5.3. Example - Area Plot
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## 5.3. Example - Area Plot

In the area plot, PHPlot fills the area from each data set down to the next data set, or to the X axis for the last data set. For this example, the data was prepared such that the data sets are cumulative percentages. (See also Example 5.21, “Stacked Area Plot” which produces a similar plot using a different data representation.)

Example 5.3. Area Plot

    <?php
    # PHPlot Example: Area chart, 6 areas.
    require_once 'phplot.php';

    $data = array(
      array('1960', 100, 70, 60, 54, 16,  2),
      array('1970', 100, 80, 63, 54, 22, 20),
      array('1980', 100, 80, 66, 54, 27, 25),
      array('1990', 100, 95, 69, 54, 28, 10),
      array('2000', 100, 72, 72, 54, 38,  5),
    );

    $plot = new PHPlot(800, 600);
    $plot->SetImageBorderType('plain');

    $plot->SetPlotType('area');
    $plot->SetDataType('text-data');
    $plot->SetDataValues($data);

    # Main plot title:
    $plot->SetTitle('Candy Sales by Flavor');

    # Set Y data limits, tick increment, and titles:
    $plot->SetPlotAreaWorld(NULL, 0, NULL, 100);
    $plot->SetYTickIncrement(10);
    $plot->SetYTitle('% of Total');
    $plot->SetXTitle('Year');

    # Colors are significant to this data:
    $plot->SetDataColors(array('red', 'green', 'blue', 'yellow', 'cyan', 'magenta'));
    $plot->SetLegend(array('Cherry', 'Lime', 'Lemon', 'Banana', 'Apple', 'Berry'));

    # Turn off X tick labels and ticks because they don't apply here:
    $plot->SetXTickLabelPos('none');
    $plot->SetXTickPos('none');

    $plot->DrawGraph();

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5.2. Example - Line Plot: Functions | Home | 5.4. Example - Bar Chart