5.19. Example - Bar Chart with Data Value Labels
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## 5.19. Example - Bar Chart with Data Value Labels

This is a bar chart with data value labels. Data value labels can be used as an alternative to (or along with) Y tick labels, but only with bar and stackedbar charts. (Bar chart data value labels were added to PHPlot-5.0rc3.)

Example 5.19. Bar Chart with Data Value Labels

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

    $data = array(
      array('China', 1306.31),           array('India', 1080.26),
      array('United States',  295.73),   array('Indonesia', 241.97),
      array('Brazil', 186.11),           array('Pakistan', 162.42),
      array('Bangladesh', 144.32),       array('Russia', 143.42),
    );

    $plot = new PHPlot(800, 600);
    $plot->SetImageBorderType('plain');
    $plot->SetPlotType('bars');
    $plot->SetDataType('text-data');
    $plot->SetDataValues($data);
    $plot->SetTitle("World's Most Populous Countries\n2005 Population in Millions");

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

    # Make sure Y=0 is displayed:
    $plot->SetPlotAreaWorld(NULL, 0);
    # Y Tick marks are off, but Y Tick Increment also controls the Y grid lines:
    $plot->SetYTickIncrement(100);

    # Turn on Y data labels:
    $plot->SetYDataLabelPos('plotin');

    # With Y data labels, we don't need Y ticks or their labels, so turn them off.
    $plot->SetYTickLabelPos('none');
    $plot->SetYTickPos('none');

    # Format the Y Data Labels as numbers with 1 decimal place.
    # Note that this automatically calls SetYLabelType('data').
    $plot->SetPrecisionY(1);

    $plot->DrawGraph();

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5.18. Example - Two Plots on One Image | Home | 5.20. Example - Stacked Bars with Y Data Value Labels