GMT: GMT (Generic Mapping Tools) GMT: GMT: GMT is an open source collection of command-line tools for GMT: manipulaing geographic and Cartesian data sets (including GMT: filtering, trend fitting, gridding, projecting, etc.) and GMT: producing PostScript illustrations ranging from simple x-y GMT: plots via contour maps to artificially illuminated surfaces GMT: and 3D perspective views. GMT: GMT: Homepage: https://www.generic-mapping-tools.org/ GMT: