5.6. Example - Bar Chart, Label Options
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## 5.6. Example - Bar Chart, Label Options

This is a bar chart showing data per year. Because the Y values are so large, we enable numeric formatting of Y tick labels, with precision 0. This results in a comma separator between thousands. This example also shows how to force the Y tick marks to start at zero and use a nice whole number for the tick interval.

Example 5.6. Bar Chart - Label Options

    <?php
    # PHPlot Example: Bar chart, annual data
    require_once 'phplot.php';

    $data = array(
      array('1985', 340),    array('1986', 682),    array('1987', 1231),
      array('1988', 2069),   array('1989', 3509),   array('1990', 5283),
      array('1991', 7557),   array('1992', 11033),  array('1993', 16009),
      array('1994', 24134),  array('1995', 33768),  array('1996', 44043),
      array('1997', 55312),  array('1998', 69209),  array('1999', 86047),
      array('2000', 109478), array('2001', 128375), array('2002', 140767),
    );

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

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

    # Let's use a new color for these bars:
    $plot->SetDataColors('magenta');

    # Force bottom to Y=0 and set reasonable tick interval:
    $plot->SetPlotAreaWorld(NULL, 0, NULL, NULL);
    $plot->SetYTickIncrement(10000);
    # Format the Y tick labels as numerics to get thousands separators:
    $plot->SetYLabelType('data');
    $plot->SetPrecisionY(0);

    # Main plot title:
    $plot->SetTitle('US Cell Phone Subscribership');
    # Y Axis title:
    $plot->SetYTitle('Thousands of Subscribers');

    # 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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5.5. Example - Unshaded Bar Chart | Home | 5.7. Example - Line/Point Plot, Point Shapes