I am looking for border polygons from World War I (from 1914-1918). Is there a resource out there that maintains this kind of information? Any help would be greatly appreciated!!
I have a bunch of Landsat 5 scenes that I want to mosaic together. However Landsat 5 scenes have a zigzag pattern on the left and right edges as well as some bad data values along these edges. Is ...
I have a shapefile that contains several polygons which in fact represent the limits of several counties. My task is to find each length of each shared border. So in other words I want to know how ...