cptpg man page

cptpg — convert GMT colour palette tables (cpt) to PostGIS colour-maps.


cptpg [-h] [-o file] [-p] [-v] [-V] [file]


The cptpg utility converts the colour palette table (cpt) files used by GMT(1) to the colour-maps used by PostGIS, in particular those for the ST_ColorMap function. It should also be possible to use the maps in the GDAL program gdaldem, the GRASS r.colors utility and in ESRI products which call for a HDR color table.

The program will read from stdin if a file is not specified as the final argument, and write to stdout if the -o option is not specified.


--backtrace-file path
Specify a file to which to write a formatted backtrace. The file will only be created if there is a backtrace created, typically when an error occurs.
--backtrace-format format
Specify the format of the backtrace written to the files specified by --backtrace-file, one of plain, xml or json.
-h, --help
Brief help.
-o, --output file
Write the output to file, rather than stdout.
-p, --percentage
Convert (z) values to percentages.
-v, --verbose
Verbose operation.
-V, --version
Version information.


J.J. Green

See Also



CPTUTILS 2 Aug 2016