网格文件id
By default, grids will be written as floating point data stored in binary files using the netCDF format and meta-data structure. This format is conform the COARDS conventions. GMT versions prior to 4.1 produced netCDF files that did not conform to these conventions. Although these files are still supported, their use is deprecated. To write other than floating point COARDS-compliant netCDF files, append the =id suffix to the filename outgrdfile.When reading files, grdreformat and other GMT programs will automatically recognize any type of netCDF grid file. These can be in either COARDS-compliant or pre-4.1 format, and contain floating-point or integer data. To read other types of grid files, append the =id suffix to the filename ingrdfile.
idGMT 3 netCDF legacy formats
cbGMT netCDF format (byte) (deprecated)
csGMT netCDF format (short) (deprecated)
ciGMT netCDF format (int) (deprecated)
cfGMT netCDF format (float) (deprecated)
cdGMT netCDF format (double) (deprecated)
idGMT native binary formats
bmGMT native, C-binary format (bit-mask)
bbGMT native, C-binary format (byte)
bsGMT native, C-binary format (short)
biGMT native, C-binary format (int)
bfGMT native, C-binary format (float)
bdGMT native, C-binary format (double)
idGMT 4 netCDF standard
nbGMT netCDF format (byte) (COARDS-compliant)
nsGMT netCDF format (short) (COARDS-compliant)
niGMT netCDF format (int) (COARDS-compliant)
nfGMT netCDF format (float) (COARDS-compliant)
ndGMT netCDF format (double) (COARDS-compliant)
idMisc formats
rbSUN rasterfile format (8-bit standard)
rfGEODAS grid format GRD98 (NGDC)
sfGolden Software Surfer format 6 (float)
sdGolden Software Surfer format 7 (double, read-only)
afAtlantic Geoscience Center format AGC (float)
gdImport through GDAL (convert to float) -- NON-STANDARD
页:
[1]