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AVLCPT(1)			 User commands			     AVLCPT(1)

NAME
       avlcpt -	convert	ArcView(R) Legend gradients to GMT colour palette
       tables

SYNOPSIS
       avlcpt [-b rgb] [-f rgb]	[-h] [-l adjust] [-n rgb] [-o file]
	      [-p precision] [-u adjust] [-v] [-V] [file]

DESCRIPTION
       The avlcpt utility will extract a gradient from an ArcView Legend (avl)
       file and	write it to the	GMT (Generic Mapping Tools) cpt	format.	Note
       that not	every avl file will contain a gradient,	some just have
       patterns.

       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
       In the following, all rgb specifications	should be of the form
       red/green/blue where the	colour components are integers in the range 0
       to 255.

       -b, --background	rgb
	   Set the background colour of	the output.

       --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.

       -f, --foreground	rgb
	   Set the foreground colour of	the output.

       -h, --help
	   Brief help.

       -l, --lower adjust
	   Decrease the	lower limit on each segment by the specified amount.

       -n, --nan rgb
	   Set the NaN (no data) colour	of the output.

       -o, --output file
	   Write the output to file, rather than stdout.

       -p, --precision precision
	   Specify rounding. ArcView legends have a rather interesting
	   approach to height specification whereby colour ranges might	be
	   0-49, 50-99,	and so on. The cpt format requires that	the end	of one
	   segment be at the same as the start of the next, so some rounding
	   of the input	will usually be	required. The precision	is specified
	   directly rather than	by number of digits, so	that -p10 will round
	   to the nearest 10 and so on.

       -u, --upper adjust
	   Increase the	upper limit on each segment by the specified amount.

       -v, --verbose
	   Verbose operation.

       -V, --version
	   Version information.

NOTES
       ArcView(R) is a trademark of Environmental Systems Research Institute,
       Inc.

AUTHOR
       J.J. Green

SEE ALSO
       GMT(1).

CPTUTILS			  22 Feb 2017			     AVLCPT(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | AUTHOR | SEE ALSO

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