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GIS Consultant @ RealDolmen, implementing web gis systems based on mapguide/autodesk infrastructure map server

Contributor to SAGA GIS, Debian and Ubuntu GIS and the OSGEO live dvd.

I hold a PhD from Ghent University: mapping soils and water table dynamics


Sep
15
revised Given a terrain, how to draw the stream flow path?
added 71 characters in body
Sep
15
revised Given a terrain, how to draw the stream flow path?
added 520 characters in body
Sep
15
answered Given a terrain, how to draw the stream flow path?
Sep
15
comment Efficiency of python script using SAGA and arcpy
That's a different project with the same name: you should look to sourceforge.net/projects/saga-gis/files/SAGA%20-%202.0/… and check for python 2.6 or 2.7 (whatever you use). I have no experience with using python on windows - better ask for help on the saga user forum
Sep
14
comment Efficiency of python script using SAGA and arcpy
I'll try to add a more documented script later. Unless you explicitely save a file to disk it will be in memory. Eg in the first sample 01_... p('GRID') is a grid in memory. You could pass it to a different module if you want.
Sep
14
comment How to eliminate small features in a grid?
1) what are you trying to predict 2) how many datapoints do you have
Sep
14
comment How to migrate GDB data into PostGIS without ESRI apps?
@Gerson Galang: from that same page: (replace /usr/local/FileGDB_API with whereever you extracted FileGDB_API_<version>.tar.gz)
Sep
13
revised Efficiency of python script using SAGA and arcpy
added 14 characters in body
Sep
13
answered Efficiency of python script using SAGA and arcpy
Sep
9
comment How to migrate GDB data into PostGIS without ESRI apps?
GCG: form that same page: (replace /usr/local/FileGDB_API with whereever you extracted FileGDB_API_<version>.tar.gz)
Sep
8
comment How to migrate GDB data into PostGIS without ESRI apps?
If you have the File GEodatabase API, you could convert directly using GDAL as well: trac.osgeo.org/gdal/wiki/FileGDB
Sep
5
comment Quickly create contour polygons from cost points using OSS for web app
This is also possible in saga gis. Can you provide an example cost_points.shp file? I can write a short script doing the same. It would be nice to see how the performance would differ from grass.
Sep
4
comment Can OpenStreetMap replace Google Earth?
Depends on the region; Depends on what you mean with topographical details
Sep
4
answered Are any fictional worlds available in some GIS format?
Sep
2
revised What is Lanczos resampling useful for in a spatial context?
added 7 characters in body
Sep
2
comment What is Lanczos resampling useful for in a spatial context?
I've integrated your comments. But within the cell, the smooth interpolator would most likely yield a better prediction
Sep
2
revised What is Lanczos resampling useful for in a spatial context?
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Sep
2
revised What is Lanczos resampling useful for in a spatial context?
added 18 characters in body
Sep
2
comment How to extract road and building features from raster data?
That is exactly what arcsan does.
Sep
2
comment How to extract road and building features from raster data?
do you have access to arcscan?