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Antonin's user avatar
Antonin
  • Member for 12 years, 3 months
  • Last seen more than a week ago
  • Switzerland
12 votes
3 answers
9k views

R/sf: Some edges are crossing in a MULTIPOLYGON. How to make it valid when using S2 geometry?

8 votes
1 answer
20k views

How to get the coordinate system from a PostGIS database?

6 votes
1 answer
4k views

Creating heatmap (concentration of points) in QGIS?

6 votes
1 answer
322 views

What is the complexity of neigborhood search in PostGIS?

5 votes
2 answers
2k views

Computing radius of gyration in PostGIS

3 votes
1 answer
267 views

How to split several lines by one polygon and get the distance of each part using sf?

3 votes
3 answers
3k views

How to generate heatmaps with QGIS1.9 plugin automatically?

3 votes
1 answer
410 views

Impossible to open the .qgs file I've just saved with QGIS 1.8

3 votes
0 answers
545 views

Shortest distance from pgrouting with cost not being length: optimal solution

3 votes
3 answers
2k views

Visualization of a big graph in 3D from postgresql/postgis

2 votes
2 answers
5k views

Problem when calculating longitude and latitude for points

2 votes
1 answer
387 views

Importing a PostGIS and a Delimited Text layer in QGIS, not overlapping

2 votes
1 answer
3k views

R/sf - Transform a geometry column made of POINTs and MULTIPOINTs into xy-coordinates columns (x1, y1, x2, y2, ...)

2 votes
2 answers
508 views

Split lines by a polygon - Why are "internal" lines split in parts using sf/st_split

2 votes
2 answers
2k views

Extract a PostGIS dump from OSM with a particular tag

2 votes
2 answers
2k views

Merging different tag filtering with Osmosis?

1 vote
1 answer
1k views

Looking for all points in a square around a given point in PostGIS

0 votes
0 answers
366 views

Extract single points of interest from OSM when described both as nodes and ways