Colours are the deeds of light; its deeds and sufferings: thus considered we may expect from them some explanation respecting light itself.
The cptcat utility concatenates two or more
GMT colour palette table (cpt) files. The mandatory
file arguments specify the input files which may be specified
in any order. However, when sorted, the maximum (z-value) of the lower file should equal the
minimum of the upper file; files can be modified with the makecpt(1) utility to be in this
The background colour will be taken from that of the lower (or lowest) file, and the forground from that of the upper.
The program will write to stdout if the
-o option is not
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.
formatof the backtrace written to the files specified by
--backtrace-file, one of
Write the output to
file, rather than
Create a cpt-file topobath.cpt from topo.cpt and bath.cpt
cptcat -v -o topobath.cpt topo.cpt bath.cpt