<?php
require_once("../lib/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 300 x 210 pixels. Set the background to pale yellow
# (0xffffc0) with a black border (0x0)
$c = new XYChart(300, 210, 0xffffc0, 0x000000);

# Set the plotarea at (50, 30) and of size 240 x 140 pixels. Use white (0xffffff)
# background.
$plotAreaObj = $c->setPlotArea(50, 30, 240, 140);
$plotAreaObj->setBackground(0xffffff);

# Add a legend box at (50, 185) (below of plot area) using horizontal layout. Use 8
# pts Arial font with Transparent background.
$legendObj = $c->addLegend(50, 185, false, "", 8);
$legendObj->setBackground(Transparent);

# Add a title box to the chart using 8 pts Arial Bold font, with yellow (0xffff40)
# background and a black border (0x0)
$textBoxObj = $c->addTitle("Sales Volume", "arialbd.ttf", 8);
$textBoxObj->setBackground(0xffff40, 0);

# Set the y axis label format to US$nnnn
$c->yAxis->setLabelFormat("US\${value}");

# 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 stack area layer with three data sets
$layer = $c->addAreaLayer2(Stack);
$layer->addDataSet($data0, 0x4040ff, "Store #1");
$layer->addDataSet($data1, 0xff4040, "Store #2");
$layer->addDataSet($data2, 0x40ff40, "Store #3");

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