<?php

# PHPlot Example: Stacked Squared Area plot

require_once 'phplot.php';

$title = "US Oil Imports by Country, Top 5\n"

. "Cumulative (stacked) Data";

$countries = array(

'Canada', 'Saudi Arabia', 'Mexico', 'Venezuela', 'Nigeria',

# -------- -------------- -------- ----------- ---------

);

$data = array(

array('2002', 1445, 1519, 1500, 1201, 589),

array('2003', 1549, 1726, 1569, 1183, 832),

array('2004', 1616, 1495, 1598, 1297, 1078),

array('2005', 1633, 1445, 1556, 1241, 1077),

array('2006', 1802, 1423, 1577, 1142, 1037),

array('2007', 1888, 1447, 1409, 1148, 1084),

array('2008', 1956, 1503, 1187, 1039, 922),

);

# Append a duplicate of the last row, without label, to make it visible.

$n_rows = count($data);

$data[$n_rows] = $data[$n_rows-1];

$data[$n_rows][0] = '';

$plot = new phplot(800, 600);

$plot->SetTitle($title);

$plot->SetYTitle('1000\'s of barrels per day');

$plot->SetDataType('text-data');

$plot->SetDataValues($data);

$plot->SetPlotType('stackedsquaredarea');

$plot->SetXTickPos('none');

$plot->SetLineStyles('solid');

$plot->SetYTickIncrement(250);

$plot->SetLegend($countries);

# Make room for the legend to the left of the plot:

$plot->SetMarginsPixels(200);

# Move the legend to the left:

$plot->SetLegendPixels(10, 10);

# Flip the legend order for stacked plots:

$plot->SetLegendReverse(True);

# To improve presentation in the manual:

$plot->SetImageBorderType('plain');

$plot->DrawGraph();