johanvdw

3,299 reputation

521

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	age	31
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	seen	16 hours ago
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PhD Student @ Ghent University: mapping soils and water table dynamics

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.

	3,299 reputation	bio	website		visits	member for	2 years, 10 months
521 badges		location			seen	16 hours ago

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131 Answers

newest activity votes

Why does GPS positioning require four satellites?

jul 30 '11 at 21:45

Given a terrain, how to draw the stream flow path?

sep 15 '11 at 7:47

Opensource solutions for finishing maps

jul 4 '12 at 12:27

Are any fictional worlds available in some GIS format?

sep 4 '11 at 16:52

Why is the 'straight line' path across continent so curved?

mar 6 '11 at 19:06

How to calculate Topographic Ruggedness Index in Arcgis?

feb 11 '11 at 7:46

List of freely available GIS books

dec 9 '10 at 9:08

Surface distance on DEM between two coordinates

dec 9 '10 at 12:52

Converting ms-access database into easy to use spatial database

sep 22 at 13:45

Open Source Tool capable of reading Esri File Geodatabase (.gdb)?

dec 9 '10 at 9:04

R spplot tutorials

may 29 '12 at 20:24

How can I programmatically determine if a shapefile contains points, polygons, or lines?

feb 24 '11 at 17:34

Problems with NA values when reading .DEM file with R 'raster' package in Windows

sep 21 '11 at 12:39

Statistical relationships between rasters

jan 5 '11 at 12:32

How to convince an organization to move towards open source GIS?

apr 18 at 16:56

Best way to create tiles

dec 7 at 13:01

Are there any attempts to replace the shapefile?

feb 20 '12 at 20:45

Web mapping software for a huge raster time series?

jan 14 '12 at 1:33

Interpolation of Three Data Points

jan 13 '11 at 10:00

Open source methods for kriging?

aug 13 '10 at 8:21

Which ESRI software is need to open MXD files?

dec 19 at 10:45

Editing a KML file or converting KML to Editable format with attributes

oct 14 at 8:31

How to generalize and vectorize a LandUseClassification raster file?

aug 16 at 21:09

making maps using Qt

may 23 '12 at 19:17

How to generate a random but believable digital elevation model?

feb 28 '12 at 8:22

How is margin of error reported on a map?

aug 1 '11 at 21:09

GIS Solutions And ROI For Local Government

jun 21 '11 at 13:47

Interview questions for hiring a GIS Analyst

feb 16 '11 at 8:14

statistics by rectangle (raster image)

jan 20 '11 at 13:27

How to perform Ordinary Kriging in SAGA via QGIS SEXTANTE Plug-in?

jun 21 '12 at 19:48