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visits member for 3 years, 11 months
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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


Feb
17
answered How to read this GRIB data
Feb
17
answered How to divide a single polyline feature into multiple features based on points located on it?
Feb
15
comment In ESRI ArcMap, how do I refer to NaN or ±∞ (special floating point values) in definition queries?
I don't have access to arcgis to test it in this case, but often (in different software packages) you can get rid of these values by running a query like if(a=a,a,-9999).
Feb
15
answered After two buffers operations (+/-), why is the result file bigger than the original?
Feb
15
comment After two buffers operations (+/-), why is the result file bigger than the original?
You probably have introduced a large number of new points. Try using the simplify algorithm in postgis.
Feb
10
revised How can I programmatically determine if a shapefile contains points, polygons, or lines?
added 5 characters in body
Jan
20
answered How to read Autodesk Spatial Data File (.SDF) in PHP
Jan
20
comment How to read Autodesk Spatial Data File (.SDF) in PHP
Provide the code used to actually write the SDF. Any code that reads the SDF after you have written the file can pose concurrency problems at some point.
Jan
16
answered Looking for MapGuide 2.1.0 web extensions / web studio - where am I going wrong?
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