<?php
require_once("/usr/local/lib/php/20100525/phpchartdir.php");

# The XY points for the scatter chart
$dataX = array(150, 400, 300, 1500, 800);
$dataY = array(0.6, 8, 5.4, 2, 4);

# The labels for the points
$labels = array("Nano\n100", "SpeedTron\n200 Lite", "SpeedTron\n200",
    "Marathon\nExtra", "Marathon\n2000");

# 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, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);

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

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

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

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

# Add the data as a scatter chart layer, using a 15 pixel circle as the symbol
$layer = $c->addScatterLayer($dataX, $dataY, "", GlassSphereShape, 15, 0xff3333,
    0xff3333);

# Add labels to the chart as an extra field
$layer->addExtraField($labels);

# Set the data label format to display the extra field
$layer->setDataLabelFormat("{field0}");

# Use 8pts Arial Bold to display the labels
$textbox = $layer->setDataLabelStyle("arialbd.ttf", 8);

# Set the background to purple with a 1 pixel 3D border
$textbox->setBackground(0xcc99ff, Transparent, 1);

# Put the text box 4 pixels to the right of the data point
$textbox->setAlignment(Left);
$textbox->setPos(4, 0);

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