A Shapefile is a GIS file in which vectors like points, lines, and polygons are used to represent geo locations like rivers, lakes, country boundaries, well, and more. Each of its elements or items ...

Part of an ongoing series of on open-source geographic information system (GIS) programs, this article offers an introduction to uDig GIS. uDig is for GIS users of all levels, from beginners to ...

We have been working on some code to determine whether or not a placemark lies inside or outside a polygon. We thought a nice use for that code would be to determine what country a placemark is in.