Geographic Information Systems
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underdark
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  • Member for 11 years, 10 months
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About

Open source GIS expert, OSGeo Charter, QGIS PSC member, and author of Learning QGIS and QGIS Map Design.

Interests: open source GIS, open data, spatial databases, GIS-T, data visualization for exploration

Twitter: @underdarkGIS

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All Questions Answers
Score Newest
answer
167
Difference between WGS84 and EPSG:4326
Nov 9, 2010
answer
154
Adding Basemaps from Google or Bing in QGIS
Feb 12, 2012
answer
121
Renaming attributes/fields in shapefile attribute table using QGIS
Oct 26, 2013
answer
102
How to Start Web Mapping?
Apr 4, 2011
answer
92
Differences between DEM, DSM and DTM?
Feb 1, 2011
answer
91
Visualising WKT geometry string in QGIS
Aug 9, 2011
answer
85
What are the pros and cons of PostGIS geography and geometry types?
Mar 2, 2011
answer
77
Building effective heat-maps?
Jul 24, 2010
answer
65
How to convert/typecast from Polygon to Multipolygon in PostGIS?
Sep 1, 2011
question
62
Visualizing speed of movement on static (= printable) map?
Oct 20, 2010
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Improving on 19,000 unanswered questions?
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Locating GIS Stack Exchange Blog?
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What is this site about, really?
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Are contributions to conference proceedings considered to be "archival" publications?
10
How can I query all my data within a distance of 5 meters?
9
Should I check the z-score if the p-value of Local Moran's I is significant?
7
How to publish real-time open data
5
How do you handle changes in client focus?

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