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Name
cptupdate — create a GMT colour palette table (cpt) file with a different version to the input.
DESCRIPTION
The cptupdate program updates the colour palette in the input to more recent (or older) version, optionally adding/removing features to the input.
The program reads any version of the format, so can also be used to add hinges or normalise/denormalise version 6 input, or even convert to versions 5 or 4.
The program will read from stdin if a file is not specified as
the final argument, and write to stdout if the --output option is not specified.
OPTIONS
--backtrace-filepath-
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.
--backtrace-formatformat-
Specify the
formatof the backtrace written to the files specified by--backtrace-file, one ofplain,xmlorjson. -h,--help-
Brief help.
-H,--hinge-hard-
Adds a
HARD_HINGEto the ouput provided the output version is at least 6. -o,--outputpath-
Write the output to
path, rather thanstdout. -S,--hinge-soft-
Adds a
SOFT_HINGEto the ouput provided the output version is at least 6. -v,--verbose-
Verbose operation.
-V,--version-
Version information.
-z,--z-normalise-
Normalise the z-values in the cpt output into the range 0/1 (or to -1/1 if a hinge is present) and add a
RANGEdirective if not present in the input. This is the form used in GMT master files.This option requires that output cpt version is at least 5.
-Z,--z-denormalise-
Set the z-values in the cpt output into the range given by the
RANGEdirective, and remove that directive. If there is noRANGEthen this option does nothing. -4,--gmt4-
Use GMT 4 conventions when writing the cpt output: the colour-model code is uppercase, and the colours are separated by spaces.
This option allows one to downgrade to version 4. If the input is normalised it will be denormalised, if the input has hinges, those will be removed.
-5,--gmt5-
Use GMT 5 conventions when writing the cpt output: the colour-model code is lowercase, and the colours are separated by a solidus for RGB, CMYK, by a dash for HSV.
This option allows one to downgrade from version 6 (in which case hard/soft hinges will be converted to explicit hinges at zero) or upgrade from version 4.
-6,--gmt6-
As the
-5option, but allows theHARD_HINGEandSOFT_HINGEdirectives in place of the explicitHINGE =directive.This option is the default, so redundant (but one might wish to fix version 6 in anticipation later versions of the format).