Colours are the deeds of light; its deeds and sufferings: thus considered we may expect from them some explanation respecting light itself.
rgb] [-h ] [-l
adjust] [-v ] [-V ] [
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.
In the following, all
rgb specifications should be
of the form
blue where the
colour components are integers in the range 0 to 255.
Set the background colour of the output.
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.
formatof the backtrace written to the files specified by
--backtrace-file, one of
Set the foreground colour of the output.
Decrease the lower limit on each segment by the specified amount.
Set the NaN (no data) colour of the output.
Write the output to
file, rather than
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
-p10will round to the nearest 10 and so on.
Increase the upper limit on each segment by the specified amount.