Keywords: Carr7885.png Carriacou Island locater map Created using PD and GFDL sources US Government datasets GMT software and GIMP in Linux 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 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 data from the US national data centers NOAA USGS NGDC NEIC can be used with GMT and they are all freely available from these centers and individuals via the internet http //gmt soest hawaii edu/ en wikipedia 2002-10-14 Caltrop wikipedia en GFDL relicense Caltrop original upload log page en wikipedia Carr7885 png 2002-10-14 01 28 Caltrop 514×524×4 10328 bytes <nowiki>Carriacou Island locater map</nowiki> Locator maps of Grenada Carriacou and Petite Martinique |