Colours are the deeds of light; its deeds and sufferings: thus considered we may expect from them some explanation respecting light itself.
The gplcpt program converts GIMP(1) colour palette (gpl) files to the GMT(1) colour palette table (cpt) format. The output is a piecewise constant (step or discrete) gradient. One could use cptcont(1) program to convert the output to a continuous cpt file if so desired.
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.
In the following, all
rgb specifications should be
of the form
blue where the
colour components are integers in the range 0 to 255.
Set the background colour of the output.
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
Set the foreground colour of the output.
Set the NaN (no data) colour of the output.
Write the output to
file, rather than