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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


Jan
16
answered How to determine the version of an SDF file?
Jan
16
answered Where to start with Web GIS development, or which technology to select?
Jan
15
revised Web mapping software for a huge raster time series?
added 800 characters in body
Jan
15
comment Web mapping software for a huge raster time series?
No, the file should be on the filesystem. No point in using a database. Even just opening a connection will probably take more time than the code above.
Jan
15
revised Web mapping software for a huge raster time series?
added 140 characters in body
Jan
14
answered Web mapping software for a huge raster time series?
Jan
14
comment Open Source Challenge: Automated Mastermap update in Oracle Spatial
Do you want to keep using oracle spatial or not (a bit unclear whether storing the data is part of the "open source stack")?
Jan
7
revised How can I make a polyline wrap around the world?
edited tags
Dec
31
comment Can I take an intersection for polygons WITH A COMMON ID?
You could make a full intersection and delete all elements which don't have the same ID in the result.
Dec
18
answered How to create a custom Balloon for Google Earth?
Dec
13
answered Using OpenLayers - seeking example for saving feature to database using Ajax
Dec
13
comment Completely Brand New to GIS - Help picking technology from the pros
Mapguide is around as a commercial gis web server since 1996. So certainly older than GeoServer, and the age is certainly not a reason to avoid it.
Nov
25
comment What are some Domain Specific Languages (DSLs) for GIS?
Please add the definition rather than linking to an external website which may change content/go offline anytime.
Nov
25
comment Is Geoslavery complicity a violation of GISP code of Ethics?
Please cite at least the definitions rather than linking to pdf files which may disappear anytime.
Oct
4
comment How to call a DLL file from VBA?
Mentioning which library you want to use, to solve which problem may lead to much more useful answers.
Oct
4
comment Why is my DEM not caching correctly?
What often works in arcgis is using the raster calculator and calculating a new grid with exactly the same values as the old one. Often raster problems are gone when using the new grid. I suppose it recalculates some statistics and caches.
Oct
4
comment How to build pgRouting with CGAL?
No need to reboot. And if you build a package from source you always need *-dev packages.
Oct
4
comment How to build pgRouting with CGAL?
It will not solve your problem, but never run cmake (or make) as root. It may cause unexpected problems, and is a bad practice anyway.
Sep
30
comment Problems with NA values when reading .DEM file with R 'raster' package in Windows
In fact you can combine both methods (this answer and my/roberts answers): r <- raster('E020N90.DEM') and then run values(r)<-readBin("E020N90.DEM", "integer", size = 2, signed = TRUE, n = nrows(r) * ncols(r), endian = "big") and then values(r)[values(r)==-9999]<-NA
Sep
28
comment How do you get mapserver for windows work on 64 bit microsoft 2008 server?
Supply more info: which installer did you use? How did you start apache? How did you test apache? Check the apache logfiles: what do they say?