NAME

Template::Plugin::GD::Graph::lines - Create line graphs with axes and legends

SYNOPSIS

    [% USE g = GD.Graph.lines(x_size, y_size); %]

EXAMPLES

    [% FILTER null;
        USE g = GD.Graph.lines(300,200);
        x = [1, 2, 3, 4];
        y = [5, 4, 2, 3];
        g.set(
                x_label => 'X Label',
                y_label => 'Y label',
                title => 'Title'
        );
        g.plot([x, y]).png | stdout(1);
       END;
    -%]

    [% FILTER null;
        data = [
            ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
                                         "Sep", "Oct", "Nov", "Dec", ],
            [-5, -4, -3, -3, -1,  0,  2,  1,  3,  4,  6,  7],
            [4,   3,  5,  6,  3,1.5, -1, -3, -4, -6, -7, -8],
            [1,   2,  2,  3,  4,  3,  1, -1,  0,  2,  3,  2],
        ];
        
        USE my_graph = GD.Graph.lines();

        my_graph.set(
                x_label => 'Month',
                y_label => 'Measure of success',
                title => 'A Simple Line Graph',

                y_max_value => 8,
                y_min_value => -8,
                y_tick_number => 16,
                y_label_skip => 2,
                box_axis => 0,
                line_width => 3,
                zero_axis_only => 1,
                x_label_position => 1,
                y_label_position => 1,

                x_label_skip => 3,
                x_tick_offset => 2,

                transparent => 0,
        );
        my_graph.set_legend("Us", "Them", "Others");
        my_graph.plot(data).png | stdout(1);
       END;
    -%]

DESCRIPTION

The GD.Graph.lines plugin provides an interface to the GD::Graph::lines class defined by the GD::Graph module. It allows one or more (x,y) data sets to be plotted as y versus x lines with axes and legends.

See GD::Graph for more details.

AUTHOR

Thomas Boutell wrote the GD graphics library.

Lincoln D. Stein wrote the Perl GD modules that interface to it.

Martien Verbruggen wrote the GD::Graph module.

Craig Barratt <craig@arraycomm.com> wrote the original GD plugins for the Template Toolkit (2001).

Andy Wardley <abw@cpan.org> extracted them from the TT core into a separate distribution for TT version 2.15.

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