1CPTCONT(1)                       User commands                      CPTCONT(1)
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NAME

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

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

13       The cptcont program converts a (possibly) discontinuous colour palette
14       in the input to a continuous palette in the output. This is achieved by
15       replacing the endpoints of segments at which a discontinuity occurs by
16       their mean colour.
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18       The program will read from stdin if a file is not specified as the
19       final argument, and write to stdout if the -o option is not specified.
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OPTIONS

22       --backtrace-file path
23           Specify a file to which to write a formatted backtrace. The file
24           will only be created if there is a backtrace created, typically
25           when an error occurs.
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27       --backtrace-format format
28           Specify the format of the backtrace written to the files specified
29           by --backtrace-file, one of plain, xml or json.
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31       -h, --help
32           Brief help.
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34       -m, --midpoint
35           Split each input segment into two output segments with the colour
36           at the common point being the colour of the original segment. This
37           gives a more faithful conversion of gradients with "corners", such
38           as diverging gradients, albeit at the cost of larger files.
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40       -o, --output file
41           Write the output to file, rather than stdout.
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43       -p, --partial percentage
44           The endpoints are moved the specified pecentage towards the mean
45           colour, so that a value of 100 (the default) moves the endpoints to
46           the mean colour, 50 moves them half-way there, and so on.
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48           Negative values and values greater than 100 are permitted.
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50       -v, --verbose
51           Verbose operation.
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53       -V, --version
54           Version information.
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EXAMPLE

57       Create an almost-continuous table:
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59           cptcont -v -p 66 -o new.cpt old.cpt
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AUTHOR

62       J. J. Green
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SEE ALSO

65       GMT(1).
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69CPTUTILS                       9 September 2020                     CPTCONT(1)
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