1AVLCPT(1)                        User commands                       AVLCPT(1)
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NAME

6       avlcpt - convert ArcView® Legend gradients to GMT colour palette tables
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SYNOPSIS

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

13       The avlcpt utility will extract a gradient from an ArcView Legend (avl)
14       file and write it to the GMT (Generic Mapping Tools) cpt format. Note
15       that not every avl file will contain a gradient, some just have
16       patterns.
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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       In the following, all rgb specifications should be of the form
23       red/green/blue where the colour components are integers in the range 0
24       to 255.
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26       -b, --background rgb
27           Set the background colour of the output.
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29       --backtrace-file path
30           Specify a file to which to write a formatted backtrace. The file
31           will only be created if there is a backtrace created, typically
32           when an error occurs.
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34       --backtrace-format format
35           Specify the format of the backtrace written to the files specified
36           by --backtrace-file, one of plain, xml or json.
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38       -f, --foreground rgb
39           Set the foreground colour of the output.
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41       -h, --help
42           Brief help.
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44       -l, --lower adjust
45           Decrease the lower limit on each segment by the specified amount.
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47       -n, --nan rgb
48           Set the NaN (no data) colour of the output.
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50       -o, --output file
51           Write the output to file, rather than stdout.
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53       -p, --precision precision
54           Specify rounding. ArcView legends have a rather interesting
55           approach to height specification whereby colour ranges might be
56           0-49, 50-99, and so on. The cpt format requires that the end of one
57           segment be at the same as the start of the next, so some rounding
58           of the input will usually be required. The precision is specified
59           directly rather than by number of digits, so that -p10 will round
60           to the nearest 10 and so on.
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62       -u, --upper adjust
63           Increase the upper limit on each segment by the specified amount.
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65       -v, --verbose
66           Verbose operation.
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68       -V, --version
69           Version information.
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NOTES

72       ArcView® is a trademark of Environmental Systems Research Institute,
73       Inc.
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AUTHOR

76       J. J. Green
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SEE ALSO

79       GMT(1).
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83CPTUTILS                         7 August 2019                       AVLCPT(1)
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