Featured GIS Shapefile Map Layers - for Beginners & Experienced GIS Users Alike. Zip Code Boundaries, School Districts, Indian & Federal Lands, Climate Change, Tornadoes, Dams - Create digital GIS maps in minutes ... more
Reimagination - Reimagining, exploring and celebrating the changes in infrastructure, politics and culture that will help us live in harmony with each other and the earth now and in the future.
Note: We have another program listed, iGMT. It provides a graphical interface to GMT, making it much easier to use. Check out iGMT.
Generic Mapping Tools - GMT is an open source collection of ~60 tools for manipulating geographic and Cartesian data sets (including filtering, trend fitting, gridding, projecting, etc.) and producing Encapsulated PostScript File (EPS) illustrations ranging from simple x-y plots via contour maps to artificially illuminated surfaces and 3-D perspective views. GMT supports ~30 map projections and transformations and comes with support data such as GSHHS coastlines, rivers, and political boundaries.
GMT is developed and maintained by Paul Wessel and Walter H. F. Smith with help from a global set of volunteers, and is supported by the National Science Foundation. It is released under the GNU General Public License.
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