Geographic Information Systems
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Evan Carroll

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"Man is born free, and everywhere he is in chains. One man thinks himself as in control with thousands of exp, but remains more of a slave than ♦ are." - Jean-Jacques Rousseau talking about the doomed future of Stack Exchange; 1748-10-01

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Top posts (162) All Questions Answers | Votes Newest

33 What is the purpose of PostGIS on PostgreSQL? Jan 6 '17
22 What does OGR stand for? Oct 30 '16
21 Where does the default Earth radius in ST_Distance_Sphere come from? Nov 20 '17
15 Where does the default Earth radius in ST_Distance_Sphere come from? Nov 20 '17
13 Investigating PostGIS functions to see what they are doing? Nov 11 '16
11 Why do regular expressions that work on regex101.com not work in qgis? Nov 11 '16
11 Create custom coordinate system in postgis May 10 '17
9 What regular expression engine does QGIS use? Nov 11 '16
7 Can LINESTRING “contain” POINT? Sep 5 '18
7 How does a Spatial Reference System like WGS84 have an elipsoid and a geoid? Oct 19 '16
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