Source Code for Sample - Negative values
Negative values
Negative values,
version 1.2, 23-Aug-2005 21:01
<?php
/**
* Usage example for Image_Graph.
*
* Main purpose:
* Negative values
* (more a test really)
*
* Other:
* None specific
*
* $Id: html_image_map.php,v 1.2 2005/08/23 21:01:45 nosey Exp $
*
* @package Image_Graph
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
*/
require_once 'Image/Graph.php';
require_once 'Image/Canvas.php';
$Canvas =& Image_Canvas::factory('png', array('width' => 400, 'height' => 300, 'usemap' => true));
// This is how you get the ImageMap object, fx. to save map to file (using toHtml())
$Imagemap = $Canvas->getImageMap();
// create the graph
$Graph =& Image_Graph::factory('graph', $Canvas);
// add a TrueType font
$Font =& $Graph->addNew('font', 'Verdana');
// set the font size to 11 pixels
$Font->setSize(8);
$Graph->setFont($Font);
$Graph->add(
Image_Graph::vertical(
$Plotarea = Image_Graph::factory('plotarea'),
$Legend = Image_Graph::factory('legend'),
90
)
);
$Legend->setPlotarea($Plotarea);
$Dataset =& Image_Graph::factory('dataset');
$Dataset2 =& Image_Graph::factory('dataset');
$Dataset3 =& Image_Graph::factory('dataset');
$months = array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
foreach($months as $month) {
$Dataset->addPoint(
$month,
rand(0, 10),
array(
'url' => 'http://pear.php.net/?month=' . $month,
'alt' => $month,
'target' => '_blank'
)
);
$Dataset2->addPoint(
$month,
rand(11, 16),
array(
'url' => 'http://pear.veggerby.dk/' . $month . '/',
'alt' => 'Downloads for ' . $month,
'target' => '_blank'
)
);
$Dataset3->addPoint(
$month,
rand(-1, -10),
array(
'url' => 'http://pear.veggerby.dk/' . $month . '/',
'alt' => $month . ' 2005',
'target' => '_blank',
'htmltags' => array(
'onMouseOver' => 'alert("Hello, World!");'
)
)
);
}
$Plot =& $Plotarea->addNew('bar', array(&$Dataset));
$Plot->setFillColor('blue@0.2');
$Plot2 =& $Plotarea->addNew('line', array(&$Dataset2));
$Plot2->setLineColor('red');
$Plot3 =& $Plotarea->addNew('area', array(&$Dataset3));
$Plot3->setFillColor('yellow@0.2');
// output the Graph
$output = $Graph->done(
array(
'tohtml' => true,
'border' => 0,
'filename' => 'imagemap.png',
'filepath' => './',
'urlpath' => ''
)
);
print $output . '<pre>' . htmlspecialchars($output) . '</pre>';
?>