Skip to main content
Nicklas Avén's user avatar
Nicklas Avén's user avatar
Nicklas Avén's user avatar
Nicklas Avén
  • Member for 13 years, 8 months
  • Last seen more than a month ago
  • Lysvik, Sweden
64 votes
Accepted

What are the FOSS equivalents to these ArcGIS products?

58 votes
Accepted

Selecting features that do NOT intersect in PostGIS

55 votes
Accepted

What is the unit used in ST_Distance()?

35 votes
Accepted

Creating regular point grid inside polygon in PostGIS

33 votes
Accepted

Counting Points in Polygon with PostGIS

28 votes
Accepted

Point in Polygon analysis of 200 million points

23 votes

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

21 votes
Accepted

Would PostGIS offer an advantage over MySQL for a produce farm application?

20 votes
Accepted

assign unique id to point features

18 votes
Accepted

What is the internal format of PostGIS?

14 votes
Accepted

PostGIS ST within does not exist

14 votes

Getting started with PostGIS?

14 votes
Accepted

Ring Self-Intersections in PostGIS

13 votes
Accepted

ST_ClosestPoint(line, point) does not intersect line

13 votes
Accepted

How to interpolate GPS Positions in PostGIS

13 votes

When should I use ST_Buffer?

12 votes
Accepted

How to handle TIME in GIS?

12 votes
Accepted

Calling ST_Transform in geometry that is already in target srid?

11 votes
Accepted

Clustering undirected lines

11 votes

Java, GIS knowledge...What next?

11 votes

The general public and their ability to use GIS applications - do we still need paper maps?

11 votes

Map matching links and ideas?

11 votes

How to sum values of points inside polygons?

11 votes

Spatial databases learning resources for newbies?

10 votes

Fixing performance problem in PostGIS ST_Intersects

10 votes
Accepted

Filling a polygon with lines using Postgis

10 votes

Visualizing speed of movement on static (= printable) map?

10 votes

Is there a way to decrease redraws in ARCGIS?

9 votes

How to create spider diagrams (hub lines) in PostGIS?

9 votes

Examples of GIS projects gone wrong?

1
2 3 4 5
8