Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Had another brainwave. Is it possible to create a perpendicular line at
every vertex that makes up the river line segment?

Thanks
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*


On Tue, Oct 16, 2018 at 6:15 PM Shane Carey  wrote:

> Hi All,
>
> I am getting closer to what I want. Is there a way to cut the floodplain
> polygon where it "narrows" in, i.e. at the green lines on slide 6.
> I need some way of automating this.
>
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit#slide=id.g45038c0552_0_0
> Thanks
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
>
>
> On Tue, Oct 16, 2018 at 10:45 AM Shane Carey  wrote:
>
>> What about obtaining the main direction of the river (North - South/
>> East- West) and creating the rows/columns based on that? Any advice/ help
>> would be appreciated!
>> Thanks all
>> Le gach dea ghui,
>> *Shane Carey*
>> *GIS and Data Solutions Consultant*
>>
>>
>> On Tue, Oct 16, 2018 at 7:49 AM Shane Carey  wrote:
>>
>>> Ok, I seem to be getting closer to what I need. It works well where the
>>> river is perpendicular to the column (see slide 3) but where it is
>>> parrallel (see slide 4), I would need to obtain a rows map. Is there any
>>> way of being able to tell it to create rows or columns based on the river
>>> direction?
>>>
>>> 
>>>
>>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>>
>>> Or if you think there is a better way of reaching my end goal (slide 2),
>>> I would be interested in hearing your thoughts.
>>> Thanks
>>>
>>> Thanks
>>>
>>> Le gach dea ghui,
>>> *Shane Carey*
>>> *GIS and Data Solutions Consultant*
>>>
>>>
>>> On Tue, Oct 16, 2018 at 6:38 AM Johannes Radinger <
>>> johannesradin...@gmail.com> wrote:
>>>
 It seems that would would like to have your floodplain cut based on the
 columns of the underlying raster-resolution (and not perpendicular to the
 river line as initially stated). You could use mapcalc to generate a column
 raster map (r.mapcalc expression="colmap = col()") which you could then
 transform to a vector map and use to intersect with your floodplain vector.

 best
 Johannes

 On Tue, Oct 16, 2018 at 1:24 AM Shane Carey 
 wrote:

> Hi All,
>
> I don't think v.transects is going to work for me as lines appear to
> be cutting across each other. Is there another tool in Grass that can cut
> the floodplain polygon into 5m lengths (as green lines in image attached)
>
> Thanks
>
>
>
> On Luan 15 DFómh 2018 at 15:38, Shane Carey 
> wrote:
>
>> Great thanks, is there anything available that will snap these lines
>> to the polygon edges?
>>
>> Thanks
>> Le gach dea ghui,
>> *Shane Carey*
>> *GIS and Data Solutions Consultant*
>>
>>
>> On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler 
>> wrote:
>>
>>> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey 
>>> wrote:
>>> >
>>> > Hi,
>>> >
>>> > I need to cut a floodplain polygon into one meter strips which are
>>> perpendicular to the river. This needs to be an automated process. Just
>>> wondering has anyone ever done this or similar in Grass GIS through 
>>> python
>>> or a bash script?
>>> >
>>> > The link attached shows two slides. Stage one is the first slide
>>> and slide two is what I hope to end up with.
>>> >
>>> >
>>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>>
>>> This addon seems to do (similar) perpendicular line creation:
>>>   v.civil - Generates a alignment for designing roads, channels, and
>>> ports in civil engineering
>>>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>>>
>>> Best
>>> Markus
>>>
>>> --
>>> Markus Neteler, PhD
>>> http://www.mundialis.de - free data with free software
>>> http://grass.osgeo.org
>>> http://courses.neteler.org/blog
>>>
>> --
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
> ___
> grass-user mailing list
> grass-user@lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/grass-user


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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Hi All,

I am getting closer to what I want. Is there a way to cut the floodplain
polygon where it "narrows" in, i.e. at the green lines on slide 6.
I need some way of automating this.
https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit#slide=id.g45038c0552_0_0
Thanks
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*


On Tue, Oct 16, 2018 at 10:45 AM Shane Carey  wrote:

> What about obtaining the main direction of the river (North - South/ East-
> West) and creating the rows/columns based on that? Any advice/ help would
> be appreciated!
> Thanks all
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
>
>
> On Tue, Oct 16, 2018 at 7:49 AM Shane Carey  wrote:
>
>> Ok, I seem to be getting closer to what I need. It works well where the
>> river is perpendicular to the column (see slide 3) but where it is
>> parrallel (see slide 4), I would need to obtain a rows map. Is there any
>> way of being able to tell it to create rows or columns based on the river
>> direction?
>>
>> 
>>
>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>
>> Or if you think there is a better way of reaching my end goal (slide 2),
>> I would be interested in hearing your thoughts.
>> Thanks
>>
>> Thanks
>>
>> Le gach dea ghui,
>> *Shane Carey*
>> *GIS and Data Solutions Consultant*
>>
>>
>> On Tue, Oct 16, 2018 at 6:38 AM Johannes Radinger <
>> johannesradin...@gmail.com> wrote:
>>
>>> It seems that would would like to have your floodplain cut based on the
>>> columns of the underlying raster-resolution (and not perpendicular to the
>>> river line as initially stated). You could use mapcalc to generate a column
>>> raster map (r.mapcalc expression="colmap = col()") which you could then
>>> transform to a vector map and use to intersect with your floodplain vector.
>>>
>>> best
>>> Johannes
>>>
>>> On Tue, Oct 16, 2018 at 1:24 AM Shane Carey  wrote:
>>>
 Hi All,

 I don't think v.transects is going to work for me as lines appear to be
 cutting across each other. Is there another tool in Grass that can cut the
 floodplain polygon into 5m lengths (as green lines in image attached)

 Thanks



 On Luan 15 DFómh 2018 at 15:38, Shane Carey 
 wrote:

> Great thanks, is there anything available that will snap these lines
> to the polygon edges?
>
> Thanks
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
>
>
> On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler 
> wrote:
>
>> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey 
>> wrote:
>> >
>> > Hi,
>> >
>> > I need to cut a floodplain polygon into one meter strips which are
>> perpendicular to the river. This needs to be an automated process. Just
>> wondering has anyone ever done this or similar in Grass GIS through 
>> python
>> or a bash script?
>> >
>> > The link attached shows two slides. Stage one is the first slide
>> and slide two is what I hope to end up with.
>> >
>> >
>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>
>> This addon seems to do (similar) perpendicular line creation:
>>   v.civil - Generates a alignment for designing roads, channels, and
>> ports in civil engineering
>>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>>
>> Best
>> Markus
>>
>> --
>> Markus Neteler, PhD
>> http://www.mundialis.de - free data with free software
>> http://grass.osgeo.org
>> http://courses.neteler.org/blog
>>
> --
 Le gach dea ghui,
 *Shane Carey*
 *GIS and Data Solutions Consultant*
 ___
 grass-user mailing list
 grass-user@lists.osgeo.org
 https://lists.osgeo.org/mailman/listinfo/grass-user
>>>
>>>
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Helmut Kudrnovsky]

>What about obtaining the main direction of the river (North - South/ East-
West) and creating the >rows/columns based on that? 

isn't it that was v.transect does?



-
best regards
Helmut
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

What about obtaining the main direction of the river (North - South/ East-
West) and creating the rows/columns based on that? Any advice/ help would
be appreciated!
Thanks all
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*


On Tue, Oct 16, 2018 at 7:49 AM Shane Carey  wrote:

> Ok, I seem to be getting closer to what I need. It works well where the
> river is perpendicular to the column (see slide 3) but where it is
> parrallel (see slide 4), I would need to obtain a rows map. Is there any
> way of being able to tell it to create rows or columns based on the river
> direction?
>
> 
>
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>
> Or if you think there is a better way of reaching my end goal (slide 2), I
> would be interested in hearing your thoughts.
> Thanks
>
> Thanks
>
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
>
>
> On Tue, Oct 16, 2018 at 6:38 AM Johannes Radinger <
> johannesradin...@gmail.com> wrote:
>
>> It seems that would would like to have your floodplain cut based on the
>> columns of the underlying raster-resolution (and not perpendicular to the
>> river line as initially stated). You could use mapcalc to generate a column
>> raster map (r.mapcalc expression="colmap = col()") which you could then
>> transform to a vector map and use to intersect with your floodplain vector.
>>
>> best
>> Johannes
>>
>> On Tue, Oct 16, 2018 at 1:24 AM Shane Carey  wrote:
>>
>>> Hi All,
>>>
>>> I don't think v.transects is going to work for me as lines appear to be
>>> cutting across each other. Is there another tool in Grass that can cut the
>>> floodplain polygon into 5m lengths (as green lines in image attached)
>>>
>>> Thanks
>>>
>>>
>>>
>>> On Luan 15 DFómh 2018 at 15:38, Shane Carey  wrote:
>>>
 Great thanks, is there anything available that will snap these lines to
 the polygon edges?

 Thanks
 Le gach dea ghui,
 *Shane Carey*
 *GIS and Data Solutions Consultant*


 On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler 
 wrote:

> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey 
> wrote:
> >
> > Hi,
> >
> > I need to cut a floodplain polygon into one meter strips which are
> perpendicular to the river. This needs to be an automated process. Just
> wondering has anyone ever done this or similar in Grass GIS through python
> or a bash script?
> >
> > The link attached shows two slides. Stage one is the first slide and
> slide two is what I hope to end up with.
> >
> >
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>
> This addon seems to do (similar) perpendicular line creation:
>   v.civil - Generates a alignment for designing roads, channels, and
> ports in civil engineering
>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>
> Best
> Markus
>
> --
> Markus Neteler, PhD
> http://www.mundialis.de - free data with free software
> http://grass.osgeo.org
> http://courses.neteler.org/blog
>
 --
>>> Le gach dea ghui,
>>> *Shane Carey*
>>> *GIS and Data Solutions Consultant*
>>> ___
>>> grass-user mailing list
>>> grass-user@lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/grass-user
>>
>>
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Ok, I seem to be getting closer to what I need. It works well where the
river is perpendicular to the column (see slide 3) but where it is
parrallel (see slide 4), I would need to obtain a rows map. Is there any
way of being able to tell it to create rows or columns based on the river
direction?


https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing

Or if you think there is a better way of reaching my end goal (slide 2), I
would be interested in hearing your thoughts.
Thanks

Thanks

Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*


On Tue, Oct 16, 2018 at 6:38 AM Johannes Radinger <
johannesradin...@gmail.com> wrote:

> It seems that would would like to have your floodplain cut based on the
> columns of the underlying raster-resolution (and not perpendicular to the
> river line as initially stated). You could use mapcalc to generate a column
> raster map (r.mapcalc expression="colmap = col()") which you could then
> transform to a vector map and use to intersect with your floodplain vector.
>
> best
> Johannes
>
> On Tue, Oct 16, 2018 at 1:24 AM Shane Carey  wrote:
>
>> Hi All,
>>
>> I don't think v.transects is going to work for me as lines appear to be
>> cutting across each other. Is there another tool in Grass that can cut the
>> floodplain polygon into 5m lengths (as green lines in image attached)
>>
>> Thanks
>>
>>
>>
>> On Luan 15 DFómh 2018 at 15:38, Shane Carey  wrote:
>>
>>> Great thanks, is there anything available that will snap these lines to
>>> the polygon edges?
>>>
>>> Thanks
>>> Le gach dea ghui,
>>> *Shane Carey*
>>> *GIS and Data Solutions Consultant*
>>>
>>>
>>> On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler 
>>> wrote:
>>>
 On Sun, Oct 14, 2018 at 11:28 PM Shane Carey 
 wrote:
 >
 > Hi,
 >
 > I need to cut a floodplain polygon into one meter strips which are
 perpendicular to the river. This needs to be an automated process. Just
 wondering has anyone ever done this or similar in Grass GIS through python
 or a bash script?
 >
 > The link attached shows two slides. Stage one is the first slide and
 slide two is what I hope to end up with.
 >
 >
 https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing

 This addon seems to do (similar) perpendicular line creation:
   v.civil - Generates a alignment for designing roads, channels, and
 ports in civil engineering
   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html

 Best
 Markus

 --
 Markus Neteler, PhD
 http://www.mundialis.de - free data with free software
 http://grass.osgeo.org
 http://courses.neteler.org/blog

>>> --
>> Le gach dea ghui,
>> *Shane Carey*
>> *GIS and Data Solutions Consultant*
>> ___
>> grass-user mailing list
>> grass-user@lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/grass-user
>
>
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Helmut Kudrnovsky]

>I don't think v.transects is going to work for me as lines appear to be
cutting across each other. Is there >another tool in Grass that can cut the
floodplain polygon into 5m lengths (as green lines in image attached)

what about v.mkgrid and overlay the resulting grid with the floodplain?



-
best regards
Helmut
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Johannes Radinger]

It seems that would would like to have your floodplain cut based on the
columns of the underlying raster-resolution (and not perpendicular to the
river line as initially stated). You could use mapcalc to generate a column
raster map (r.mapcalc expression="colmap = col()") which you could then
transform to a vector map and use to intersect with your floodplain vector.

best
Johannes

On Tue, Oct 16, 2018 at 1:24 AM Shane Carey  wrote:

> Hi All,
>
> I don't think v.transects is going to work for me as lines appear to be
> cutting across each other. Is there another tool in Grass that can cut the
> floodplain polygon into 5m lengths (as green lines in image attached)
>
> Thanks
>
>
>
> On Luan 15 DFómh 2018 at 15:38, Shane Carey  wrote:
>
>> Great thanks, is there anything available that will snap these lines to
>> the polygon edges?
>>
>> Thanks
>> Le gach dea ghui,
>> *Shane Carey*
>> *GIS and Data Solutions Consultant*
>>
>>
>> On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler  wrote:
>>
>>> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey 
>>> wrote:
>>> >
>>> > Hi,
>>> >
>>> > I need to cut a floodplain polygon into one meter strips which are
>>> perpendicular to the river. This needs to be an automated process. Just
>>> wondering has anyone ever done this or similar in Grass GIS through python
>>> or a bash script?
>>> >
>>> > The link attached shows two slides. Stage one is the first slide and
>>> slide two is what I hope to end up with.
>>> >
>>> >
>>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>>
>>> This addon seems to do (similar) perpendicular line creation:
>>>   v.civil - Generates a alignment for designing roads, channels, and
>>> ports in civil engineering
>>>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>>>
>>> Best
>>> Markus
>>>
>>> --
>>> Markus Neteler, PhD
>>> http://www.mundialis.de - free data with free software
>>> http://grass.osgeo.org
>>> http://courses.neteler.org/blog
>>>
>> --
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
> ___
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Hi All,

I don't think v.transects is going to work for me as lines appear to be
cutting across each other. Is there another tool in Grass that can cut the
floodplain polygon into 5m lengths (as green lines in image attached)

Thanks



On Luan 15 DFómh 2018 at 15:38, Shane Carey  wrote:

> Great thanks, is there anything available that will snap these lines to
> the polygon edges?
>
> Thanks
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
>
>
> On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler  wrote:
>
>> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey  wrote:
>> >
>> > Hi,
>> >
>> > I need to cut a floodplain polygon into one meter strips which are
>> perpendicular to the river. This needs to be an automated process. Just
>> wondering has anyone ever done this or similar in Grass GIS through python
>> or a bash script?
>> >
>> > The link attached shows two slides. Stage one is the first slide and
>> slide two is what I hope to end up with.
>> >
>> >
>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>
>> This addon seems to do (similar) perpendicular line creation:
>>   v.civil - Generates a alignment for designing roads, channels, and
>> ports in civil engineering
>>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>>
>> Best
>> Markus
>>
>> --
>> Markus Neteler, PhD
>> http://www.mundialis.de - free data with free software
>> http://grass.osgeo.org
>> http://courses.neteler.org/blog
>>
> --
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Great thanks, is there anything available that will snap these lines to the
polygon edges?

Thanks
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*


On Mon, Oct 15, 2018 at 3:30 PM Markus Neteler  wrote:

> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey  wrote:
> >
> > Hi,
> >
> > I need to cut a floodplain polygon into one meter strips which are
> perpendicular to the river. This needs to be an automated process. Just
> wondering has anyone ever done this or similar in Grass GIS through python
> or a bash script?
> >
> > The link attached shows two slides. Stage one is the first slide and
> slide two is what I hope to end up with.
> >
> >
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>
> This addon seems to do (similar) perpendicular line creation:
>   v.civil - Generates a alignment for designing roads, channels, and
> ports in civil engineering
>   https://grass.osgeo.org/grass7/manuals/addons/v.civil.html
>
> Best
> Markus
>
> --
> Markus Neteler, PhD
> http://www.mundialis.de - free data with free software
> http://grass.osgeo.org
> http://courses.neteler.org/blog
>
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Markus Neteler]

On Sun, Oct 14, 2018 at 11:28 PM Shane Carey  wrote:
>
> Hi,
>
> I need to cut a floodplain polygon into one meter strips which are 
> perpendicular to the river. This needs to be an automated process. Just 
> wondering has anyone ever done this or similar in Grass GIS through python or 
> a bash script?
>
> The link attached shows two slides. Stage one is the first slide and slide 
> two is what I hope to end up with.
>
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing

This addon seems to do (similar) perpendicular line creation:
  v.civil - Generates a alignment for designing roads, channels, and
ports in civil engineering
  https://grass.osgeo.org/grass7/manuals/addons/v.civil.html

Best
Markus

-- 
Markus Neteler, PhD
http://www.mundialis.de - free data with free software
http://grass.osgeo.org
http://courses.neteler.org/blog
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Just one quick thing, do you know if dleft and dright can snap to the
polygon edge?

Thanks

On Domh 14 DFómh 2018 at 23:30, Shane Carey  wrote:

> Super, thanks Johannes. I'll check it out and see how it works.
> Super - thanks
>
> On Domh 14 DFómh 2018 at 23:15, Johannes Radinger <
> johannesradin...@gmail.com> wrote:
>
>> Shane,
>>
>> have a look at the GRASS v.transect add-on:
>> https://grass.osgeo.org/grass74/manuals/addons/v.transects.html
>> The manual says: "Creates transect lines or quadrilateral areas at
>> regular intervals perpendicular to a polyline."
>>
>> HTH
>> Johannes
>>
>> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey  wrote:
>>
>>> Hi,
>>>
>>> I need to cut a floodplain polygon into one meter strips which are
>>> perpendicular to the river. This needs to be an automated process. Just
>>> wondering has anyone ever done this or similar in Grass GIS through python
>>> or a bash script?
>>>
>>> The link attached shows two slides. Stage one is the first slide and
>>> slide two is what I hope to end up with.
>>>
>>>
>>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>>
>>> Any help would be appreciated. Thanks in advance.
>>>
>>> Le gach dea ghui,
>>> *Shane Carey*
>>> *GIS and Data Solutions Consultant*
>>>
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>>
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> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
>
-- 
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Shane Carey]

Super, thanks Johannes. I'll check it out and see how it works.
Super - thanks

On Domh 14 DFómh 2018 at 23:15, Johannes Radinger <
johannesradin...@gmail.com> wrote:

> Shane,
>
> have a look at the GRASS v.transect add-on:
> https://grass.osgeo.org/grass74/manuals/addons/v.transects.html
> The manual says: "Creates transect lines or quadrilateral areas at regular
> intervals perpendicular to a polyline."
>
> HTH
> Johannes
>
> On Sun, Oct 14, 2018 at 11:28 PM Shane Carey  wrote:
>
>> Hi,
>>
>> I need to cut a floodplain polygon into one meter strips which are
>> perpendicular to the river. This needs to be an automated process. Just
>> wondering has anyone ever done this or similar in Grass GIS through python
>> or a bash script?
>>
>> The link attached shows two slides. Stage one is the first slide and
>> slide two is what I hope to end up with.
>>
>>
>> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>>
>> Any help would be appreciated. Thanks in advance.
>>
>> Le gach dea ghui,
>> *Shane Carey*
>> *GIS and Data Solutions Consultant*
>>
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> --
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*Shane Carey*
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Re: [GRASS-user] Cut a floodplain polygon with 1meter wide polygons perpendicular to its river channel

[Johannes Radinger]

Shane,

have a look at the GRASS v.transect add-on:
https://grass.osgeo.org/grass74/manuals/addons/v.transects.html
The manual says: "Creates transect lines or quadrilateral areas at regular
intervals perpendicular to a polyline."

HTH
Johannes

On Sun, Oct 14, 2018 at 11:28 PM Shane Carey  wrote:

> Hi,
>
> I need to cut a floodplain polygon into one meter strips which are
> perpendicular to the river. This needs to be an automated process. Just
> wondering has anyone ever done this or similar in Grass GIS through python
> or a bash script?
>
> The link attached shows two slides. Stage one is the first slide and slide
> two is what I hope to end up with.
>
>
> https://docs.google.com/presentation/d/1x7IQ3BJlLLSb6R2atxIIiaeWzyCqCZQ3uWaGPZyo6ds/edit?usp=sharing
>
> Any help would be appreciated. Thanks in advance.
>
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
> ___
> grass-user mailing list
> grass-user@lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/grass-user
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