1
vote
1answer
421 views

Intersection with JTS Geometry

I want to calculate an intersection between two geometries with the intersection function from JTS Geometry. What happens, if the geometries have different SRIDs? SimpleFeature sf1=...; //SRID ...
5
votes
3answers
317 views

Trying to combine nearby points into a polygon

We have collected millions of cell phone strength readings. I am trying to group points of the same strenght that are within a distance of each other in to a polygon. I asked on the postgis mailing ...
4
votes
2answers
530 views

is there a way to tell if two linestrings “really” intersect in JTS or GEOS

In JTS (or GEOS) you can't tell if two linestrings really cross each other. The result is exactly the same whether the lines simply have a point in common but don't cross or if they really cross. Is ...