NAME

Color::Brewer - Color schemes from Cynthis Brewer's ColorBrewer http://colorbrewer2.org/

SYNOPSYS

        use Color::Brewer;

        my @color_scheme = Color::Brewer::named_color_scheme(name => 'RdBu', number_of_data_classes => 4);
        my @color_schemes = Color::Brewer::color_schemes(data_nature => 'sequential', number_of_data_classes => 5);

DESCRIPTION

Provides color schemes for maps designed by Cynthia Brewer. The color schemes are also suitable for data visualizations.

Choosing the best color scheme is easy. Just visit Cynthia Brewer's ColorBrewer http://colorbrewer2.org.

Also adding a citation in your map, chart, ... would be nice. Something like:

    Colors from colorbrewer2.org, by Cynthia A. Brewer, Geography, Pennsylvania State University

This is suggested in http://www.personal.psu.edu/cab38/ColorBrewer/ColorBrewer_updates.html

METHODS

named_color_scheme

Get a named color scheme

Parameters

• name:

  Name of the color scheme: RdBu

• number_of_data_classes:

  Number of data classes. Valid range goes from 3 to 12 depending on the scheme.

Returns

Array with the color scheme or an empty list if there is no such scheme

color_schemes

Get the color schemes available

Parameters

• data_nature:

  Nature of the data: qualitative, sequential or diverging

• number_of_data_classes:

  Number of data classes. Valid range goes from 3 to 12 depending on the scheme.

Returns

Array with all the color schemes matching the options. Every color scheme is an array which elements are html rgb colors like: "rgb(252,141,89)"

Array can be empty if none of the color schemes match the options.

CREDIT

Color Brewer website and color schemes are copyrighted by Cynthia Brewer. With this module is bundled a json file with the color schemes.

This product includes color specifications and designs developed by Cynthia Brewer (http://colorbrewer2.org/).

        Apache-Style Software License for ColorBrewer software and ColorBrewer Color Schemes

        Copyright (c) 2002 Cynthia Brewer, Mark Harrower, and The Pennsylvania State University.

        Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
        You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

        Unless required by applicable law or agreed to in writing, software distributed
        under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
        CONDITIONS OF ANY KIND, either express or implied. See the License for the
        specific language governing permissions and limitations under the License.

SEE ALSO

Color::Scheme Perl implementation of Color Schemes 2

Color::Palette Set of named colors

Color::Library Named-color library

Graphics::Color Simple creation and manipulation of colors

Graphics::ColorObject Conversion between color spaces

AUTHOR

Pablo Rodríguez González

LICENSE

This work is licensed under the Apache License, Version 2.0.

cpanm Color::Brewer

perl -MCPAN -e shell
install Color::Brewer