[Qgis-user] problems installing QGIS 1.8 on windows 7-64 bit

2012-07-11 Thread David M. Lawrence
I know others are having this problem, but I have yet to stumble on the 
solution.


I am trying to install QGIS 1.8 on my laptop (Windows 7-64 bit). Whether 
I use the standalone QGIS installer or the OsGeo4w installer, the 
procedure hangs during the postinstall stage here: running postinstall 
qgis-common.bat


In the OsGeo4w installer it just freezes, but with the standalone 
installer, I get a dialog box with the message find string (qgrep) 
utility has stopped working


findstr shows up in Task Manager tying up 50 processes, and even after I 
kill the installer and try to stop findstr in Task Manager, it keeps on 
ticking for quite some time.


Later,

Dave

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Re: [Qgis-user] [Qgis-developer] Cast your vote: Default icon theme for QGIS 2.0

2012-07-11 Thread Micha Silver

  
  
On 07/10/2012 11:16 PM, Sandro Santilli wrote:

  On Tue, Jul 10, 2012 at 10:32:49PM +0300, Micha Silver wrote:

  
   A question regarding the plans for the QGIS icon theme and the GRASS
   plugin.

   Currently GRASS (standalone) uses Robert's icons, but the QGIS plugin with
   the default theme uses other icons. That already could be a small bit of
   confusion. But when I switch QGIS to the new GIS theme, then some of the
   icons appear duplicated: Add Vector in QGIS and Add GRASS vector use the
   same icon. Another possible source of confusion.

   I'm not sure what I'd suggest to make everything work uniformly. It would
   be ideal if the GRASS application icons were identical to the GRASS plugin
   icons, but *different* from the generic QGIS "Add Vector" and "Add
   raster".

  
  
What about "Add vector" is a single icon and which kind of vector is choosen
in a second dialog ? Could be shapefile, postgis, spatialite, grass, 



Good idea. But that's more than just a change in icon theme... It
means moving some of the GRASS plugin functionality to the qgis
core.


  
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Re: [Qgis-user] Difference in Area/Perimeter calculations

2012-07-11 Thread G. Allegri
So, the differences are between using/not using the Ellipsoid option? It's
normal. Measurements on the ellipsoid are different then on a projected
CRS. The first use geodesic metrics while the latter is a planar metrics.

Giovanni

Inviato da dispositivo mobile
Il giorno 11/lug/2012 07.40, Harish harry.om2...@gmail.com ha scritto:

 Shape file is attached as Zipped to use.
 I have used *VectorGeometry ToolsExport/Add Geometry colum*n on this
 file using LayerCRS, ProjectCRS (Both are UTM Zone 43N/WGS84 code 32643),
 and Ellipsoid option which is also WGS84 in 
 *settingsoptionsmaptoolsellipsoid
 for distance calculations*. Result (area, perimeter) by using project and
 layer CRS is same (it should be), but result from using ellipsoid option is
 different than these two. Is this difference justifiable or not? (brad is
 providing a justification).
 Regards
 Harish

 On Tue, Jul 10, 2012 at 7:27 PM, Brad Nesom 
 kidsmake6until2...@gmail.comwrote:

 All crs are mathematic approximations of a surface. Each with an
 acceptable distortion of either measurement (with aesthetic distortion) or
 acceptable aesthetic distortion (with measured distortion).  For these
 reasons you should not expect two different projection systems to produce
 exact duplicate measurements. That is. Unless both systems are designed for
 accuracy.

 Brad Nesom GISP
 580-616-2029


 On Jul 10, 2012, at 2:30 AM, G. Allegri gioha...@gmail.com wrote:

 Hi Harish,
 how did you calculate the area/perimeter values?
 Could you provide us an excerpt of your data to test it?

 giovanni

 2012/7/10 Harish harry.om2...@gmail.com

 Yes, when ellipsoid is same, why there is a difference.

 Regards

 On Tue, Jul 10, 2012 at 10:57 AM, Alister Hood 
 alister.h...@synergine.com wrote:

 Hi Harish,
 It's a little unclear - are you asking for an explanation of why there
 is a difference?

 Regards,
 Alister

  Date: Mon, 9 Jul 2012 13:03:05 +0530
  From: Harish harry.om2...@gmail.com
  To: Qgis-user@lists.osgeo.org
  Subject: [Qgis-user] Difference in Area/Perimeter calculations
  Message-ID:
  CAKCjEX8-H++RBnVFF5trsKMv=
 ldqoo43bbivapod6jox2nb...@mail.gmail.com
  Content-Type: text/plain; charset=iso-8859-1
 
  There is difference between area/perimeter calculations with
 ellipsoid and
  project CRS. Attached is a screenshot in which first area and
 perimeter
  columns are generated with tool 'Export/Add geometry columns' using
  'Ellipsoid' and second area and perimeter with using 'Project CRS'
 (used
  32643: UTM zone 43 North/WGS1984).
 
  Ellipsoid/Spheroid used in both cases is WGS84.
 
  QGIS1.8, Windows7.
 
  Regards
 
 
 



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Re: [Qgis-user] Difference in Area/Perimeter calculations

2012-07-11 Thread Harish
OK, This is not a big issue but we use *'Ellipsoidal' *measurements
in*'Measure tool'
* available with* Attribute tool bar,* in all projections.

This is to be checked later, what effect it may put on precise measurements
and choices of measurement methods.

Regards
Harish
On Wed, Jul 11, 2012 at 11:58 AM, G. Allegri gioha...@gmail.com wrote:

 So, the differences are between using/not using the Ellipsoid option? It's
 normal. Measurements on the ellipsoid are different then on a projected
 CRS. The first use geodesic metrics while the latter is a planar metrics.

 Giovanni

 Inviato da dispositivo mobile
 Il giorno 11/lug/2012 07.40, Harish harry.om2...@gmail.com ha scritto:

 Shape file is attached as Zipped to use.
 I have used *VectorGeometry ToolsExport/Add Geometry colum*n on this
 file using LayerCRS, ProjectCRS (Both are UTM Zone 43N/WGS84 code 32643),
 and Ellipsoid option which is also WGS84 in 
 *settingsoptionsmaptoolsellipsoid
 for distance calculations*. Result (area, perimeter) by using project
 and layer CRS is same (it should be), but result from using ellipsoid
 option is different than these two. Is this difference justifiable or not?
 (brad is providing a justification).
 Regards
 Harish

 On Tue, Jul 10, 2012 at 7:27 PM, Brad Nesom kidsmake6until2...@gmail.com
  wrote:

 All crs are mathematic approximations of a surface. Each with an
 acceptable distortion of either measurement (with aesthetic distortion) or
 acceptable aesthetic distortion (with measured distortion).  For these
 reasons you should not expect two different projection systems to produce
 exact duplicate measurements. That is. Unless both systems are designed for
 accuracy.

 Brad Nesom GISP
 580-616-2029


 On Jul 10, 2012, at 2:30 AM, G. Allegri gioha...@gmail.com wrote:

 Hi Harish,
 how did you calculate the area/perimeter values?
 Could you provide us an excerpt of your data to test it?

 giovanni

 2012/7/10 Harish harry.om2...@gmail.com

 Yes, when ellipsoid is same, why there is a difference.

 Regards

 On Tue, Jul 10, 2012 at 10:57 AM, Alister Hood 
 alister.h...@synergine.com wrote:

 Hi Harish,
 It's a little unclear - are you asking for an explanation of why there
 is a difference?

 Regards,
 Alister

  Date: Mon, 9 Jul 2012 13:03:05 +0530
  From: Harish harry.om2...@gmail.com
  To: Qgis-user@lists.osgeo.org
  Subject: [Qgis-user] Difference in Area/Perimeter calculations
  Message-ID:
  CAKCjEX8-H++RBnVFF5trsKMv=
 ldqoo43bbivapod6jox2nb...@mail.gmail.com
  Content-Type: text/plain; charset=iso-8859-1
 
  There is difference between area/perimeter calculations with
 ellipsoid and
  project CRS. Attached is a screenshot in which first area and
 perimeter
  columns are generated with tool 'Export/Add geometry columns' using
  'Ellipsoid' and second area and perimeter with using 'Project CRS'
 (used
  32643: UTM zone 43 North/WGS1984).
 
  Ellipsoid/Spheroid used in both cases is WGS84.
 
  QGIS1.8, Windows7.
 
  Regards
 
 
 



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[Qgis-user] Smooth DEMs

2012-07-11 Thread Clemens Naderer

Hi,

is it possible to smooth DEMs (e.g. SRTM data) with QGIS, so the new 
resolution would be 1km?


Thank you!

regards Clemens

--
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Forschung und Entwicklung

UBIMET GmbH
Dresdner Straße 82
A-1200 Wien

Tel +43 (0) 1 99 71 004 49

cnade...@ubimet.com

www.unwetterzentrale.at
www.wetter.tv
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[Qgis-user] 3D polylines

2012-07-11 Thread j . allain
 Hello,Is qgis able to draw/read 3D polylines in postgis or another format ?When will this become reallity ?ThanksJonathan___
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[Qgis-user] SEXTANTE Plugin incorrectly(?) reported as broken

2012-07-11 Thread Rudi Thiede
Hi all,

I'm getting a weird message from QGIS about SEXTANTE. After
installation of the plugin, QGIS says:

 The plugin is broken. Python said:
 2

(That's the entire message.)

However, I've tested a few functions which seem to work OK. So this is
probably not critical, it's just a bit strange. If you can confirm, my
QGIS is:

 QGIS version
 1.8.0-Lisboa

 QGIS code revision
 c64bb9d

 Compiled against Qt
 4.7.4

 Running against Qt
 4.7.4

 Compiled against GDAL/OGR
 1.9.0

 Running against GDAL/OGR
 1.9dev

 GEOS Version
 3.2.2

 PostgreSQL Client Version
 9.1.4

 SpatiaLite Version
 3.1.0-RC2

 QWT Version
 5.2.2

Thanks,
Rudi
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Re: [Qgis-user] SEXTANTE Plugin incorrectly(?) reported as broken

2012-07-11 Thread Percy Langa


On 2012/07/11 10:03 AM, Rudi Thiede wrote:

Hi all,

I'm getting a weird message from QGIS about SEXTANTE. After
installation of the plugin, QGIS says:


The plugin is broken. Python said:
2


This happened to me yesterday after upgrading to the latest QGIS-dev 
build (code cbde7d4) on Win 7. This morning, I fired up QGIS and noticed 
a whole lot of python script/module errors.


I uninstalled and reinstalled all the sextante plugins. Problem fixed.

p.s. By the way, if it helps, apart from issues with the sextante plugin 
and python script/module, QGIS run along just fine.


Cheers,
Percy


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Re: [Qgis-user] Difference in Area/Perimeter calculations

2012-07-11 Thread G. Allegri
I'm sorry Harish but I cannot understand what are the steps you're doing.
Probably a language problem :)

First question. You added the area/perimeter fields and then did you filled
them with the Field calculator (Geometry-$area method)?
The Ellipsoid for measurment must be set to WGS84.
You are measuring with the Layer CRS, WGS84, WGS84 with on the fly
projection?
And, how do you measure area precisely with the Measure Tool???

giovanni




2012/7/11 Harish harry.om2...@gmail.com

 OK, This is not a big issue but we use *'Ellipsoidal' *measurements 
 in*'Measure tool'
 * available with* Attribute tool bar,* in all projections.

 This is to be checked later, what effect it may put on precise
 measurements and choices of measurement methods.

 Regards
 Harish

 On Wed, Jul 11, 2012 at 11:58 AM, G. Allegri gioha...@gmail.com wrote:

 So, the differences are between using/not using the Ellipsoid option?
 It's normal. Measurements on the ellipsoid are different then on a
 projected CRS. The first use geodesic metrics while the latter is a planar
 metrics.

 Giovanni

 Inviato da dispositivo mobile
 Il giorno 11/lug/2012 07.40, Harish harry.om2...@gmail.com ha
 scritto:

 Shape file is attached as Zipped to use.
 I have used *VectorGeometry ToolsExport/Add Geometry colum*n on
 this file using LayerCRS, ProjectCRS (Both are UTM Zone 43N/WGS84 code
 32643), and Ellipsoid option which is also WGS84 in 
 *settingsoptionsmaptoolsellipsoid
 for distance calculations*. Result (area, perimeter) by using project
 and layer CRS is same (it should be), but result from using ellipsoid
 option is different than these two. Is this difference justifiable or not?
 (brad is providing a justification).
 Regards
 Harish

 On Tue, Jul 10, 2012 at 7:27 PM, Brad Nesom 
 kidsmake6until2...@gmail.com wrote:

 All crs are mathematic approximations of a surface. Each with an
 acceptable distortion of either measurement (with aesthetic distortion) or
 acceptable aesthetic distortion (with measured distortion).  For these
 reasons you should not expect two different projection systems to produce
 exact duplicate measurements. That is. Unless both systems are designed for
 accuracy.

 Brad Nesom GISP
 580-616-2029


 On Jul 10, 2012, at 2:30 AM, G. Allegri gioha...@gmail.com wrote:

 Hi Harish,
 how did you calculate the area/perimeter values?
 Could you provide us an excerpt of your data to test it?

 giovanni

 2012/7/10 Harish harry.om2...@gmail.com

 Yes, when ellipsoid is same, why there is a difference.

 Regards

 On Tue, Jul 10, 2012 at 10:57 AM, Alister Hood 
 alister.h...@synergine.com wrote:

 Hi Harish,
 It's a little unclear - are you asking for an explanation of why
 there is a difference?

 Regards,
 Alister

  Date: Mon, 9 Jul 2012 13:03:05 +0530
  From: Harish harry.om2...@gmail.com
  To: Qgis-user@lists.osgeo.org
  Subject: [Qgis-user] Difference in Area/Perimeter calculations
  Message-ID:
  CAKCjEX8-H++RBnVFF5trsKMv=
 ldqoo43bbivapod6jox2nb...@mail.gmail.com
  Content-Type: text/plain; charset=iso-8859-1
 
  There is difference between area/perimeter calculations with
 ellipsoid and
  project CRS. Attached is a screenshot in which first area and
 perimeter
  columns are generated with tool 'Export/Add geometry columns' using
  'Ellipsoid' and second area and perimeter with using 'Project CRS'
 (used
  32643: UTM zone 43 North/WGS1984).
 
  Ellipsoid/Spheroid used in both cases is WGS84.
 
  QGIS1.8, Windows7.
 
  Regards
 
 
 





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Re: [Qgis-user] [Qgis-developer] Cast your vote: Default icon theme for QGIS 2.0

2012-07-11 Thread Tim Sutton
Hi

On Wed, Jul 11, 2012 at 8:49 AM, Daniel Lee l...@isi-solutions.org wrote:
 What if the add layer buttons were unified - one button that would then give
 you the option of adding a shapefile, database table, directory, GRASS map,
 etc.? That could consolidate and eliminate a lot of the confusion.



Indeed this is the long term goal - though it is going to take quite a
bit of work and nobody has yet volunteered to do it. Nathan has made
some nice mockups of how this would work based on discussions we had
at the Lyon hackfest.

This is his original post -
https://plus.google.com/109990125267312011029/posts/WYSNcRtsFsY -
there are more recent mockups but I can't locate them at the moment.

Regards

Tim

-- 
Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
==
Please do not email me off-list with technical
support questions. Using the lists will gain
more exposure for your issues and the knowledge
surrounding your issue will be shared with all.

Visit http://linfiniti.com to find out about:
 * QGIS programming and support services
 * Mapserver and PostGIS based hosting plans
 * FOSS Consulting Services
Skype: timlinux
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Re: [Qgis-user] [Qgis-developer] Cast your vote: Default icon theme for QGIS 2.0

2012-07-11 Thread Nathan Woodrow
There are some more mockups here[0] and here [1].  Ignore the 'To Be
Added to Canvas' section in [1] mockup, we scrapped that idea.

[0] http://dl.dropbox.com/u/6170988/open%20dialog%20with%20csv.png
[1] http://dl.dropbox.com/u/6170988/filter.png

- Nathan

On Wed, Jul 11, 2012 at 7:06 PM, Tim Sutton li...@linfiniti.com wrote:
 Hi

 On Wed, Jul 11, 2012 at 8:49 AM, Daniel Lee l...@isi-solutions.org wrote:
 What if the add layer buttons were unified - one button that would then give
 you the option of adding a shapefile, database table, directory, GRASS map,
 etc.? That could consolidate and eliminate a lot of the confusion.



 Indeed this is the long term goal - though it is going to take quite a
 bit of work and nobody has yet volunteered to do it. Nathan has made
 some nice mockups of how this would work based on discussions we had
 at the Lyon hackfest.

 This is his original post -
 https://plus.google.com/109990125267312011029/posts/WYSNcRtsFsY -
 there are more recent mockups but I can't locate them at the moment.

 Regards

 Tim

 --
 Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
 ==
 Please do not email me off-list with technical
 support questions. Using the lists will gain
 more exposure for your issues and the knowledge
 surrounding your issue will be shared with all.

 Visit http://linfiniti.com to find out about:
  * QGIS programming and support services
  * Mapserver and PostGIS based hosting plans
  * FOSS Consulting Services
 Skype: timlinux
 Irc: timlinux on #qgis at freenode.net
 ==
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[Qgis-user] Qgis 1.8 : How to do an Unilateral buffer

2012-07-11 Thread laurent celati
Hello,

I'm working on Cameroon coastal layer shapefile and i would like generate
several unilateral buffers : buffers only on one side (toward ocean) and no
toward continent.

How to do that on Qgis 1.8 ?

Thank you to throw light for me.

Kind regards.

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Re: [Qgis-user] Qgis 1.8 : How to do an Unilateral buffer

2012-07-11 Thread Micha Silver

  
  
On 11/07/2012 12:56, laurent celati
  wrote:


  Hello,

I'm working on Cameroon coastal layer shapefile and i would like generate
several unilateral buffers : buffers only on one side (toward ocean) and no
toward continent.

How to do that on Qgis 1.8 ?



If you have a polygon layer of Cameroon then create the buffer as
usual, and use the "Difference" function in Vector-Geoprocessing
tools to clip out the part over the continent. The "difference
layer" will be the boundary of Cameroon. 


  
Thank you to throw light for me.

Kind regards.

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-- 
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052-3665918

  

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Re: [Qgis-user] SEXTANTE Plugin incorrectly(?) reported as broken

2012-07-11 Thread Rudi Thiede
Thanks Percy, I'll give this a try :)

On 11 July 2012 10:13, Percy Langa percyla...@gmail.com wrote:

 On 2012/07/11 10:03 AM, Rudi Thiede wrote:

 Hi all,

 I'm getting a weird message from QGIS about SEXTANTE. After
 installation of the plugin, QGIS says:

 The plugin is broken. Python said:
 2


 This happened to me yesterday after upgrading to the latest QGIS-dev build
 (code cbde7d4) on Win 7. This morning, I fired up QGIS and noticed a whole
 lot of python script/module errors.

 I uninstalled and reinstalled all the sextante plugins. Problem fixed.

 p.s. By the way, if it helps, apart from issues with the sextante plugin and
 python script/module, QGIS run along just fine.

 Cheers,
 Percy


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Re: [Qgis-user] Several Spatialite Functions Not Found: Qgis 1.8

2012-07-11 Thread richard burcher
Hi Asahi,

Yep, that's the issue. Thx for forwarding link. 

Does anyone know when an updated geos will be applied to the osgeo4w
installer?


Cheers,

Richard

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Re: [Qgis-user] Qgis 1.8 : How to do an Unilateral buffer

2012-07-11 Thread Andreas Neumann

Hi,

the question is if you need this as a real new geometry or if a 
graphical representation is good enough.


In the new symbology of QGIS 1.7 and 1.8 you can do assymmetric lines 
by specifiying a positive or negative line offset. This would create 
your unilateral buffer graphically, but not as a new geometry.


Would this be ok for you?

Do you need help on setting this line offset?

Andreas

On Wed, 11 Jul 2012 02:56:12 -0700 (PDT), laurent celati wrote:

Hello,

I'm working on Cameroon coastal layer shapefile and i would like 
generate
several unilateral buffers : buffers only on one side (toward ocean) 
and no

toward continent.

How to do that on Qgis 1.8 ?

Thank you to throw light for me.

Kind regards.

--
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http://osgeo-org.1560.n6.nabble.com/Qgis-1-8-How-to-do-an-Unilateral-buffer-tp4987586.html
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--
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Böschacherstrasse 10A
8624 Grüt (Gossau ZH)
Switzerland
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Re: [Qgis-user] Smooth DEMs

2012-07-11 Thread richard burcher
Hi Clemens,

To smooth dems, use the following:

Install  http://www.saga-gis.org/en/index.html saga gis   install the
sextante plugin. Under the Analysis menu, open the Sextante options 
configuration, click on saga. Sextante should find your install of saga (I'm
assuming a windows platform here) at something like c:/program
files/saga-gis/. Ensure the use min covering grid system for resampling is
checked.

Click Analysis menu -- Sextante Toolbar. This opens the toolbox, you can
type filter in the text search. Alternatively, just expand saga -- grid
filter, you will have ~ 10 filter choices. Not sure of the filtering
application (cartographic or analytical) you can employ the simple filter
with its default smooth using 11*11 for ~ 990m output. If maintaining slopes
are important, review the multi-directional filter as it implements a lee
based filter.

I'm pretty sure the input raster must be tif.

#-

Moving the srtm 90m? to 1km resolution is resampling the dataset. You can
use the built in gdal tools--  http://www.gdal.org/gdalwarp.html warp 
dialog for this. In the dialog after you have entered the information click
the pencil to allow editing of the config text, add the following argument
(before the -r method) to allow resample to 1km -tr 1000 1000. Ensure
resample method is not near but bicubic.

#-

You can empose spatial scale on your orginial srtm90m by filtering with a
large filter say 11*11 (~990m support area) but the dem posting will remain
90m. This avoids resampling  may be a better way forward, I've used the
aforementioned approach for some soil tools. 


Cheers,

Richard

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Re: [Qgis-user] areal overlay

2012-07-11 Thread Micha Silver

  
  
On 11/07/2012 03:34,
  rhosk...@u.washington.edu wrote:


  I need to estimate the population of post codes by doing an areal overlay with smaller census tracts over the
postal codes.

How is this done in QGIS?


This kind of aggregate job is probably best done right in a
database. You can import both vectors into a spatialite database,
add a column for the population in the post_codes table, then run a
SUM query such as:

  .loadshp 'post codes' post_codes  LATIN1  your coordinate
  system SRID ;
  .loadshp 'census_tracts' census_tracts LATIN1  coordinate
  SRID ;
  
  ALTER TABLE post_codes ADD COLUMN population integer;
  
  UPDATE post_codes SET population=SUM(census_tracts.population)
  WHERE Intersects(post_codes.Geometry, census_tracts.Geometry)
  GROUP BY post_codes.zip;
  
If you have a large number of census tracts, you'll most
likely want to add a Spatial Index and use it in the query to speed
things up.

HTH,
Micha



  
Thanks -

R Hoskins
Anchorage, AK 


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-- 
Micha Silver
052-3665918

  

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Re: [Qgis-user] Difference in Area/Perimeter calculations

2012-07-11 Thread G. Allegri
I confirm what I wrote before. Measurements on ellipsoid is different then
on a planar projection. This is not an error, this is how geodesy is :)

giovanni

PS: and this is why there's the option to choose the ellipsoid you want to
work with...

2012/7/11 Harish harry.om2...@gmail.com

 So, to elaborate the tool and discussion, I have prepared a brief document
 in word format for *Export/Add geometry columns* tool for better
 understanding of tool and question.

 Paragraph written in bold and italic in document give hint to the query I
 am discussing.

 Hope this will sufficient to clear the problem/query from my side.

 Editing/comments on document are welcome.

 Regards

 harish




 On Wed, Jul 11, 2012 at 2:26 PM, G. Allegri gioha...@gmail.com wrote:

 I'm sorry Harish but I cannot understand what are the steps you're doing.
 Probably a language problem :)

 First question. You added the area/perimeter fields and then did you
 filled them with the Field calculator (Geometry-$area method)?
 The Ellipsoid for measurment must be set to WGS84.
 You are measuring with the Layer CRS, WGS84, WGS84 with on the fly
 projection?
 And, how do you measure area precisely with the Measure Tool???

 giovanni




 2012/7/11 Harish harry.om2...@gmail.com

 OK, This is not a big issue but we use *'Ellipsoidal' *measurements 
 in*'Measure tool'
 * available with* Attribute tool bar,* in all projections.

 This is to be checked later, what effect it may put on precise
 measurements and choices of measurement methods.

 Regards
 Harish

 On Wed, Jul 11, 2012 at 11:58 AM, G. Allegri gioha...@gmail.com wrote:

 So, the differences are between using/not using the Ellipsoid option?
 It's normal. Measurements on the ellipsoid are different then on a
 projected CRS. The first use geodesic metrics while the latter is a planar
 metrics.

 Giovanni

 Inviato da dispositivo mobile
 Il giorno 11/lug/2012 07.40, Harish harry.om2...@gmail.com ha
 scritto:

 Shape file is attached as Zipped to use.
 I have used *VectorGeometry ToolsExport/Add Geometry colum*n on
 this file using LayerCRS, ProjectCRS (Both are UTM Zone 43N/WGS84 code
 32643), and Ellipsoid option which is also WGS84 in 
 *settingsoptionsmaptoolsellipsoid
 for distance calculations*. Result (area, perimeter) by using project
 and layer CRS is same (it should be), but result from using ellipsoid
 option is different than these two. Is this difference justifiable or not?
 (brad is providing a justification).
 Regards
 Harish

 On Tue, Jul 10, 2012 at 7:27 PM, Brad Nesom 
 kidsmake6until2...@gmail.com wrote:

 All crs are mathematic approximations of a surface. Each with an
 acceptable distortion of either measurement (with aesthetic distortion) 
 or
 acceptable aesthetic distortion (with measured distortion).  For these
 reasons you should not expect two different projection systems to produce
 exact duplicate measurements. That is. Unless both systems are designed 
 for
 accuracy.

 Brad Nesom GISP
 580-616-2029


 On Jul 10, 2012, at 2:30 AM, G. Allegri gioha...@gmail.com wrote:

 Hi Harish,
 how did you calculate the area/perimeter values?
 Could you provide us an excerpt of your data to test it?

 giovanni

 2012/7/10 Harish harry.om2...@gmail.com

 Yes, when ellipsoid is same, why there is a difference.

 Regards

 On Tue, Jul 10, 2012 at 10:57 AM, Alister Hood 
 alister.h...@synergine.com wrote:

 Hi Harish,
 It's a little unclear - are you asking for an explanation of why
 there is a difference?

 Regards,
 Alister

  Date: Mon, 9 Jul 2012 13:03:05 +0530
  From: Harish harry.om2...@gmail.com
  To: Qgis-user@lists.osgeo.org
  Subject: [Qgis-user] Difference in Area/Perimeter calculations
  Message-ID:
  CAKCjEX8-H++RBnVFF5trsKMv=
 ldqoo43bbivapod6jox2nb...@mail.gmail.com
  Content-Type: text/plain; charset=iso-8859-1
 
  There is difference between area/perimeter calculations with
 ellipsoid and
  project CRS. Attached is a screenshot in which first area and
 perimeter
  columns are generated with tool 'Export/Add geometry columns'
 using
  'Ellipsoid' and second area and perimeter with using 'Project
 CRS' (used
  32643: UTM zone 43 North/WGS1984).
 
  Ellipsoid/Spheroid used in both cases is WGS84.
 
  QGIS1.8, Windows7.
 
  Regards
 
 
 








 --
 Harish Kumar Solanki, Assistant Professor
 National Institute of Rural Development (NIRD),
 Ministry of Rural Development, Government of India
 Jaipur, Rajasthan, India- Pin-302006

 Email- hksola...@nird.gov.in, harry.om2...@gmail.com,
 Tele-Fax-0141-2209905, Mo.- 09214446732, 09414291732
 Website-  http://www.nird.org.in, 
 http://watershed.rajasthan.gov.in/http://www.nird.org.in
 LinkedIn: www.linkedIn.com/in/hksolanki
  http://www.nird.org.in

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Re: [Qgis-user] Qgis 1.8 : How to do an Unilateral buffer

2012-07-11 Thread Murkor
I'm working on Cameroon coastal layer shapefile and i would like generate
several unilateral buffers : buffers only on one side (toward ocean) and no
toward continent.

laurent,

If you create your buffer of the continental edge then erase (use the
difference geoprocessing function) the continental side with the continent
feature you'll get a unilateral buffer.  Use the buffer as the input vector
layer and the continental feature as the difference layer.  This process
assumes the continent data set has a polygon geometry.

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Re: [Qgis-user] Difference in Area/Perimeter calculations

2012-07-11 Thread Harish
Now let us go deeper.

I tried one polygon of the same layer having area of around 1300 hectares.
I keep layer in Projected form as 32643 and used area calculate tool from
Attribute tool bar. I keep snapping of 20 pixels for the layer so that my
cursor should not deviate. The area comes as 13.099 Sqkm which is equal to
13099000 sqm. (layer was in UTM and tool used ellipsoid as per default in
Measure tool).

Now we look at area calculated by 'Export/Add geometry tool' previously
using ellipsoid and layer CRS (UTM) for the same polygon which comes
13108140.7 sqm and 12988046.4 sqm. respectively. The difference between
ellipsoidal measurement comes to 9140.7 (about 1 ha.) meter which may be
rounding error, and error is around .076 percent. The area difference
between ellipsoidal and projected measurement for same polygon comes to
116094.30 sqm around 16 hectare. so error is  1.23 percent which may rise
when area will increase.

The same can be repeated with the original data I have attached previously.

So if I am farmer or government surveyor which method I should use?

Regards

Harish

On Wed, Jul 11, 2012 at 7:30 PM, G. Allegri gioha...@gmail.com wrote:

 I confirm what I wrote before. Measurements on ellipsoid is different then
 on a planar projection. This is not an error, this is how geodesy is :)

 giovanni

 PS: and this is why there's the option to choose the ellipsoid you want to
 work with...


 2012/7/11 Harish harry.om2...@gmail.com

 So, to elaborate the tool and discussion, I have prepared a brief
 document in word format for *Export/Add geometry columns* tool for
 better understanding of tool and question.

 Paragraph written in bold and italic in document give hint to the query I
 am discussing.

 Hope this will sufficient to clear the problem/query from my side.

 Editing/comments on document are welcome.

 Regards

 harish




 On Wed, Jul 11, 2012 at 2:26 PM, G. Allegri gioha...@gmail.com wrote:

 I'm sorry Harish but I cannot understand what are the steps you're
 doing. Probably a language problem :)

 First question. You added the area/perimeter fields and then did you
 filled them with the Field calculator (Geometry-$area method)?
 The Ellipsoid for measurment must be set to WGS84.
 You are measuring with the Layer CRS, WGS84, WGS84 with on the fly
 projection?
 And, how do you measure area precisely with the Measure Tool???

 giovanni




 2012/7/11 Harish harry.om2...@gmail.com

 OK, This is not a big issue but we use *'Ellipsoidal' *measurements 
 in*'Measure tool'
 * available with* Attribute tool bar,* in all projections.

 This is to be checked later, what effect it may put on precise
 measurements and choices of measurement methods.

 Regards
 Harish

 On Wed, Jul 11, 2012 at 11:58 AM, G. Allegri gioha...@gmail.comwrote:

 So, the differences are between using/not using the Ellipsoid option?
 It's normal. Measurements on the ellipsoid are different then on a
 projected CRS. The first use geodesic metrics while the latter is a planar
 metrics.

 Giovanni

 Inviato da dispositivo mobile
 Il giorno 11/lug/2012 07.40, Harish harry.om2...@gmail.com ha
 scritto:

 Shape file is attached as Zipped to use.
 I have used *VectorGeometry ToolsExport/Add Geometry colum*n on
 this file using LayerCRS, ProjectCRS (Both are UTM Zone 43N/WGS84 code
 32643), and Ellipsoid option which is also WGS84 in 
 *settingsoptionsmaptoolsellipsoid
 for distance calculations*. Result (area, perimeter) by using
 project and layer CRS is same (it should be), but result from using
 ellipsoid option is different than these two. Is this difference
 justifiable or not? (brad is providing a justification).
 Regards
 Harish

 On Tue, Jul 10, 2012 at 7:27 PM, Brad Nesom 
 kidsmake6until2...@gmail.com wrote:

 All crs are mathematic approximations of a surface. Each with an
 acceptable distortion of either measurement (with aesthetic distortion) 
 or
 acceptable aesthetic distortion (with measured distortion).  For these
 reasons you should not expect two different projection systems to 
 produce
 exact duplicate measurements. That is. Unless both systems are designed 
 for
 accuracy.

 Brad Nesom GISP
 580-616-2029


 On Jul 10, 2012, at 2:30 AM, G. Allegri gioha...@gmail.com
 wrote:

 Hi Harish,
 how did you calculate the area/perimeter values?
 Could you provide us an excerpt of your data to test it?

 giovanni

 2012/7/10 Harish harry.om2...@gmail.com

 Yes, when ellipsoid is same, why there is a difference.

 Regards

 On Tue, Jul 10, 2012 at 10:57 AM, Alister Hood 
 alister.h...@synergine.com wrote:

 Hi Harish,
 It's a little unclear - are you asking for an explanation of why
 there is a difference?

 Regards,
 Alister

  Date: Mon, 9 Jul 2012 13:03:05 +0530
  From: Harish harry.om2...@gmail.com
  To: Qgis-user@lists.osgeo.org
  Subject: [Qgis-user] Difference in Area/Perimeter calculations
  Message-ID:
  CAKCjEX8-H++RBnVFF5trsKMv=
 ldqoo43bbivapod6jox2nb...@mail.gmail.com
  Content-Type: text/plain; 

[Qgis-user] R through SEXTANTE Plugin

2012-07-11 Thread ALT SHN
Hello list!

I'm having a hard time configuring R in SEXTANTE for Quantum GIS (Win7
64bits)

I have R installed, and also packages SP and RGDAL on*
 ~Documents\R\win-library\2.15\*
*
*
I don't know if I'm still missing some component, but assuming all I need
is installed, I'm not getting  the correct folder configurations . This is
what I have:

*Scripts Folder:* *C:\Users\Andre\Documents\New folder\r\scripts*
*R folder*: *C:\Program Files\R\R-2.15.1\bin\x64*

Are this configurations correct? If so any hint of what might be missing?

Thank you in advance,

Best regards,

-- 
---
Associação Leonel Trindade
SOCIEDADE DE HISTÓRIA NATURAL

Apartado 25 2564-909 Torres Vedras Portugal
Sede e Biblioteca: rua Cavaleiros da Espora Dourada, 27A 2560 Torres Vedras

Laboratório de Paleontologia e Paleoecologia: Polígono Industrial do Alto
do Ameal 2565-641 Ramalhal
http://alt-shn.blogspot.com
www.alt-shn.org
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[Qgis-user] pyqgis: setting transparent color (alpha channel) to a polygon layer

2012-07-11 Thread PIERRE Sylvain
Hi,

What's the best way to set transparent color (alpha channel) to a polygon layer 
?

I did some test using code like :

rendererV2.symbol().setColor(QColor(0,128,128,2)), color is ok but layer is not 
transparent at all...

Thanks
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Re: [Qgis-user] Sextante on Mac OS X: a working solution for running GRASS commands

2012-07-11 Thread gene
The Solution for the help files is finally very simple, just put

GRASS_HELP_FOLDER=*/Applications/GRASS-6.4.app/Contents/MacOS/docs/html*

in sextante_qgis.conf file

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Re: [Qgis-user] Difference in Area/Perimeter calculations

2012-07-11 Thread G. Allegri
I confirm that apparently some  inconsistencies arise between the various
Area tools.
I will investigate ASAP.

giovanni

2012/7/11 Harish harry.om2...@gmail.com

 Now let us go deeper.

 I tried one polygon of the same layer having area of around 1300 hectares.
 I keep layer in Projected form as 32643 and used area calculate tool from
 Attribute tool bar. I keep snapping of 20 pixels for the layer so that my
 cursor should not deviate. The area comes as 13.099 Sqkm which is equal to
 13099000 sqm. (layer was in UTM and tool used ellipsoid as per default in
 Measure tool).

 Now we look at area calculated by 'Export/Add geometry tool' previously
 using ellipsoid and layer CRS (UTM) for the same polygon which comes
 13108140.7 sqm and 12988046.4 sqm. respectively. The difference between
 ellipsoidal measurement comes to 9140.7 (about 1 ha.) meter which may be
 rounding error, and error is around .076 percent. The area difference
 between ellipsoidal and projected measurement for same polygon comes to
 116094.30 sqm around 16 hectare. so error is  1.23 percent which may rise
 when area will increase.

 The same can be repeated with the original data I have attached previously.

 So if I am farmer or government surveyor which method I should use?

 Regards

 Harish

 On Wed, Jul 11, 2012 at 7:30 PM, G. Allegri gioha...@gmail.com wrote:

 I confirm what I wrote before. Measurements on ellipsoid is different
 then on a planar projection. This is not an error, this is how geodesy is
 :)

 giovanni

 PS: and this is why there's the option to choose the ellipsoid you want
 to work with...


 2012/7/11 Harish harry.om2...@gmail.com

 So, to elaborate the tool and discussion, I have prepared a brief
 document in word format for *Export/Add geometry columns* tool for
 better understanding of tool and question.

 Paragraph written in bold and italic in document give hint to the query
 I am discussing.

 Hope this will sufficient to clear the problem/query from my side.

 Editing/comments on document are welcome.

 Regards

 harish




 On Wed, Jul 11, 2012 at 2:26 PM, G. Allegri gioha...@gmail.com wrote:

 I'm sorry Harish but I cannot understand what are the steps you're
 doing. Probably a language problem :)

 First question. You added the area/perimeter fields and then did you
 filled them with the Field calculator (Geometry-$area method)?
 The Ellipsoid for measurment must be set to WGS84.
 You are measuring with the Layer CRS, WGS84, WGS84 with on the fly
 projection?
 And, how do you measure area precisely with the Measure Tool???

 giovanni




 2012/7/11 Harish harry.om2...@gmail.com

 OK, This is not a big issue but we use *'Ellipsoidal' *measurements in
 * 'Measure tool'* available with* Attribute tool bar,* in all
 projections.

 This is to be checked later, what effect it may put on precise
 measurements and choices of measurement methods.

 Regards
 Harish

 On Wed, Jul 11, 2012 at 11:58 AM, G. Allegri gioha...@gmail.comwrote:

 So, the differences are between using/not using the Ellipsoid option?
 It's normal. Measurements on the ellipsoid are different then on a
 projected CRS. The first use geodesic metrics while the latter is a 
 planar
 metrics.

 Giovanni

 Inviato da dispositivo mobile
 Il giorno 11/lug/2012 07.40, Harish harry.om2...@gmail.com ha
 scritto:

 Shape file is attached as Zipped to use.
 I have used *VectorGeometry ToolsExport/Add Geometry colum*n on
 this file using LayerCRS, ProjectCRS (Both are UTM Zone 43N/WGS84 code
 32643), and Ellipsoid option which is also WGS84 in 
 *settingsoptionsmaptoolsellipsoid
 for distance calculations*. Result (area, perimeter) by using
 project and layer CRS is same (it should be), but result from using
 ellipsoid option is different than these two. Is this difference
 justifiable or not? (brad is providing a justification).
 Regards
 Harish

 On Tue, Jul 10, 2012 at 7:27 PM, Brad Nesom 
 kidsmake6until2...@gmail.com wrote:

 All crs are mathematic approximations of a surface. Each with an
 acceptable distortion of either measurement (with aesthetic 
 distortion) or
 acceptable aesthetic distortion (with measured distortion).  For these
 reasons you should not expect two different projection systems to 
 produce
 exact duplicate measurements. That is. Unless both systems are 
 designed for
 accuracy.

 Brad Nesom GISP
 580-616-2029


 On Jul 10, 2012, at 2:30 AM, G. Allegri gioha...@gmail.com
 wrote:

 Hi Harish,
 how did you calculate the area/perimeter values?
 Could you provide us an excerpt of your data to test it?

 giovanni

 2012/7/10 Harish harry.om2...@gmail.com

 Yes, when ellipsoid is same, why there is a difference.

 Regards

 On Tue, Jul 10, 2012 at 10:57 AM, Alister Hood 
 alister.h...@synergine.com wrote:

 Hi Harish,
 It's a little unclear - are you asking for an explanation of why
 there is a difference?

 Regards,
 Alister

  Date: Mon, 9 Jul 2012 13:03:05 +0530
  From: Harish harry.om2...@gmail.com
  To: Qgis-user@lists.osgeo.org
 

Re: [Qgis-user] pyqgis: setting transparent color (alpha channel) to a polygon layer

2012-07-11 Thread Tim Sutton
Hi

On Wed, Jul 11, 2012 at 5:11 PM, PIERRE Sylvain sylvain.pie...@cg67.fr wrote:
 Hi,



 What’s the best way to set transparent color (alpha channel) to a polygon
 layer ?



 I did some test using code like :



 rendererV2.symbol().setColor(QColor(0,128,128,2)), color is ok but layer is
 not transparent at all…


See here for an example:

https://github.com/timlinux/VectorTransparency/blob/master/vectortransparencydialog.py#L62

Regards

Tim



 Thanks


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==
Please do not email me off-list with technical
support questions. Using the lists will gain
more exposure for your issues and the knowledge
surrounding your issue will be shared with all.

Visit http://linfiniti.com to find out about:
 * QGIS programming and support services
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[Qgis-user] contours

2012-07-11 Thread john raskulinecz




Dear List, First, thanks to all who have helped me in the past. I am always 
amazed at the selfless acts by thosewith more knowledge than I have about Qgis 
and their willingness to share that kmowledge. I only hope that some day I can 
contibute in kind. Micha, thanks for the direction to Lionel 
Roubeyrie's contour plugin. I can get the txt. files to contour andcustomize 
the interval values, styles, colors, etc. but when I save the project, and then 
reopen, the new layers show up but do not display.   Any ideas how to save? 
I was wondering if there is a way to convert the new layers to vector format 
then combine with other shp. files.  again, much thanks, J.R.   
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Re: [Qgis-user] contours

2012-07-11 Thread Micha Silver

  
  
On 11/07/2012 22:17, john raskulinecz wrote:

  
  
Dear List,
 
    First, thanks to all who have helped me in the past. I am
always amazed at the selfless acts by those
with more knowledge than I have about Qgis and their willingness
to share that kmowledge. I only hope 
that some day I can contibute in kind. 
    
    Micha, thanks for the direction to Lionel Roubeyrie's
contour plugin. I can get the txt. files to contour and
customize the interval values, styles, colors, etc. but when I
save the project, and then reopen, the new 
layers show up but do not display. 
 


Did you save the contours to a shapefile after creating the layer?
Right click on the layer name and "Save As..."
Then load that new shapefile into the project and save the project.
Next time everything should show up.


    
   Any ideas how to save? I was wondering if there is a way to
convert the new layers to vector format then 
combine with other shp. files.
 
 again, much thanks,
 J.R.
 
   
 
   
   
  
  
  
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[Qgis-user] contours

2012-07-11 Thread john raskulinecz




Micha, Believe it or not since I last posted and before I rechecked the 
list I did just that. It works wonderfuly! The file I am contouring contains 
magneric readings and plays well with other layers once the crs's are set. I 
have some gravity data that is in the same txt format however that does not. Do 
you think that if I first convert to ersi shp file it will contour? Any way 
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[Qgis-user] qgis 1.8: import error with psycopg2._psycopg (windows)

2012-07-11 Thread Max Bohnet
Today I installed QuantumGIS 1.8 with the osgeo4w-installer - including 
python and psycopg2.
Quantum 1.8 works, but many plugins cannot be used because psycopg2 
cannot be imported:
When i use the python console in QGIS (or a python console with the 
python 2.7 that was installed in C:\osgeo4w\bin) the following error 
occures:



 import psycopg2

Traceback (most recent call last):

File input, line 1, in module

File C:/osgeo4w/apps/qgis/./python\qgis\utils.py, line 309, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

File 
C:\osgeo4w\apps\Python27\lib\site-packages\psycopg2\__init__.py, 
line 71, in module


from psycopg2._psycopg import BINARY, NUMBER, STRING, DATETIME, ROWID

File C:/osgeo4w/apps/qgis/./python\qgis\utils.py, line 309, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

ImportError: DLL load failed: Das Betriebssystem kann %1 nicht ausführen.





The error is also described in :
http://stackoverflow.com/questions/1306367/importerror-dll-load-failed-when-trying-to-import-psycopg2-library

I have a computer with windows 7 64bit with 32bit python (2.6, 2.7) 
installed.


I have another Python27 installed in C:\Python27
psycopg2 is working there without any problems.

i tried to install another version of psycopg2 (2.3 from osgeo) but 
with the same error.


 - however i did not manage to use the windows installer (it installs 
psycopg2 always in the normal python folder - not in the python in 
osgeo4w).

http://www.stickpeople.com/projects/python/win-psycopg/psycopg2-2.4.5.win32-py2.7-pg9.1.3-release.exe
I tried to change the registry entry for python to redirect it to 
c:\osgeo4w\python27 . But the installation fails.


When i try to install psycopg2 form the source (with easy-install oder 
C:\osgeo4w\bin\python.exe setup.py install) the following error 
occures,when  building the _psycopg file:
C:\osgeo4w\bin\psycopg2-2.4.5C:\MinGW\bin\gcc.exe -mno-cygwin -mdll 
-O -Wall -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION=\2.4.5 (dt 
dec pq3 ext)\ -DPG_VERSION_HEX=0x090005 -DPSYCOPG_EXTENSIONS=1 
-DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFR
EEMEM=1 -IC:\Python27\include-IC:\Python27\PC -I. 
-IC:/PROGRA~2/POSTGR~1/9.0/include 
-IC:/PROGRA~2/POSTGR~1/9.0/include/server -c psycopg\psycopgmodule.c 
-o build\temp.win32-2.7\Release\psycopg\psycopgmodule.o -O3 
-fno-strict-aliasing

cc1.exe: error: unrecognized command line option '-mno-cygwin'

i tried to remove the occurence of -mno-cygwin in
C:\osgeo4w\apps\python27\Lib\distutils\cygwinccompiler.py
as described in
http://stackoverflow.com/questions/9645004/python-mno-cygwin
but that does not help.
If i try to execute the command without -mno-cygwin

C:\osgeo4w\bin\psycopg2-2.4.5C:\MinGW\bin\gcc.exe -mdll -O -Wall 
-DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION=\2.4.5 (dt dec pq3 
ext)\ -DPG_VERSION_HEX=0x090005 -DPSYCOPG_EXTENSIONS=1 
-DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFR
EEMEM=1 -IC:\Python27\include-IC:\Python27\PC -I. 
-IC:/PROGRA~2/POSTGR~1/9.0/include 
-IC:/PROGRA~2/POSTGR~1/9.0/include/server -c psycopg\psycopgmodule.c -o 
build\temp.win32-2.7\Release\psycopg\psycopgmodule.o -O3 
-fno-strict-aliasing


he complains because of a missing python.h file.

I tried to reinstall the osgeo4w-python-core and psycopg2, but the 
problem is still there.


Has anyone an idea, what other solutions i could try?
Is there a possibility to use my normal python2.7 installation on 
c:\python27 for QuantumGIS?


Thanks in advance for any help,

Max
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[Qgis-user] Sextante plugin broken

2012-07-11 Thread ALT SHN
Hello,

At the end of  SEXTANTE Plugin iinstallation  receive this message:

'*The plugin is broken. Python said:*

* 3'*


If I keep the installation, everytime I start QGIS or if I try to activiate
the plugin from the Manage plugins menu I get this log:

Couldn't load plugin sextante due an error when calling its classFactory()
method

Traceback (most recent call last):
  File C:/OSGeo4W/apps/qgis-dev/./python\qgis\utils.py, line 164, in
startPlugin
plugins[packageName] = package.classFactory(iface)
  File C:/Users/Andre/.qgis//python/plugins\sextante\__init__.py, line
13, in classFactory
return SextantePlugin(iface)
  File C:/Users/Andre/.qgis//python/plugins\sextante\SextantePlugin.py,
line 26, in __init__
Sextante.initialize()
  File C:/Users/Andre/.qgis//python/plugins\sextante\core\Sextante.py,
line 84, in initialize
Sextante.addProvider(SextanteAlgorithmProvider())
  File C:/Users/Andre/.qgis//python/plugins\sextante\core\Sextante.py,
line 49, in addProvider
Sextante.updateAlgsList()
  File C:/Users/Andre/.qgis//python/plugins\sextante\core\Sextante.py,
line 108, in updateAlgsList
Sextante.loadFromProviders()
  File C:/Users/Andre/.qgis//python/plugins\sextante\core\Sextante.py,
line 113, in loadFromProviders
Sextante.loadAlgorithms()
  File C:/Users/Andre/.qgis//python/plugins\sextante\core\Sextante.py,
line 136, in loadAlgorithms
Sextante.updateProviders()
  File C:/Users/Andre/.qgis//python/plugins\sextante\core\Sextante.py,
line 120, in updateProviders
provider.loadAlgorithms()
  File
C:/Users/Andre/.qgis//python/plugins\sextante\core\AlgorithmProvider.py,
line 27, in loadAlgorithms
self._loadAlgorithms()
  File
C:/Users/Andre/.qgis//python/plugins\sextante\r\RAlgorithmProvider.py,
line 47, in _loadAlgorithms
for descriptionFile in os.listdir(folder):
WindowsError: [Error 3] The system cannot find the path specified: ''

Python version:
2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)]


QGIS version:
1.9.0-Master Master, cbde7d4

Python path: ['C:/Users/Andre/.qgis//python/plugins\\sextante_taudem',
'C:/Users/Andre/.qgis//python/plugins\\sextante',
'C:/OSGeo4W/apps/qgis-dev/./python', 'C:/Users/Andre/.qgis//python',
'C:/Users/Andre/.qgis//python/plugins',
'C:/OSGeo4W/apps/qgis-dev/./python/plugins',
'C:\\OSGeo4W\\apps\\orfeotoolbox\\wrapping\\lib',
'C:\\OSGeo4W\\apps\\orfeotoolbox\\wrapping\\Python',
'C:\\OSGeo4W\\apps\\orfeotoolbox\\python', 'C:\\',
'C:\\OSGeo4W\\bin\\python27.zip', 'C:\\OSGeo4W\\apps\\Python27\\DLLs',
'C:\\OSGeo4W\\apps\\Python27\\lib',
'C:\\OSGeo4W\\apps\\Python27\\lib\\plat-win',
'C:\\OSGeo4W\\apps\\Python27\\lib\\lib-tk', 'C:\\OSGeo4W\\bin',
'C:\\OSGeo4W\\apps\\Python27',
'C:\\OSGeo4W\\apps\\Python27\\lib\\site-packages',
'C:\\OSGeo4W\\apps\\Python27\\lib\\site-packages\\PIL',
'C:\\OSGeo4W\\apps\\Python27\\lib\\site-packages\\win32',
'C:\\OSGeo4W\\apps\\Python27\\lib\\site-packages\\win32\\lib',
'C:\\OSGeo4W\\apps\\Python27\\lib\\site-packages\\Pythonwin',
'C:\\OSGeo4W\\apps\\Python27\\lib\\site-packages\\wx-2.8-msw-unicode',
'C:\\Users\\Andre\\.qgis\\python\\plugins\\qgis2kml',
'C:\\Users\\Andre\\.qgis\\python\\plugins\\qgis2kml',
'C:\\OSGeo4W\\apps\\qgis-dev\\python\\plugins\\fTools\\tools']

Any hints?

(Win7 Home 64bits)

Thank you

André Mano
-- 
---
Associação Leonel Trindade
SOCIEDADE DE HISTÓRIA NATURAL

Apartado 25 2564-909 Torres Vedras Portugal
Sede e Biblioteca: rua Cavaleiros da Espora Dourada, 27A 2560 Torres Vedras

Laboratório de Paleontologia e Paleoecologia: Polígono Industrial do Alto
do Ameal 2565-641 Ramalhal
http://alt-shn.blogspot.com
www.alt-shn.org
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[Qgis-user] QGIS DO NOT START

2012-07-11 Thread Ing. Juan M. Bernales
When i start qgis 1.8 a message appears

“no se encuentra el punto de entrada del procedimiento sqlite3_open_v2 en la 
biblioteca de vinculos dinamicos sqlite3.dll”

I install it from osgeo4w-setup.exe from internet and standalone installer for 
windows 7/64, i got the same message 

I know this question has been answered before, but i can’t find that, any help 
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Re: [Qgis-user] QGIS DO NOT START

2012-07-11 Thread Ramon Andiñach

On 12/07/2012, at 08:08 , Ing. Juan M. Bernales wrote:

 When i start qgis 1.8 a message appears
  
 “no se encuentra el punto de entrada del procedimiento sqlite3_open_v2 en la 
 biblioteca de vinculos dinamicos sqlite3.dll”
  
 I install it from osgeo4w-setup.exe from internet and standalone installer 
 for windows 7/64, i got the same message
  
 I know this question has been answered before, but i can’t find that, any 
 help will be appreciated

It's been asked at around *once a week* for many months now.

Being somewhat unhelpful this gives 267 mails for sqlite3 in 2012,
http://www.mail-archive.com/find.php?cx=partner-pub-7266757337600734%3A2228981072cof=FORID%3A9ie=UTF-8q=qgis-user+sqlite3+2012sa=Searchsiteurl=http%3A%2F%2Fwww.mail-archive.com%2F
  and the top 4 in that search relate *directly* to your question.

Being slightly more helpful, this one has a good answer.
http://www.mail-archive.com/qgis-user@lists.osgeo.org/msg15432.html

-ramon.

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[Qgis-user] beautiful maps made by QGIS

2012-07-11 Thread maning sambale
Dear everyone,

I have a brief presentation on styling with QGIS and I want to
highlight some examples of really nice cartography made purely with
QGIS.
Most of my inspirations comes from Underdark and Tim Sutton's blogs.

If others have examples of QGIS outputs you want to showcase, please
share a link.  Thanks!

-- 
cheers,
maning
--
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wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
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Re: [Qgis-user] QGIS DO NOT START

2012-07-11 Thread Ing. Juan M. Bernales

WOOOW¡¡¡ that was it  it works fine

just like it says
http://www.mail-archive.com/qgis-user@lists.osgeo.org/msg15432.html

copy all files from
C:\OSGeo4W\bin
and paste to
C:\OSGeo4W\apps\qgis\bin\


-Mensaje original- 
From: Ramon Andiñach

Sent: Wednesday, July 11, 2012 7:47 PM
To: QGIS
Subject: Re: [Qgis-user] QGIS DO NOT START


On 12/07/2012, at 08:08 , Ing. Juan M. Bernales wrote:


When i start qgis 1.8 a message appears

“no se encuentra el punto de entrada del procedimiento sqlite3_open_v2 en 
la biblioteca de vinculos dinamicos sqlite3.dll”


I install it from osgeo4w-setup.exe from internet and standalone installer 
for windows 7/64, i got the same message


I know this question has been answered before, but i can’t find that, any 
help will be appreciated


It's been asked at around *once a week* for many months now.

Being somewhat unhelpful this gives 267 mails for sqlite3 in 2012,
http://www.mail-archive.com/find.php?cx=partner-pub-7266757337600734%3A2228981072cof=FORID%3A9ie=UTF-8q=qgis-user+sqlite3+2012sa=Searchsiteurl=http%3A%2F%2Fwww.mail-archive.com%2F 
and the top 4 in that search relate *directly* to your question.


Being slightly more helpful, this one has a good answer.
http://www.mail-archive.com/qgis-user@lists.osgeo.org/msg15432.html

-ramon.

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[Qgis-user] Save style not saving?

2012-07-11 Thread Ramon Andiñach
Hi, 

I wondered if anyone else had noticed something like this?

I've been updating some of my default style sets, and I'm noticing that if I 
use the Save Style button everything appears to go fine, but nothing is 
saved. 

It isn't a write permission issue as I can save as default and move the .qml 
file to my templates stash. 

I can load a saved style fine. 

-ramon.

QGIS 1.8
Win7 64-bit by OSGeo
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[Qgis-user] terrain plugin and gdaldem different use of z-factor and scale?

2012-07-11 Thread maning sambale
For creating hillshades/relief in a Lat/Lon CRS, the option for:
 - Terrain plugin is to use a Z-factor=20
 - GdalTools DEM is to use Scale (ratio of vert units to  horiz.)=20

More so GdalTools DEM is also using Z-Factor for vertical exaggeration.

This is very confusing for newbies.

-- 
cheers,
maning
--
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wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
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[Qgis-user] plugin help

2012-07-11 Thread chathura silva
Can we use OpenCV with QGIS ?

What is the usage qgsAffine  plugin?
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