root/trunk/flowmon-web/charts/stacked-bars.inc.php

<?php
#
# Copyright (C) 2008 Red Hat, Inc.
# Author: Andreas Thienemann <athienem@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; version 2 only
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

require_once('phplot-5.0.5/phplot.php');

// accept data to plot through phplot
function draw_stackedbar($chart_title, $legend, $ytitle, $data) {


    // Define general plot properties
    $data_colors = array('SkyBlue', 'green', 'orange', 'blue', 'purple', 'red', 'violet', 'azure1', 'yellow', 'DarkGreen');

    // Create the chart, write it to a newly created tmpfile.
    $output = tempnam('tmp/', 'plot');

    $plot = new PHPlot(900, 400);
    $plot->SetIsInline(True);

    //$plot->SetPrintImage(False);

    $plot->SetImageBorderType('plain');
    $plot->SetDataColors($data_colors);

    $plot->SetPlotType('stackedbars');
    $plot->SetDataType('text-data');
    $plot->SetDataValues($data);

    $plot->SetTitle($chart_title);
    $plot->SetYTitle($ytitle);
    $plot->SetLegend($legend);

    $plot->SetXTickLabelPos('none');
    $plot->SetXTickPos('none');

    $plot->SetLegendPixels(760, 40);
    $plot->SetMarginsPixels(100, 150, 50, 50);

    $plot->SetNumberFormat(',', '.');
    $plot->SetPrecisionY(0);
    $plot->SetYLabelType('data');

    $plot->SetOutputFile($output);
    $plot->DrawGraph();

    chmod($output, 0644);
    $target =  dirname($output).'/'.basename($output).'.png';
    if (rename($output, $target)) {
        return 'tmp/'.basename($target);
    } else {
        return False;
    }
}