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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
26
revised Land Cover Feature Extraction from Satellite Imagery
added 138 characters in body
Sep
26
answered How to modify area polygon in postgres?
Sep
26
revised Land Cover Feature Extraction from Satellite Imagery
added 320 characters in body
Sep
26
comment Land Cover Feature Extraction from Satellite Imagery
This approach uses only one raster - which is usually insufficient.
Sep
26
revised Land Cover Feature Extraction from Satellite Imagery
added 320 characters in body
Sep
26
answered Land Cover Feature Extraction from Satellite Imagery
Sep
24
answered List of Virtual Globes
Sep
24
revised Problems with NA values when reading .DEM file with R 'raster' package in Windows
added 84 characters in body
Sep
23
comment Problems with NA values when reading .DEM file with R 'raster' package in Windows
This fix is better than mine because the data points in the caspian sea are also converted (these points are also negative). Nice!
Sep
23
revised Problems with NA values when reading .DEM file with R 'raster' package in Windows
Oops remove prior updates - they were incorrect
Sep
23
revised Problems with NA values when reading .DEM file with R 'raster' package in Windows
added 223 characters in body
Sep
23
comment How to locate 'symbols' by means of grid cells in MapInfo?
Punctuation saves lives
Sep
22
revised List of Map Service Software
added 13 characters in body
Sep
22
comment List of Map Service Software
Note that mapguide open source has a LGPL license and that there is also a closed version: Audodesk Infrastructure Map Server
Sep
22
comment Algorithm to fix topological errors in GIS software apps
Your own link from Geo Wizards actually represents the algorithms fairly well. What more do you expect?
Sep
22
comment Looking for open source component to create PDF from WMS in a web application
Markj: I also think mapserver is the best option. For the external wms clients you have to add maplayers, but the rest of your mapfile can stay identical. Setting the scale/extent can be done through mapscript.
Sep
22
comment Looking for open source component to create PDF from WMS in a web application
If you consider this option, you could also look to libharu (in C) or older versions of iText (java)(newer have a AGPL license which will not fit your purpose).
Sep
22
comment Efficiency of python script using SAGA and arcpy
Still no access to python here, can you try return Parms('POINTS').asPointCloud() instead of return pSpc ? I hope this works (in C++ both work, my python knowledge is the limiting factor here).
Sep
22
comment Efficiency of python script using SAGA and arcpy
google sys.arg, first hit: docs.python.org/library/sys.html ; you run it from the command line, but of course you could also specify the filenames any other way.
Sep
21
revised Problems with NA values when reading .DEM file with R 'raster' package in Windows
added 34 characters in body