0 Longitudes go from 0 to 360, latitudes from -90 to 90 [Default]. 1 Longitudes go from -180 to 180, latitudes from -90 to 90. 2 Longitudes are unsigned 0 to 180, latitudes unsigned 0 to 90. 3 Same as 2, but with letters W, E, S, or N appended as appropriate. 4 Same as 0, with decimal degrees instead of degrees, minutes, and seconds. 5 Same as 1, with decimal degrees instead of degrees, minutes, and seconds. Add 10 to these values to use the large degree symbol character (octal 217) [Default is the small degree symbol (octal 312)]. WGS-84 1984 World Geodetic System GRS-80 1980 International Geodetic Reference System WGS-72 1972 World Geodetic System WGS-66 1966 World Geodetic System Australian 1965 Used down under Krassovsky 1940 Used in the Soviet Union International 1924 Worldwide use Hayford-1909 1909 Same as the International 1924 Clarke-1880 1880 Most of Africa, France Clarke-1866 1866 North America, the Phillipines Airy 1830 Great Britain Bessel 1841 Central Europe, Chile, Indonesia Everest 1830 India, Burma, Pakistan, Afghanistan, Thailand, etc. Sphere 1980 The mean radius in GRS-80 (for spherical/plate tectonics applications) Note that for some global projections, GMT may default to GRS-80 Sphere regardless of ellipsoid actually chosen. A warning will be given when this happens. If a different ellipsoid name than those mentioned here is given, GMT will attempt to open this name as a file and read the ellipsoid name, year, major-axis (in m), minor-axis (in m), and flattening from the first record, where the fields must be separated by white-space (not commas). This way a custom ellipsoid (e.g., those used for other planets) may be used. Media width height A0 2380 3368 A1 1684 2380 A2 1190 1684 A3 842 1190 A4 595 842 A5 421 595 A6 297 421 A7 210 297 A8 148 210 A9 105 148 A10 74 105 B0 2836 4008 B1 2004 2836 B2 1418 2004 B3 1002 1418 B4 709 1002 B5 501 709 archA 648 864 archB 864 1296 archC 1296 1728 archD 1728 2592 archE 2592 3456 flsa 612 936 halfletter 396 612 note 540 720 letter 612 792 legal 612 1008 11x17 792 1224 ledger 1224 792 To force the printer to request a manual paper feed, append ’-’ to the media name, e.g., A3- will require the user to insert a A3 paper into the printer’s manual feed slot. To indicate you are making an EPS file, append ’+’ to the media name. Then, GMT will attempt to issue a tight bounding box [Default is the paper dimension]. You may now change the settings by editing this file using a text editor of your choice, or use gmtset to change specified parameters on the command line. Source.


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Last Modified: April 23, 2016 @ 4:10 am