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Adam Matan's user avatar
Adam Matan's user avatar
Adam Matan's user avatar
Adam Matan
  • Member for 13 years, 10 months
  • Last seen more than 1 year ago
143 votes
14 answers
76k views

What are Definition, Algorithms and Practical Solutions for Concave Hull?

107 votes
4 answers
39k views

What are the pros and cons of PostGIS geography and geometry types?

25 votes
6 answers
10k views

Algorithms for matching segments [closed]

18 votes
5 answers
36k views

Difference between Vincenty and great-circle distance calculations?

15 votes
8 answers
4k views

List of US government free GIS data online

14 votes
2 answers
23k views

Insert a Point into PostGIS using Python

12 votes
5 answers
7k views

Looking for a pythonic way to calculate the length of a WKT linestring

11 votes
2 answers
2k views

PostGIS: split a polygon in a given ratio

10 votes
3 answers
5k views

Shapely polygons crossing the antimeridian

9 votes
3 answers
540 views

Invalid geometry zoo

8 votes
1 answer
2k views

What is the internal format of PostGIS?

7 votes
4 answers
6k views

Garmin etrex raster maps support

5 votes
1 answer
7k views

Is there a source for free CSV files with geo data and other desired fields? [closed]

4 votes
3 answers
6k views

What's the difference between US Census DMA and MMA?

4 votes
1 answer
2k views

UK cities boundries in Ordnance survey

4 votes
3 answers
820 views

Why is ST_Distance_Sphere using WGS 80?

4 votes
1 answer
1k views

How to conveniently generate a Google Maps link from a PostGIS geometry?

3 votes
5 answers
5k views

Districts of Israel - free source

3 votes
1 answer
2k views

Python: Ray-trace a WGS84 point with heading and distance

2 votes
1 answer
919 views

Does PostGIS have a Vincenty Distance calculation?

2 votes
0 answers
751 views

OpenLayers does not appear in the QGIS plugin menu [duplicate]

2 votes
1 answer
363 views

Auto-Sanitizing illegal PostGIS WGS84 (lat, lon) coordinates

1 vote
1 answer
441 views

What is the coordinate system of this maritime natural gas field map?