I have a bunch of GPX files and I want to find out which files contain tracks located in certain geographic extent, e.g. files containing tracks in Pennsylvania. Also, the inverse is also useful too, ...
I was wondering if anyone could help me out with a website which I can use to get geometries for a area. What I'm looking for is something like google maps where I can drag a cursor over a area of the ...
How can I calculate the length and with of polygons using open source tools? By "polygon length" I mean the length of the longest line within the polygon (update: to be correct, I just need the ...