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GD::Graph::colour 1.44

  Date Added: October 25, 2010  |  Visits: 814

GD::Graph::colour

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GD::Graph::colour contains colour manipulation routines for use with GD::Graph. SYNOPSIS use GD::Graph::colour qw(:colours :lists :files :convert); The 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. FUNCTIONS 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. NB. Right now it always sorts by luminance. Will add an option in a later stage to decide sorting method at run time. Exported with the :lists tag. _rgb( colour name ) Returns a list of the RGB values of colour name. if the colour name is a string of the form that is acceptable to the hex2rgb sub, then the colour will be added to the list dynamically. Exported with the :colours tag. _hue( R,G,B ) Returns the hue of the colour with the specified RGB values. Exported with the :colours tag. _luminance( R,G,B ) Returns the luminance of the colour with the specified RGB values. Exported with the :colours tag. 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 RGB values into a hexadecimal string, as is commonly used in HTML and the Image::Magick API, and vice versa. Exported with the :convert tag. 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..

Requirements: No special requirements
Platforms: Linux
Keyword: Colour Colours Exported Gd Gdgraphcolour Libraries List List Of Programming Returns Rgb Values Tag
Users rating: 0/10

License: Freeware Size: 153.6 KB
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