

Am 03.10.2013 09:44, schrieb KLGan:
 Hi,
 
 I have a layer with many polygons. I want to change the color of some of
 the polygons. How can I do this in QGIS?
 
 Currently changes apply to all the polygons, not individual one.
 
 Thanks :-)
 
 KLGan
 
 
 
 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user
 

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon coloring

[KLGan]

Thanks Andreas,

I am new to QGIS, and for a moment thought this is not possible. Glad to
know these are basic stuffs in gis :-)

Will browse the manual (how I wish the manual is available for download)

Thanks

KLGan


On 3 October 2013 17:54, Andreas Neumann a.neum...@carto.net wrote:

 Hi,

 This is very basic GIS stuff. Please consult the QGIS manual for this.

 As a hint:

 You need to define either of:

 * a rule
 * a category
 * assign a column that contains color values

 These are available in the layer properties and in the Styles tab.

 All of these are described in the QGIS manual:

 http://www.qgis.org/en/docs/user_manual/working_with_vector/vector_properties.html#style-menu

 Good luck,
 Andreas

 Am 03.10.2013 09:44, schrieb KLGan:
  Hi,
 
  I have a layer with many polygons. I want to change the color of some of
  the polygons. How can I do this in QGIS?
 
  Currently changes apply to all the polygons, not individual one.
 
  Thanks :-)
 
  KLGan
 
 
 
  ___
  Qgis-user mailing list
  Qgis-user@lists.osgeo.org
  http://lists.osgeo.org/mailman/listinfo/qgis-user
 

 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon segment

[Jake Maier]

I want to create a new polygon and in one area it should follow the segments
of another polygon .

(I have a forest and want to delineate the stands.) Which plug-in can I use
to tell the program that from here to there it should just follow an
existing polygon either in the same shapefile (stands) or possibly in
another shapefile (boundaries)

Thank you for your help

Jake

 

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon segment

[Siki Zoltan]

Dear Jake,

you can use the topological editing. In Settings/Snap options dialog 
enable topological editing, check Avoid Intersections for the editing 
layer and optionally set a tolerance for snapping.

After it you have to draw only the missing part of the a new polygons.

Regards,
Zoltan

On Tue, 9 Jul 2013, Jake Maier wrote:


I want to create a new polygon and in one area it should follow the segments
of another polygon .

(I have a forest and want to delineate the stands.) Which plug-in can I use
to tell the program that from here to there it should just follow an
existing polygon either in the same shapefile (stands) or possibly in
another shapefile (boundaries)

Thank you for your help

Jake





___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon digitalization

[SBL]

Hi Gerardo

Now I tried with 15 pixels snapping threshold on QGIS 1.9-Master. Maybe the
problem occures less often, but it still occures...

Cheers
Stefan



--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5041549.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon digitalization

[SBL]

Hi Bert

I know quite a few people (including me) who ran into the same, pretty
anoying, problem.

And in general it is a known issue. See: http://hub.qgis.org/issues/2921
Did I understand you correctly that you already tried the workaround Marco
suggests at the end of the ticket? This would indicate that activating
topological editing is not enough (at least not in QGIS 1.8)...
Did you also try activating snapping on lines and nodes as well?

From my personal point of view this issue is a mayor obstacle of using QGIS
for digitising (though the digitising functions otherwise are really good
and handy). I would really love to see a propper fix for that and that
digitizing can not silently end up in incorrect results.

At least you could clean your already digitised and incorrect data using
GRASS and the topological vector format there...

Cheers
Stefan



--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5041455.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon digitalization

[Marco Hugentobler]

Hi Stefan

Did you try a developer version (e.g. nightly build)? I think my 
workaround does solve the problem for most usages. It does not solve the 
problem only if you do avoid intersection to background layers and those 
layers are not editable.



I would really love to see a propper fix for that and that
digitizing can not silently end up in incorrect results.


Then you might consider contributing to the geos project 
(http://trac.osgeo.org/geos/).


Regards,
Marco

Am 19.03.2013 21:11, schrieb SBL:

Hi Bert

I know quite a few people (including me) who ran into the same, pretty
anoying, problem.

And in general it is a known issue. See: http://hub.qgis.org/issues/2921
Did I understand you correctly that you already tried the workaround Marco
suggests at the end of the ticket? This would indicate that activating
topological editing is not enough (at least not in QGIS 1.8)...
Did you also try activating snapping on lines and nodes as well?

 From my personal point of view this issue is a mayor obstacle of using QGIS
for digitising (though the digitising functions otherwise are really good
and handy). I would really love to see a propper fix for that and that
digitizing can not silently end up in incorrect results.

At least you could clean your already digitised and incorrect data using
GRASS and the topological vector format there...

Cheers
Stefan



--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5041455.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user



--
Dr. Marco Hugentobler
Sourcepole -  Linux  Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentob...@sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon digitalization

[SBL]

Hi Marco

I had not tried for a while and just followed the discussion and activity
regarding this issue.
Tonight I tried again both on QGIS 1.8 and 1.9 through OSGeo4w on Windows 7
(64 bit).
I updated QGIS-dev (to Code revision 32de07d) before testing and can still
recreate the behavior, regardless if Enable topological editing is
activated or not. I also activated Enable snapping on intersection, set
the snapping tolerance to 0.001 meter for both vertex and segments and
digitized at at 1:1000 scale. Not successfull for 1.8 and 1.9-Master. I have
to admit that I created rather artificial polygons for testing, but land
cover and vegetation can have quite complex forms as well...
When I tested I had only one layer in the project, the one I was editing...

I can try on Ubuntu tomorrow...

Best regards
Stefan



--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5041490.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon digitalization

[Gerardo Jimenez]

I usually prefer to set the tolerance at 15 pixels not
 the snapping tolerance to 0.001 meter for both vertex and segments and
digitized at at 1:1000 scale
(it looks to me too little tolerance)
Give it a try (I am working with Lisboa in  win 7 32 and 64)

Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510
Mexico City
Mexico

56 22 95 16

 Date: Tue, 19 Mar 2013 15:34:34 -0700
 From: stefan.blumentr...@nina.no
 To: qgis-user@lists.osgeo.org
 Subject: Re: [Qgis-user] Polygon digitalization
 
 Hi Marco
 
 I had not tried for a while and just followed the discussion and activity
 regarding this issue.
 Tonight I tried again both on QGIS 1.8 and 1.9 through OSGeo4w on Windows 7
 (64 bit).
 I updated QGIS-dev (to Code revision 32de07d) before testing and can still
 recreate the behavior, regardless if Enable topological editing is
 activated or not. I also activated Enable snapping on intersection, set
 the snapping tolerance to 0.001 meter for both vertex and segments and
 digitized at at 1:1000 scale. Not successfull for 1.8 and 1.9-Master. I have
 to admit that I created rather artificial polygons for testing, but land
 cover and vegetation can have quite complex forms as well...
 When I tested I had only one layer in the project, the one I was editing...
 
 I can try on Ubuntu tomorrow...
 
 Best regards
 Stefan
 
 
 
 --
 View this message in context: 
 http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5041490.html
 Sent from the Quantum GIS - User mailing list archive at Nabble.com.
 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user
  ___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon digitalization

[bertGIS]

Hello.

My firm passed under QGis one year ago, and we encounter a problem with the
use of QGis for our botanists.
Indeed they will be confronted with the need of digitizing hundreds of
habitats polygon with correct joins.

Some have tested under QGis Lisboa and the result is discussable because, as
you can see on the attached image, the created polygons (with the option
avoid intersections and topological editing checked) shows some garbage.
Here I have moved one of them and we see the results.

http://osgeo-org.1560.n6.nabble.com/file/n5040680/OSGeo2.png 

Reading the former messages on this subject, I have tested the options of
digitizing polilines with 'traceedit' and poligonize with 'poligonizer', and
the GRASS vector layer. But it is not practical for our experts.

Can you help me about that ?

Thanks
Cheers
Bert



--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon digitalization

[Nick Hopton]

Just checking Bert, but have you seen this?

http://confound.me.uk/maps/ppv4.pdf

This is the way I work, I find it quicker than tracing polygons and it also
separates the job of digitising from the job of entering data (which I find
convenient).

The only other way I can think of would be to start off with a large polygon
and slice it up into smaller ones using the split features tool. Not tested
here and I don't think this method will let you cut holes in polygons.

Nick.




--
View this message in context: 
http://osgeo-org.1560.n6.nabble.com/Polygon-digitalization-tp5040680p5040717.html
Sent from the Quantum GIS - User mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon overlay

[sit]

Please,If I have two polygons that overlap in a vector, how can I cut one of 
them on the border of the other (the clip function in arcview)?
Thank you 
 
**
Legambiente - Comitato Regionale Siciliano
Gestione Riserve Naturali
Sistema Informativo Territoriale
s...@legambienteriserve.it
tel 00390916262697
fax 00390916264139
***
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon overlay

[Giovanni Manghi]

On Sat, 2011-05-14 at 20:01 +0200, sit wrote:
 Please,
 If I have two polygons that overlap in a vector, how can I cut one of
 them on the border of the other (the clip function in arcview)?
 Thank you 

vector-geoprocessing tools-clip

cheers

-- G --


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon direction/orientation

[simogeo]

Hi, 

I'd like to know if there is a plugin to calculate a polygon orientation.
Basically, if I have a basic rectangle (or even better a complex shape), I
want to know his azimuth

I ve seen the azimuth and distance plugin ... but i don't really
understand how it works and I'm even not sure it does that job. Any idea ?

Many thanks, 
simo
-- 
View this message in context: 
http://osgeo-org.1803224.n2.nabble.com/polygon-direction-orientation-tp5631577p5631577.html
Sent from the qgis-user mailing list archive at Nabble.com.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon direction/orientation

[Carson Farmer]

Perhaps you could elaborate a bit more here? How do you define the azimuth
of a complex shape? Say I have a rectangle like this [], what is the
azimuth?
An example might help?

Carson

On 13 October 2010 17:08, simogeo simon.geor...@gmail.com wrote:


 Hi,

 I'd like to know if there is a plugin to calculate a polygon orientation.
 Basically, if I have a basic rectangle (or even better a complex shape), I
 want to know his azimuth

 I ve seen the azimuth and distance plugin ... but i don't really
 understand how it works and I'm even not sure it does that job. Any idea ?

 Many thanks,
 simo
 --
 View this message in context:
 http://osgeo-org.1803224.n2.nabble.com/polygon-direction-orientation-tp5631577p5631577.html
 Sent from the qgis-user mailing list archive at Nabble.com.
 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user




-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation
National University of Ireland, Maynooth,
http://www.carsonfarmer.com/
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon colours in existing shape files.

[Ramon Andinach]

Hello,

I have a number of files that are full of filled polygons, which are available 
as .shp or .tab files. Most of these files represent geological data, so the 
colours of the polygons are an important part of visually identifying the data. 
When I was using these in Mapinfo (and from what I saw in Arc) they would come 
up with the predefined colours consistently.

When I open these up in Qgis, it does not appear to honour these colours 
(regardless of whether I open the shp or tab file). 
Is there a way to get Qgis to use these colours?

If there isn't, is there a quicker way of getting these colours back to what 
I'm expecting?
At the moment the best I can see is to group them by the code fields and then 
redo do hundreds of code colours.

-ramon.___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon colours in existing shape files.

[Anita Graser]

Hi Ramon,

I guess you'll have to redo the layer style in QGIS. Whatever format Mapinfo 
uses to store style information (the is no style information contained in any 
of the shapefile files), QGIS can't interpret it. Depending on the Mapinfo file 
format, you could propably write a converter to QGIS style files.

Best wishes,
Anita


 Original-Nachricht 
 Datum: Fri, 8 Oct 2010 17:34:57 +0800
 Von: Ramon Andinach cust...@westnet.com.au
 An: qgis-user@lists.osgeo.org
 Betreff: [Qgis-user] Polygon colours in existing shape files.

 Hello,
 
 I have a number of files that are full of filled polygons, which are
 available as .shp or .tab files. Most of these files represent geological 
 data,
 so the colours of the polygons are an important part of visually
 identifying the data. When I was using these in Mapinfo (and from what I saw 
 in Arc)
 they would come up with the predefined colours consistently.
 
 When I open these up in Qgis, it does not appear to honour these colours
 (regardless of whether I open the shp or tab file). 
 Is there a way to get Qgis to use these colours?
 
 If there isn't, is there a quicker way of getting these colours back to
 what I'm expecting?
 At the moment the best I can see is to group them by the code fields and
 then redo do hundreds of code colours.
 
 -ramon.___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user

-- 
Neu: GMX De-Mail - Einfach wie E-Mail, sicher wie ein Brief!  
Jetzt De-Mail-Adresse reservieren: http://portal.gmx.net/de/go/demail
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon colours in existing shape files.

[Pierre Chevalier Géologue]

Anita Graser claviota:
Whatever format Mapinfo uses to store style information 
Here is an example of a polygon with (horrible) graphical attributes, 
from a .mif file:


Region  1
 27
149046.45 52513.21
149238.51 52320.02
149398.07 52126.69
149623.94 52014.52
149816.52 51853.69
149913.33 51805.61
150072.11 51563.76
150134.85 51418.51
150180.57 51224.64
150259.83 51095.63
150435.38 50886.19
150321.29 50869.5
150191.18 50868.9
150077.35 50868.37
149865.17 50818.88
149571.94 50785.18
149279.47 50800
149133.63 50831.67
149005.07 50928.11
148829.25 51121.38
148831.56 51266.94
148786.62 51509.32
148756.15 51638.56
148807.75 51816.69
148826.84 51994.68
148877.93 52140.46
149046.45 52513.21
   Pen (1,2,0)
   Brush (2,16777215,16777215)
   Center 149595.77 51649.2

As you can see, this is totally different from the normal GIS 
approach, where graphical appearance of a geographical item depends on 
its data.
This mapinfo way is absolutely horrible, it regularly leads to some 
catastrophes... especially in the geological world... ;)



(the is no style information contained in any of the shapefile files), QGIS 
can't interpret it. Depending on the Mapinfo file format, you could propably 
write a converter to QGIS style files.
  
For this, you need to read the graphical attributes from the .mif file 
(not the original .tab, .dat, .id, .ind), and put the graphical 
attributes as normal attributes in the .mid file. And then only, do a 
style.


A faster approach would be to first use mapinfo. Some extensions (like 
discover) allow to do select by graphical appearance or something 
similar (if I remember well: I have no more mapinfo around 
(fortunately!)), and then you can, in the mapbasic window (which should 
always be opened somewhere), type:

   UPDATE selection SET geol_unit = Burdigalian limestone

You change the graphical selection using the same extension, you now 
pick up the green hashed polygons for instance, and then type:

   UPDATE selection SET geol_unit = Birimian B1 greywacke

And so on.

This way, you inform your attributes table.

Parenthesis: (
This is something very neat and efficient in mapinfo (yes, it has some 
qualities!): this little mapbasic window allows you to run plenty of 
commands (sql or map making or graph plotting or... ), and the 
selection always corresponds to whatever data is actually selected.
Repeating mapbasic instructions while playing with the selection is 
extremely efficient.


Idea: why not try to implement this kind of approach in qgis?
)

Once you're done, you can open your file again in qgis (or any other 
normal GIS package) and do a thematic analysis (in mapinfo terms) on 
your attributes. And you pick up the right colors, patterns, etc. for 
each formation.


Hope it helps...

A+
Pierre

--

Pierre Chevalier Géologue EI
   Mesté Duran
   32100 Condom
 Tél+fax  :09 75 27 45 62
   05 62 28 06 83
06 37 80 33 64
 Émail  :   pierrechevaliergeolCHEZfree.fr
 icq#   :   10432285
 skype  :   pierre.chevalier1967
 http://pierremariechevalier.free.fr/pierre_chevalier_geologue


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon colours in existing shape files.

[Andreas Neumann]

Hi Ramon,

What you describe is data-defined styling - taking the symbology options
from a db field.

In QGIS you can use this for label settings, like font-family, font-color,
position, styles, etc. - unfortunately this is not available for the
simpler task of styling polygons or lines.

It would be very useful to have this data-defined styling also for general
symbology options. Also the stroke-width would be a natural candidate for
data-defined styling.

Sorry for not being of better help.

Andreas

On Fri, October 8, 2010 11:34 am, Ramon Andinach wrote:
 Hello,

 I have a number of files that are full of filled polygons, which are
 available as .shp or .tab files. Most of these files represent geological
 data, so the colours of the polygons are an important part of visually
 identifying the data. When I was using these in Mapinfo (and from what I
 saw in Arc) they would come up with the predefined colours consistently.

 When I open these up in Qgis, it does not appear to honour these colours
 (regardless of whether I open the shp or tab file).
 Is there a way to get Qgis to use these colours?

 If there isn't, is there a quicker way of getting these colours back to
 what I'm expecting?
 At the moment the best I can see is to group them by the code fields and
 then redo do hundreds of code colours.

 -ramon.___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



-- 
Andreas Neumann
http://www.carto.net/neumann/
http://www.svgopen.org/

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] Polygon colours in existing shape files

[KubaZ]

 On MapInfo side: There are MapBasic functions that read object style 
values. You can use them to populate the attribute table with the 
styles. This should then be possible without mif/mid export.
On QGis side: make use of the style values already in attribute table, 
by translating them into qgis styles. I don't know yet how to automate it :)
Maybe creating an external dictionary table mapping MI styles onto qgis 
styles would be helpful.
In case your polygons have an attribute that differentiate the style, 
you can just create qgis styles from the scratch in a table or text file 
and use (python?) script in qgis to apply them to a layer. If not, 
Select objects by style function is a part of MapCAD toolset in MIPro 
you can use to differentiate polygons.


Personally, I find storing styles inside of tab file the MIPro 
advantage. In qgis you always get a random style unless you save a project.

Command line (MapBasic window equivalent) in QGIS would be a great feature.

Bests,
KubaZ



I have a number of files that are full of filled polygons, which are available 
as .shp or .tab files. Most of these files represent geological data, so the 
colours of the polygons are an important part of visually identifying the data. 
When I was using these in Mapinfo (and from what I saw in Arc) they would come 
up with the predefined colours consistently.

When I open these up in Qgis, it does not appear to honour these colours 
(regardless of whether I open the shp or tab file).
Is there a way to get Qgis to use these colours?

If there isn't, is there a quicker way of getting these colours back to what 
I'm expecting?
At the moment the best I can see is to group them by the code fields and then 
redo do hundreds of code colours.

-ramon.


--
Grasz iwygrywasz!!! Bilet na final Ligi Mistrzow!
http://linkint.pl/f282c

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon colours in existing shape files

[Anita Graser]

 In qgis you always get a random style unless you save a
 project.

You can also set a default style for a layer (button Save as Default). It 
will be applied even if you load the layer into a different/new project.

Best wishes,
Anita

-- 
Sicherer, schneller und einfacher. Die aktuellen Internet-Browser -
jetzt kostenlos herunterladen! http://portal.gmx.net/de/go/atbrowser
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon colours in existing shape files

[David Fawcett]

There is potential for automatically styling data from MapInfo data
sets, I don't know how feasible it is or whether there is a large
enough MapInfo contingent that would be interested in funding the
effort if it is possible.

In a MapServer application,  one can specify that MapServer should use
the symbology/styling info stored in the .TAB file.  This
functionality depends on the GDAL/OGR driver, so I don't know how much
of this support is in OGR code and how much is the MapServer code.
http://mapserver.org/input/vector/mapinfo.html

Also, assuming license compatibility:  http://mapserver.org/copyright.html

David.
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Fwd: [Qgis-user] polygon centroids

[Carson Farmer]

-- Forwarded message --
From: Carson Farmer carson.far...@gmail.com
Date: Wed, 29 Jul 2009 07:08:17 +0100
Subject: Re: [Qgis-user] polygon centroids
To: Geofrey Sanders geof...@weathercall.net

Hi Geofrey,

This is a known issue that has cropped up relatively recently, and I
am currently working to fix things... apologies for the inconvenience,
and I will try to fix this asap!

Carson

On 7/28/09, Geofrey Sanders geof...@weathercall.net wrote:
 I've just used the fTools 'polygon centroids' tool, and the resulting
 points are all wrong. Each one is outside its parent polygon to the
 southwest.
 Is there something I need to do to the originating layer beforehand,
 or to the result layer afterword?

 Geofrey Sanders
 Weather Call Customer Care
 geof...@weathercall.net
 voicemail: 1 (800) 260-6695
 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



-- 
Carson Farmer
National Centre for Geocomputation
John Hume Building,
National University of Ireland, Maynooth,
Maynooth,
Co. Kildare,
Ireland.
www.carsonfarmer.com



-- 
Carson Farmer
National Centre for Geocomputation
John Hume Building,
National University of Ireland, Maynooth,
Maynooth,
Co. Kildare,
Ireland.
www.carsonfarmer.com
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] polygon formation problems!

[ambrish dhaka]

Hello! Qgis users,
I am a new user of qgis and wish to switch to open source but there are some 
usage difficulties that I need to be resolved.
The polygons are created either by capture or splitting. There is no provision 
for creating an adjacent polygon with the help of a line.
Secondly, whenever there are two polygons having common segment then there is 
overlaying of lines, which means that once the vertices are touched there is no 
more single common segment and it shows into two different segments. It has 
several demerits in terms of accuracy.
I hope once these are properly addressed, I can go further into using this.

Thanks!
Ambrish Dhaka
Assistant Professor
Geography (New Delhi)

_
For the freshest Indian Jobs Visit MSN Jobs
http://www.in.msn.com/jobs___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] polygon formation problems!

[Goyo]

El sáb, 31-01-2009 a las 20:57 +, ambrish dhaka escribió:
 Hello! Qgis users,
 I am a new user of qgis and wish to switch to open source but there
 are some usage difficulties that I need to be resolved.
 The polygons are created either by capture or splitting. There is no
 provision for creating an adjacent polygon with the help of a line.
 Secondly, whenever there are two polygons having common segment then
 there is overlaying of lines, which means that once the vertices are
 touched there is no more single common segment and it shows into two
 different segments. It has several demerits in terms of accuracy.

Did you try using GRASS vector layers? They use a more topological model than 
shapefiles.

Goyo

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from text coordinates

[Agustin Lobo]

Tim,

what could I read in order to know a little sql?
I think that we should make a list of elementary
readings and tutorials entitled From elementary to advanced QGIS user:
material for the initial steps.

In general, the most prominent advantage
of QGIS comes when the user becomes able of developing his/her
own tools with PostGIS, sql, python and the R interface.
Perhaps we can select (or even write) basic material on these
tools thinking on the QGIS user (that is, someone who feels
comfortable with the QGIS menu but needs to develop specific
tools). I understand that the priority now is writing guides
and help pages for newcomers, but compiling a list such as the one
I mention would not take a long time and could be very useful
for people with some experience.
Could I open this list in the wiki?

Agus

Tim Sutton wrote:

Hi

2008/7/30 Agustin Lobo [EMAIL PROTECTED]:

Is it possible to define a polygon
(actually easier, just a rectangle)
using text coordinates?
can bookmarks be saved as text files
or exported as shp?



If you know a little sql you can do some tricks. The bookmarks are
stored in an sqlite3 database in your ~/.qgis/qgis.db database.

Using command line sql or one of several free sqlite3 admin frontends,
you can query to get out the bookmarks or create new ones e.g.

sqlite3 ~/.qgis/qgis.db

sqlite select * from tbl_bookmarks;
1|Test||-159.705|-132.842|153.48|136.971|-1
2|test2||-159.705|-132.842|153.48|136.971|-1
...
...

Regards

Tim







Thanks
Agus
--
Dr. Agustin Lobo
Institut de Ciencies de la Terra Jaume Almera (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: [EMAIL PROTECTED]
http://www.ija.csic.es/gt/obster
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user







--
Dr. Agustin Lobo
Institut de Ciencies de la Terra Jaume Almera (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: [EMAIL PROTECTED]
http://www.ija.csic.es/gt/obster
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Polygon from text coordinates

[Tim Sutton]

Hi

2008/7/30 Agustin Lobo [EMAIL PROTECTED]:
 Is it possible to define a polygon
 (actually easier, just a rectangle)
 using text coordinates?
 can bookmarks be saved as text files
 or exported as shp?


If you know a little sql you can do some tricks. The bookmarks are
stored in an sqlite3 database in your ~/.qgis/qgis.db database.

Using command line sql or one of several free sqlite3 admin frontends,
you can query to get out the bookmarks or create new ones e.g.

sqlite3 ~/.qgis/qgis.db

sqlite select * from tbl_bookmarks;
1|Test||-159.705|-132.842|153.48|136.971|-1
2|test2||-159.705|-132.842|153.48|136.971|-1
...
...

Regards

Tim






 Thanks
 Agus
 --
 Dr. Agustin Lobo
 Institut de Ciencies de la Terra Jaume Almera (CSIC)
 LLuis Sole Sabaris s/n
 08028 Barcelona
 Spain
 Tel. 34 934095410
 Fax. 34 934110012
 email: [EMAIL PROTECTED]
 http://www.ija.csic.es/gt/obster
 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user




-- 
Tim Sutton
QGIS Project Steering Committee Member - Release Manager
Visit http://qgis.org for a great open source GIS
Blog: http://tim.linfiniti.com
Skype: timlinux
Irc: timlinux on #qgis at freenode.net
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user