j.j. green | cptsvg(1)

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Name

cptsvg — convert GMT colour palette tables (cpt) to SVG gradients.

cptsvg [-g geometry] [-h ] [-o file] [-p ] [-v ] [-V ] [file]

The cptsvg utility converts the colour palette table (cpt) files used by GMT(1) to the gradients in the Scalar Vector Graphics (SVG) format.

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.

The output is formatted for machines to read, rather than humans. A post-processor such as tidy(1) could be used in the latter case.

--backtrace-file path: 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-format format: Specify the format of the backtrace written to the files specified by --backtrace-file, one of plain, xml or json.
-g, --geometry widthxheight: Specify the size of the SVG preview in pixels.
-h, --help: Brief help.
-o, --output file: Write the output to file, rather than stdout.
-p, --preview: Include a preview in the SVG output. See also the --geometry option.
-v, --verbose: Verbose operation.
-V, --version: Version information.

Create a machine-readable SVG file:

cptsvg -v -o new.svg old.cpt

Create a human-readable SVG file with a preview:

cptsvg -p old.cpt | tidy -xml -indent -o new.svg

J. J. Green