Source Code for Sample - Antialiased Sample Chart
Antialiased Sample Chart
Antialiasing usage,
version 1.4, 03-Aug-2005 21:21
<?php
/**
* Usage example for Image_Graph.
*
* Main purpose:
* Antialiasing usage
*
* Other:
* Setup canvas, Many plotareas with one legend, Setup fillarray (filling one
* plot with different colors depeding on dataset)
*
* $Id: antialias.php,v 1.4 2005/08/03 21:21:53 nosey Exp $
*
* @package Image_Graph
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
*/
// include libraries
require_once 'Image/Graph.php';
require_once 'Image/Canvas.php';
// create a PNG canvas and enable antialiasing (canvas implementation)
$Canvas =& Image_Canvas::factory('png', array('width' => 400, 'height' => 300, 'antialias' => 'native'));
// create the graph
$Graph =& Image_Graph::factory('graph', $Canvas);
// add a TrueType font
$Font =& $Graph->addNew('font', 'Verdana');
// set the font size to 8 pixels
$Font->setSize(8);
// set the font
$Graph->setFont($Font);
// create the layout
$Graph->add(
Image_Graph::vertical(
Image_Graph::factory('title', array('Antialiased Sample Chart', 12)),
Image_Graph::vertical(
Image_Graph::horizontal(
$Plotarea1 = Image_Graph::factory('plotarea'),
$Plotarea2 = Image_Graph::factory('plotarea')
),
$Legend = Image_Graph::factory('legend'),
80
),
5
)
);
// add grids
$Grid =& $Plotarea1->addNew('line_grid', IMAGE_GRAPH_AXIS_Y);
$Grid->setLineColor('silver');
$Grid =& $Plotarea2->addNew('line_grid', IMAGE_GRAPH_AXIS_Y);
$Grid->setLineColor('silver');
// setup legend
$Legend->setPlotarea($Plotarea1);
$Legend->setPlotarea($Plotarea2);
// create the dataset
$Datasets =
array(
Image_Graph::factory('random', array(10, 2, 15, true)),
Image_Graph::factory('random', array(10, 2, 15, true)),
Image_Graph::factory('random', array(10, 2, 15, true))
);
// create the plot as stacked area chart using the datasets
$Plot =& $Plotarea1->addNew('Image_Graph_Plot_Area', array($Datasets, 'stacked'));
// set names for datasets (for legend)
$Datasets[0]->setName('Jylland');
$Datasets[1]->setName('Fyn');
$Datasets[2]->setName('Sjælland');
// set line color for plot
$Plot->setLineColor('gray');
// create and populate the fillarray
$FillArray =& Image_Graph::factory('Image_Graph_Fill_Array');
$FillArray->addColor('blue@0.2');
$FillArray->addColor('yellow@0.2');
$FillArray->addColor('green@0.2');
// set a fill style
$Plot->setFillStyle($FillArray);
// add other plots
$Plot =& $Plotarea2->addNew('line', $Datasets[0]);
$Plot->setLineColor('blue@0.2');
$Plot =& $Plotarea2->addNew('line', $Datasets[1]);
$Plot->setLineColor('yellow@0.2');
$Plot =& $Plotarea2->addNew('line', $Datasets[2]);
$Plot->setLineColor('green@0.2');
// set color
$Plotarea1->setFillColor('silver@0.3');
$Plotarea2->setFillColor('silver@0.3');
// output the Graph
$Graph->done();
?>