Source Code for Sample - Gradient Filled Step Chart
Gradient Filled Step Chart
Demonstrate gradient fillings,
version 1.4, 03-Aug-2005 21:21
<?php
/**
* Usage example for Image_Graph.
*
* Main purpose:
* Demonstrate gradient fillings
*
* Other:
* None specific
*
* $Id: gradient_step.php,v 1.4 2005/08/03 21:21:53 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
)
);
// create the graph
$Graph =& Image_Graph::factory('graph', $Canvas);
$Font =& $Graph->addNew('font', 'Verdana');
$Font->setSize(8);
$Graph->setFont($Font);
$Graph->add(
Image_Graph::vertical(
Image_Graph::factory('title', array('Gradient Filled Step Chart', 11)),
Image_Graph::horizontal(
$Plotarea = Image_Graph::factory('plotarea'),
Image_Graph::factory('title', array('Anybody recognize?', array('size' => 7, 'color' => 'gray@0.6', 'angle' => 270))),
98
),
5)
);
$Grid =& $Plotarea->addNew('line_grid', array(), IMAGE_GRAPH_AXIS_Y);
$Grid->setLineColor('white@0.4');
$Dataset =& Image_Graph::factory('dataset');
$Dataset->addPoint(1, 20);
$Dataset->addPoint(2, 10);
$Dataset->addPoint(3, 35);
$Dataset->addPoint(4, 5);
$Dataset->addPoint(5, 18);
$Dataset->addPoint(6, 33);
$Plot =& $Plotarea->addNew('step', array(&$Dataset));
$Fill =& Image_Graph::factory('gradient', array(IMAGE_GRAPH_GRAD_VERTICAL, 'darkgreen', 'white'));
$Plot->setFillStyle($Fill);
$Fill =& Image_Graph::factory('gradient', array(IMAGE_GRAPH_GRAD_VERTICAL, 'yellow', 'darkred'));
$Plotarea->setFillStyle($Fill);
$AxisY =& $Plotarea->getAxis(IMAGE_GRAPH_AXIS_Y);
$AxisY->forceMaximum(40);
$AxisY->setLabelInterval(10);
$Graph->setBackgroundColor('green@0.2');
$Graph->setBorderColor('black');
$Graph->setPadding(10);
$Plot->setBorderColor('black');
// output the graph
$Graph->done();
?>