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

# The XY points for the scatter chart
$dataX = array(200, 400, 300, 250, 500);
$dataY = array(40, 100, 50, 150, 250);

# The custom symbols for the points
$symbols = array("robot1.png", "robot2.png", "robot3.png", "robot4.png", "robot5.png"
    );

# Create a XYChart object of size 450 x 400 pixels
$c = new XYChart(450, 400);

# Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
# (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
# (0xc0c0c0)
$c->setPlotArea(55, 40, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

# Add a title to the chart using 18 pts Times Bold Itatic font.
$c->addTitle("Battle Robots", "timesbi.ttf", 18);

# Add a title to the y axis using 12 pts Arial Bold Italic font
$c->yAxis->setTitle("Speed (km/s)", "arialbi.ttf", 12);

# Add a title to the y axis using 12 pts Arial Bold Italic font
$c->xAxis->setTitle("Range (km)", "arialbi.ttf", 12);

# Set the axes line width to 3 pixels
$c->xAxis->setWidth(3);
$c->yAxis->setWidth(3);

# Add each point of the data as a separate scatter layer, so that they can have a
# different symbol
for($i = 0; $i < count($dataX); ++$i) {
    $scatterLayerObj = $c->addScatterLayer(array($dataX[$i]), array($dataY[$i]));
    $dataSetObj = $scatterLayerObj->getDataSet(0);
    $dataSetObj->setDataSymbol(dirname(__FILE__)."/".$symbols[$i]);
}

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