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

# The data for the chart
$data = array(5.5, 3.5, -3.7, 1.7, -1.4, 3.3);
$labels = array("Jan", "Feb", "Mar", "Apr", "May", "Jun");

# Create a XYChart object of size 200 x 180 pixels
$c = new XYChart(200, 180);

# Set the plot area at (30, 20) and of size 140 x 130 pixels
$c->setPlotArea(30, 20, 140, 130);

# Configure the axis as according to the input parameter
if ($_REQUEST["img"] == "0") {
    $c->addTitle("No Axis Extension", "arial.ttf", 8);
} else if ($_REQUEST["img"] == "1") {
    $c->addTitle("Top/Bottom Extensions = 0/0", "arial.ttf", 8);
    # Reserve 20% margin at top of plot area when auto-scaling
    $c->yAxis->setAutoScale(0, 0);
} else if ($_REQUEST["img"] == "2") {
    $c->addTitle("Top/Bottom Extensions = 0.2/0.2", "arial.ttf", 8);
    # Reserve 20% margin at top and bottom of plot area when auto-scaling
    $c->yAxis->setAutoScale(0.2, 0.2);
} else if ($_REQUEST["img"] == "3") {
    $c->addTitle("Axis Top Margin = 15", "arial.ttf", 8);
    # Reserve 15 pixels at top of plot area
    $c->yAxis->setMargin(15);
} else {
    $c->addTitle("Manual Scale -5 to 10", "arial.ttf", 8);
    # Set the y axis to scale from -5 to 10, with ticks every 5 units
    $c->yAxis->setLinearScale(-5, 10, 5);
}

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

# Add a color bar layer using the given data. Use a 1 pixel 3D border for the bars.
$barLayerObj = $c->addBarLayer3($data);
$barLayerObj->setBorderColor(-1, 1);

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