quantumpax.blogg.se - Grid map maker

EOS: Transactions of the American Geophysical Union. "New version of the generic mapping tools released".

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An example of a map created with GMT, illustrating the empire of Alexander the Great References GMT is most widely used by Earth and Ocean scientists. Besides its strong support for the visualization of geographic data sets, the software includes tools for processing and manipulating multi-dimensional datasets. The letters GMT originally stood for Gravity, Magnetism and Topography, the three basic types of geophysical data. Smith created GMT in 1988 at Lamont–Doherty Earth Observatory, officially releasing it on Octounder the GNU General Public License.

More or less comprehensive graphic user interfaces are available from third parties, as well as web applications, bringing the system's functionality online. Users operate the system from the command line: this enables scripting and the automation of routine tasks. GMT stores the resulting maps and diagrams in PostScript (PS) or Encapsulated PostScript (EPS) format.

Users convert further data (like satellite imagery and digital elevation models) from other sources and import them. The software stores 2-D grids as COARDS-compliant netCDF files and comes with a comprehensive collection of free GIS data, such as coast lines, rivers, political borders and coordinates of other geographic objects. Generic Mapping Tools ( GMT) are an open-source collection of computer software tools for processing and displaying xy and xyz datasets, including rasterization, filtering and other image processing operations, and various kinds of map projections.