# $Id: grdraster.info,v 1.1.1.1 2000/12/28 01:23:45 gmt Exp $ # # This file contains information on rasterfiles which are readable with grdraster. # This file must be named $(GMT_GRIDDIR)/grdraster.info where GMT_GRIDDIR is an # environmental variable [$GMTHOME/share/dbase]. This file is read by grdraster at # run time. Any line beginning with a # will be treated as a comment, and blank # lines are skipped. Any other line must have the following items, all on one # line, one line per rasterfile: # # file_number "title string" "z units" -R -I GorP type scale offset NaNflag filename [S] # # There must be white space between each item. "title string" and "z units" must # be enclosed in " ", and they may have white space within them. They are limited # to a maximum of 80 characters. No other quotation marks should be on a line. # The entire line should be writable in 320 characters. # # file_number is an integer used to tell grdraster which raster to read. It must # be unique to each raster. # "title string" is a brief description of the data. # "z units" describes the units of the data after they are scaled and offset. # -R/// describes the range of the raster in the usual GMT -R manner. # -I/ describes the sampling interval in the usual GMT -I manner. # GorP is either G or P, indicating Grid or Pixel registration. # type is one of the following, indicating the kind of data stored in the raster: # b bit data, either 0 or 1, one bit per data value. # u unsigned character data. # c signed character data. # d unsigned two-byte integer data. # i signed two-byte integer data. # scale is a number which should be multiplied on the raster value after read. # offset is a number which should be added to the [scaled] raster value. # NaNflag is a number which is written in the raster to represent NaN. # If all values in the raster represent data, NaNflag is none. # filename is the name the raster file. If filename begins with a "/", then # it will be treated as a complete name. If not, the complete name will # be formed as $(GMT_GRIDDIR)/filename. # # BYTE-ORDER: # # Optionally, you may append a single character L (for Little-endian) or B (for # Big-endian) to indicate the endian-ness of this data file. If the present # endianness of your computer has a different endianness that specified for the # chosen data set, then grdraster will automatically swap the bytes. The # endianness of your computer is automatically determined at compile-time. # # You will need to edit this to reflect which data you have installed on your # system, and optionally append L or B to indicate endian-ness: # 1 "ETOPO5 global topography" "m" -R0/359:55/-90/90 -I5m G i 1 0 none etopo5.i2 2 "US Elevations from USGS" "m" -R234/294/24/50 -I0.5m P i 0.3048 0 -9999 us_topo30s.i2 3 "Geosat/Seasat gravity from Haxby" "mGal" -R0/360/-90/90 -I5m G i 0.1 0 none haxby5m_faa.i2 4 "Geosat/Seasat geoid from Haxby" "m" -R0/360/-90/90 -I5m G i 0.001 0 none haxby5m_geoid.i2 5 "Sea floor age from Cande" "Ma" -R0/360/-90/90 -I5m P i 0.1 0 -30000 cande5m_ages.i2 6 "Sea floor age from Muller" "Ma" -R0/360/-72/72 -I6m G i 0.01 0 32767 scripps6m_ages.i2 7 "1=land, 0=sea bitmask" "T/F" -R0/360/-90/90 -I5m P b 1 0 none landsea.bits 8 "Seasat geoid from J. Marsh" "m" -R0/359.875/-60/70 -I0.125 G i 0.01 0 32765 marsh.geo 9 "Geosat gravity from Marks" "mGal" -R0/360/-72/-30 -I0.05/0.04 G i 0.01 0 32767 geosat30.bin 10 "Seasat gravity from Haxby" "mGal" -R0:05/360/-71:55/72 -I5m G i 0.1 0 none haxby.bin 11 "ETOPO5 global topography" "m" -R0/359:55/-90/90 -I5m G i 1 0 none etopo5.dat B 12 "SRTM topography level 3" "m" -R-73/-72/18/19 -I3c G i 1 0 -32768 N18W073.hgt B 13 "SRTM topography level 3" "m" -R-72/-71/18/19 -I3c G i 1 0 -32768 N18W072.hgt B 14 "SRTM level 3 Alger " "m" -R3/4/36/37 -I3c G i 1 0 -32768 N36E003.hgt B 15 "GTOPO30 WEST US SOUTH" "m" -R-140/-100/-10/40 -I0.5m P i 1 0 -9999 W140N40.DEM B 16 "GTOPO30 WEST EUROPE" "m" -R-20/20/40/90 -I0.5m P i 1 0 -9999 W020N90.DEM B 17 "GTOPO30 NE AFRICA" "m" -R20/60/-10/40 -I0.5m P i 1 0 -9999 /home/calais/Junk/E020N40.DEM B 18 "GTOPO30 SE AFRICA" "m" -R20/60/-60/-10 -I0.5m P i 1 0 -9999 /home/calais/Junk/E020S10.DEM B 19 "GTOPO30 SW AFRICA" "m" -R-20/20/-60/-10 -I0.5m P i 1 0 -9999 /home/calais/Junk/W020S10.DEM B 20 "GTOPO30 NW AFRICA" "m" -R-20/20/-10/40 -I0.5m P i 1 0 -9999 /home/calais/Junk/W020N40.DEM B 21 "GTOPO30 SW ASIA" "m" -R60/100/-10/40 -I0.5m P i 1 0 -9999 E060N40.DEM B 22 "GTOPO30 NW ASIA" "m" -R60/100/40/90 -I0.5m P i 1 0 -9999 E060N90.DEM B 23 "GTOPO30 SE ASIA" "m" -R100/140/-10/40 -I0.5m P i 1 0 -9999 E100N40.DEM B 24 "GTOPO30 NE ASIA" "m" -R100/140/40/90 -I0.5m P i 1 0 -9999 E100N90.DEM B 25 "srtm LEVEL 3 Ethiopia " "M" -R38/39/7/8 -I3c G i 1 0 -32768 N07E038.hgt B 26 "srtm LEVEL 3 Ethiopia " "M" -R38/39/8/9 -I3c G i 1 0 -32768 N08E039.hgt B 27 "srtm LEVEL 3 Ethiopia " "M" -R39/40/7/8 -I3c G i 1 0 -32768 N07E039.hgt B 28 "srtm LEVEL 3 Ethiopia " "M" -R39/40/8/9 -I3c G i 1 0 -32768 N08E039.hgt B