NAME

       Chart::Clicker::Tutorial - A Tutorial for using Chart::Clicker

VERSION

       version 2.90

DESCRIPTION

       This document aims to provide a tutorial for using Chart::Clicker.

EXAMPLES

   Simple chart from a single data source
           # grab the needed modules
           use Chart::Clicker;
           use Chart::Clicker::Data::Series;
           use Chart::Clicker::Data::DataSet;

           # build the chart
           my $chart = Chart::Clicker->new;

           # build the series (static here, will usually be supplied arrayrefs from elsewhere)
           my $series = Chart::Clicker::Data::Series->new(
               keys    =>      [ 1,2,3,4,5 ],
               values  =>      [ 52,74,52,82,14 ],
           );

           # build the dataset
           my $dataset = Chart::Clicker::Data::DataSet->new(
               series  =>      [ $series ],
           );

           # add the dataset to the chart
           $chart->add_to_datasets($dataset);

           # write the chart to a file
           $chart->write_output('chart.png');

   Simple chart from multiple data sources
           use Chart::Clicker;
           use Chart::Clicker::Data::Series;
           use Chart::Clicker::Data::DataSet;

           my $chart = Chart::Clicker->new;

           # start an array that will hold the series data
           my $series1 = Chart::Clicker::Data::Series->new(
               keys    =>      [ 1,2,3,4,5 ],
               values  =>      [ 52,74,52,82,14 ]
           );
           my $series2 = Chart::Clicker::Data::Series->new(
               keys    =>      [ 1,2,3,4,5 ],
               values  =>      [ 34,67,89,45,67 ]
           );

           # add the array of series data to the dataset
           my $dataset = Chart::Clicker::Data::DataSet->new(
               series  => [ $series1, $series2 ]
           );

           $chart->add_to_datasets($dataset);

           $chart->write_output('chart.png');

   Simple chart with multiple data sources and custom colors
           use Chart::Clicker;
           use Chart::Clicker::Data::Series;
           use Chart::Clicker::Data::DataSet;
           # some new modules, these are only needed if you want to monkey with color changing
           use Graphics::Color::RGB;
           use Chart::Clicker::Drawing::ColorAllocator;

           # build the color allocator
           my $ca = Chart::Clicker::Drawing::ColorAllocator->new;
           # this hash is simply here to make things readable and cleaner, you can always call G::C::R inline
           my $red = Graphics::Color::RGB->new({
               red => .75, green => 0, blue => 0, alpha => .8
           });
           my $green = Graphics::Color::RGB->new({
               red => 0,green => .75, blue=> 0, alpha=> .8
           });
           my $blue = Graphics::Color::RGB->new({
               red => 0, green => 0, blue => .75, alpha => .8
           }),

           my $chart = Chart::Clicker->new;

           # Create an empty dataset that we can add to
           my $dataset = Chart::Clicker::Data::DataSet->new;

           $dataset->add_to_series(Chart::Clicker::Data::Series->new(
               keys    => [ 1,2,3,4,5 ],
               values  => [ 52,74,52,82,14 ]
           ));
           # add a color - note that the order of colors and the order of the
           # series must match, the first series will use the first color and so on
           # see contexts and axes for alternate ways of doing this
           $ca->add_to_colors($blue);

           $dataset->add_to_series(Chart::Clicker::Data::Series->new(
               keys    =>  [ 1,2,3,4,5 ],
               values   =>  [ 34,67,89,45,67 ]
           ));
           # add a second color
           $ca->add_to_colors($red);

           $dataset->add_to_series(Chart::Clicker::Data::Series->new(
               keys    =>  [ 1,2,3,4,5 ],
               values  =>  [ 11,22,33,44,55 ]
           ));
           # add a third color
           $ca->add_to_colors($green);

           $chart->add_to_datasets($dataset);

           # assign the color allocator to the chart
           $chart->color_allocator($ca);

           $chart->write_output('chart.png');

   Example 4 : Simple chart with a different render type
           use Chart::Clicker;
           use Chart::Clicker::Data::Series;
           use Chart::Clicker::Data::DataSet;
           # add in the module of the renerer(s) you want to use
           use Chart::Clicker::Renderer::Area;

           my $chart = Chart::Clicker->new;

           my $series = Chart::Clicker::Data::Series->new(
               keys    => [ 1,2,3,4,5 ],
               values  => [ 52,74,52,82,14 ]
           );

           my $dataset = Chart::Clicker::Data::DataSet->new(
               series  => [ $series ]
           );

           $chart->add_to_datasets($dataset);

           # build the renderer to use
           my $renderer = Chart::Clicker::Renderer::Area->new(
               opacity => .75,
           );

           # assign the renderer to the default context
           $chart->set_renderer($renderer);

           $chart->write_output('chart.png');

   Example 5 : Width and Height
         my $chart = Chart::Clicker->new(width => 1024, height => 768);

   Example 6 : PDF (or SVG or PS)
         my $chart = Chart::Clicker->new(format => 'pdf');

         # Create the rest of your chart normally

         $chart->write_output('chart.pdf');

   Example 7 : Hide the Legend and X-Axis
         my $chart = Chart::Clicker->new;

         # hide the legend
         $chart->legend->visible(0);

         # hide the X-Axis
         $chart->get_context('default')->domain_axis->hidden(1);

   Example 8 : Change the display format of the Y-Axis
         my $chart = Chart::Clicker->new;

         # a sprintf format to have 3 decimal places showing on the Y-Axis
         $chart->get_context('default')->range_axis->format('%.3f');

DISCLAIMER

       This is a work in progress. If you find errors or would like to make contributions, drop
       me a line!

AUTHOR

       Cory G Watson <gphat@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2016 by Cory G Watson.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.