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NAMEGD::Graph::colour - Colour manipulation routines for use with GD::Graph
SYNOPSISuse GD::Graph::colour qw(:colours :lists :files :convert);
DESCRIPTIONThe GD::Graph::colour package provides a few routines to work with colours. The functionality of this package is mainly defined by what is needed, now and historically, by the GD::Graph modules.
colour_list( number of colours )Returns a list of number of colours colour names known to the package. Exported with the :lists tag.
sorted_colour_list( number of colours )Returns a list of number of colours colour names known to the package, sorted by luminance or hue.
_rgb( colour name )Returns a list of the
_hue( R,G,B )Returns the hue of the colour with the specified
_luminance( R,G,B )Returns the luminance of the colour with the specified
add_colour(colourname => [$r, $g, $b]) or add_colour('#7fe310')Self-explanatory. Exported with the :colours tag.
rgb2hex($red, $green, $blue)
hex2rgb('#7fe310')These functions translate a list of
read_rgb( file name )Reads in colours from a rgb file as used by the X11 system.
Doing something like:
use GD::Graph::bars; use GD::Graph::colour; GD::Graph::colour::read_rgb("rgb.txt") or die "cannot read colours";
Will allow you to use any colours defined in rgb.txt in your graph. Exported with the :files tag.
PREDEFINED COLOUR NAMESwhite, lgray, gray, dgray, black, lblue, blue, dblue, gold, lyellow, yellow, dyellow, lgreen, green, dgreen, lred, red, dred, lpurple, purple, dpurple, lorange, orange, pink, dpink, marine, cyan, lbrown, dbrown.
AUTHORMartien Verbruggen <firstname.lastname@example.org>
CopyrightGIFgraph: Copyright (c) 1995-1999 Martien Verbruggen. Chart::PNGgraph: Copyright (c) 1999 Steve Bonds. GD::Graph: Copyright (c) 1999 Martien Verbruggen.
All rights reserved. This package is free software; you can redistribute it and/or modify it under the same terms as Perl itself.