MAKECPT(l)																MAKECPT(l)

NAME

       makecpt - Make GMT color palette tables

SYNOPSIS

       makecpt [ -Ctable ] [ -I ] [ -Tz0/z1/dz | -Tztable] [ -V ] [ -Z ]

DESCRIPTION

       makecpt	is  a utility that will help you make color palette tables (cpt files). You define an equidistant set of contour intervals or pass
       your own z-table, and create a new cpt file based on an existing master cpt file. The resulting cpt file can be reversed  relative  to  the
       master cpt, and can be made continuous or discrete.

OPTIONS

       -C     Selects  the  master color table table to use in the interpolation.  Choose among the built-in tables (type makecpt to see the list)
	      or give the name of an existing cptfile [Default gives a rainbow cpt file].

       -I     Reverses the sense of color progression in the master cptfile.

       -T     Defines the range of the new cptfile by giving the lowest and highest z-value and the interval. Alternatively, give the  name  of  a
	      ASCII file that has one z-value per record. If not given, the existing range in the master cptfile will be used intact.

       -V     Selects verbose mode, which will send progress reports to stderr [Default runs "silently"].

       -Z     Creates a continuous cpt file [Default is discontinuous, i.e. constant colors for each interval].

EXAMPLES

       To make a cpt file with z-values from -200 to 200, with discrete color changes every 25, and using a polar blue-white-red colortable, try

       makecpt -Cpolar -T-200/200/25 > colors.cpt

       To make an equidistant cpt file from z = -2 to 6, in steps of 1, using continuous default rainbow colors, try

       makecpt -T-2/6/1 -Z > rainbow.cpt

       To make a GEBCO look-alike cpt file for bathymetry, try

       makecpt -Cgebco > my_gebco.cpt

BUGS

       Since  makecpt will also interpolate from any existing .cpt file you may have in your directory, you cannot use one of the listed cpt names
       as an output filename; hence the my_gebco.cpt in the example.

SEE ALSO

       gmt(1gmt), grd2cpt(1gmt)

								    1 Jan 2004								MAKECPT(l)