[gdal-dev] Looking for a geoprocessing script for simple areal interpolation of population

I am looking for a geoprocessing script for simple areal interpolation of population Can anyone help? Regards. David ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev

Re: [gdal-dev] [GDAL 1.7] GDAL_Contour png file

Ari Jolma wrote: Polygonize uses 4-connectness. Polygonize method doesn't seem to have connectedness parameter, which is a pity IMHO. This is easy to fix, I added an enhancement request with a diff: http://trac.osgeo.org/gdal/ticket/3619 Ari ___

Re: [gdal-dev] [GDAL 1.7] GDAL_Contour png file

Paul, Paul Meems wrote: Hi List, I'm trying to vectorize a png file to a shapefile. This png file only contains lines with one color. Using this command a nice shapefile is generated: gdal_contour -a elev test.png contour.shp -i 10.0 -snodata 255 But the shapefile is the wrong size up. Up and

Re: [gdal-dev] Shift of geoTiff

Paul Meems wrote: One of our user of MapWindow GIS noticed a shift of its geotiff by one pixel width. I took a look at it to see if the problem is with MapWindow or GDAL, because MapWindow uses GDAL internally. The provided metadata of the geotiff is: GROUP = L1_METADATA_FILE GROUP = METAD

Re: [gdal-dev] Polygon area with intersection?

Rudi von Staden wrote: Hi all, I need to create a tool that will take a set of points (say in a csv file) given in WGS84 lat/long, and work out the area of the outer hull that encompasses the points. The points could be anywhere in Southern Africa. I was thinking to use the following approa

Re: [gdal-dev] GDAL SVN question

Gillian WALTER wrote: Hi, This question is about GDAL's SVN rather than the library itself, but what are the "spike" and "sandbox" directories used for? Gillian, I have used "spike" as an area for deprecated code. Sort of a junkyard. We have been using the sandbox area as an area for deve

Re: [gdal-dev] Shift of geoTiff

Le 07/06/2010 16:15, Paul Meems a écrit : One of our user of MapWindow GIS noticed a shift of its geotiff by one pixel width. Size is 8321, 7261 Origin = (440699.994,-3881100.000) Pixel Size = (30.000,-30.000) Lower Left ( 440700.000,-40989

[gdal-dev] Polygon area with intersection?

Hi all, I need to create a tool that will take a set of points (say in a csv file) given in WGS84 lat/long, and work out the area of the outer hull that encompasses the points. The points could be anywhere in Southern Africa. I was thinking to use the following approach (using gdal/ogr and P

[gdal-dev] Shift of geoTiff

One of our user of MapWindow GIS noticed a shift of its geotiff by one pixel width. I took a look at it to see if the problem is with MapWindow or GDAL, because MapWindow uses GDAL internally. The provided metadata of the geotiff is: GROUP = L1_METADATA_FILE GROUP = METADATA_FILE_INFO ORIGI

[gdal-dev] GDAL SVN question

Hi, This question is about GDAL's SVN rather than the library itself, but what are the "spike" and "sandbox" directories used for? Thanks, Gillian Walter Software Developer Geospatial Services Inc. 57 Auriga Drive - Suite 201 Ottawa, ON K2E 8B2 Telephone: (613) 727-1087 #245 Facsimile: (613)

[gdal-dev] [GDAL 1.7] GDAL_Contour png file

Hi List, I'm trying to vectorize a png file to a shapefile. This png file only contains lines with one color. Using this command a nice shapefile is generated: gdal_contour -a elev test.png contour.shp -i 10.0 -snodata 255 But the shapefile is the wrong size up. Up and bottom are flipped. How do