<?php
require_once("/usr/local/lib/php/20060613/phpchartdir.php");

# The data for the area chart
$data0 = array(42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56,
    60, 70, 76, 63, 67, 75, 64, 51);
$data1 = array(50, 45, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58,
    59, 73, 77, 84, 82, 80, 84, 89);
$data2 = array(61, 79, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17, 4, 23,
    16, 25, 9, 10, 5, 7, 16);
$labels = array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
    "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24");

# Create a XYChart object of size 500 x 300 pixels
$c = new XYChart(500, 300);

# Set the plotarea at (90, 30) and of size 300 x 240 pixels.
$c->setPlotArea(90, 30, 300, 240);

# Add a legend box at (405, 100)
$c->addLegend(405, 100);

# Add a title to the chart
$c->addTitle("Daily System Load");

# Add a title to the y axis. Draw the title upright (font angle = 0)
$textBoxObj = $c->yAxis->setTitle("Database\nQueries\n(per sec)");
$textBoxObj->setFontAngle(0);

# Set the labels on the x axis.
$c->xAxis->setLabels($labels);

# Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining labels.
$c->xAxis->setLabelStep(2, 1);

# Add an area layer
$layer = $c->addAreaLayer();

# Draw the area layer in 3D
$layer->set3D();

# Add the three data sets to the area layer
$layer->addDataSet($data0, -1, "Server # 1");
$layer->addDataSet($data1, -1, "Server # 2");
$layer->addDataSet($data2, -1, "Server # 3");

# output the chart
header("Content-type: image/png");
print($c->makeChart2(PNG));
?>
