Source Code for Sample - Annual income
Annual income
Demonstrate a plot,
version 1.4, 03-Aug-2005 21:21
<?php
/**
* Usage example for Image_Graph.
*
* Main purpose:
* Demonstrate a plot
*
* Other:
* None specific
*
* $Id: misc02.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';
function XtoYear($Value)
{
return floor($Value+2000);
}
function salaries($Value)
{
// I wish!
return exp($Value)+1000;
}
// create the graph as a 500 x 300 image
$Graph =& Image_Graph::factory('graph', array(400, 500));
$Graph->setBackground(Image_Graph::factory('gradient', array(IMAGE_GRAPH_GRAD_VERTICAL, 'lightsteelblue', 'papayawhip')));
// create a random dataset to use for demonstrational purposes
$DataSet =& Image_Graph::factory('function', array(1, 9, 'salaries', 8));
$DataSet2 =& Image_Graph::factory('dataset');
$DataSet2->addPoint('CEO', 10);
$DataSet2->addPoint('TAP', 32);
$DataSet2->addPoint('TBF', 13);
$DataSet2->addPoint('ABC', 19);
$DataSet2->addPoint('QED', 26);
// create and set the plot font
$Font =& $Graph->addNew('font', 'Verdana');
$Font->setSize(7);
$Graph->setFont($Font);
// add a plot area in a vertical layout to display a title on top
$Graph->add(
Image_Graph::vertical(
Image_Graph::factory('title', array('Annual income', 11)),
Image_Graph::vertical(
$Plotarea = Image_Graph::factory('plotarea'),
Image_Graph::vertical(
$Plotarea2 = Image_Graph::factory('plotarea'),
$Legend2 = Image_Graph::factory('legend'),
90
)
),
5
),
5
);
$Legend2->setPlotarea($Plotarea2);
// create a bar grid and fill it with a gradient fill white->lightgray
$Grid =& $Plotarea->addNew('bar_grid', null, IMAGE_GRAPH_AXIS_Y);
$Grid->setFillColor('gray@0.2');
$Plotarea->setFillColor('gray@0.2');
// add a line plot to the plotarea based on the function dataset
$Plot =& $Plotarea->addNew('line', array(&$DataSet));
// add coins-icon as marker
$Plot->setMarker(Image_Graph::factory('Image_Graph_Marker_Icon', './images/coins.png'));
$AxisX =& $Plotarea->getAxis(IMAGE_GRAPH_AXIS_X);
$AxisY =& $Plotarea->getAxis(IMAGE_GRAPH_AXIS_Y);
// make x-axis start at 0
$AxisX->forceMinimum(0);
// make x-axis end at 9
$AxisX->forceMaximum(9);
// show axis arrows
$AxisY->showArrow();
// make y-axis have a maximum at 9.500
$AxisY->forceMaximum(9500);
// create a datapreprocessor to map X-values to years
$AxisX->setDataPreprocessor(Image_Graph::factory('Image_Graph_DataPreprocessor_Function', 'XtoYear'));
$AxisY->setDataPreprocessor(Image_Graph::factory('Image_Graph_DataPreprocessor_Currency', "US$"));
$Plot2 =& $Plotarea2->addNew('pie', array(&$DataSet2));
$Plotarea2->hideAxis();
$Fill =& Image_Graph::factory('Image_Graph_Fill_Array');
$Fill->addNew('gradient', array(IMAGE_GRAPH_GRAD_RADIAL, 'white', 'red'));
$Fill->addNew('gradient', array(IMAGE_GRAPH_GRAD_RADIAL, 'white', 'blue'));
$Fill->addNew('gradient', array(IMAGE_GRAPH_GRAD_RADIAL, 'white', 'yellow'));
$Fill->addNew('gradient', array(IMAGE_GRAPH_GRAD_RADIAL, 'white', 'green'));
$Fill->addNew('gradient', array(IMAGE_GRAPH_GRAD_RADIAL, 'white', 'orange'));
$Plot2->setFillStyle($Fill);
$Marker2 =& $Graph->addNew('value_marker', IMAGE_GRAPH_VALUE_Y);
$Plot2->setMarker($Marker2);
$Marker2->setDataPreprocessor(Image_Graph::factory('Image_Graph_DataPreprocessor_Formatted', '%0.0f%%'));
$Plot2->explode(20, 'TBF');
// output the graph
$Graph->done();
?>