I have three layers I need to try match up at the borders. This is not a projection problem, all layers are projected to Albers NAD83. The base layer (Green) is 30m DEM, with a US boundaries layer on ...
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 ...
Possible Duplicate: Is there a source for historical shapefiles and tiles? Does anyone know of a good source for historic country borders, in a GIS file format, like shapefiles? I've been ...