cptcont (1) - Linux Manuals

cptcont: create a continuous GMT colour palette table (cpt) file based on the colours of a non-continuous cpt file.

Command to display cptcont manual in Linux: $ man 1 cptcont

NAME

cptcont - create a continuous GMT colour palette table (cpt) file based on the colours of a non-continuous cpt file.

SYNOPSIS

cptcont [-h] [-m] [-o file] [-p percent] [-v] [-V] [file]

DESCRIPTION

The cptcont program converts a (possibly) discontinuous colour palette in the input to a continuous palette in the output. This is achieved by replacing the endpoints of segments at which a discontinuity occurs by their mean colour.

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.

OPTIONS

-h, --help

: Brief help.

-m, --midpoint

: Split each input segment into two output segments with the colour at the common point being the colour of the original segment. This gives a more faithful conversion of gradients with "corners", such as diverging gradients, albeit at the cost of larger files.

-o, --output file

: Write the output to file, rather than stdout.

-p, --partial percentage

: The endpoints are moved the specified pecentage towards the mean colour, so that a value of 100 (the default) moves the endpoints to the mean colour, 50 moves them half-way there, and so on.
Negative values and values greater than 100 are permitted.

-v, --verbose

: Verbose operation.

-V, --version

: Version information.

EXAMPLE

Create an almost-continuous table:

  cptcont -v -p 66 -o new.cpt old.cpt

AUTHOR

J.J. Green