File Source for stat.graph.php

<?php
/**
* @desc Funzioni per la generazione dei grafici
* @package VFront
* @subpackage Stats
* @author Mario Marcello Verona <marcelloverona@gmail.com>
* @copyright 2007 Mario Marcello Verona
* @version 0.90
* @license http://www.gnu.org/licenses/gpl.html GNU Public License
*/
/**
* Funzione per la generazione dei grafici a barre
* Utilizza PEAR ed il pacchetto Image/Graph
* I grafici vengono generati nella cartella tmp in formato PNG
*
* @param array $data
* @param array $labels
* @param int $scala
* @param string $testo
* @param string $nome_file
* @param int $x
* @param int $y
* @param mixed $colore
* @param int $left
* @param string $format
* @param string $colore_sfondo
* @return bool
*/
function barre($data,$labels,$scala=5,$testo="",$nome_file="image",
$x=490,$y=280,$colore='orange',$left=160,$format='%.2f', $colore_sfondo='ivory'){
include_once 'Image/Graph.php';
$Graph =& Image_Graph::factory('graph', array($x, $y));
// create the plotarea
$Graph->add(
Image_Graph::vertical(
Image_Graph::factory('title', array($testo, 12)),
Image_Graph::vertical(
$Plotarea = Image_Graph::factory('plotarea', array('category', 'axis', 'horizontal')),
$Legend = Image_Graph::factory('legend'),
90
),
5
)
);
$Grid =& $Plotarea->addNew('line_grid', array(), IMAGE_GRAPH_AXIS_Y);
$Grid->setLineColor('black@0.1');
$Dataset =& Image_Graph::factory('dataset');
for($i=(count($data)-1);$i>=0;$i--){
$Dataset->addPoint($labels[$i], $data[$i]);
}
$Font =& $Graph->addNew('font', 'Verdana');
$Font->setSize(8);
$Graph->setFont($Font);
$Graph->setBackgroundColor($colore_sfondo.'@0.2');
$Graph->setPadding(10);
$Fill =& Image_Graph::factory('Image_Graph_Fill_Array');
$Fill->addColor('white');
$Plotarea->setFillStyle($Fill);
$Plot =& $Plotarea->addNew('bar', &$Dataset);
if(is_array($colore)){
$Fill =& Image_Graph::factory('gradient', array(IMAGE_GRAPH_GRAD_VERTICAL, $colore[0], $colore[1]));
$Plot->setFillStyle($Fill);
}
else{
$Fill =& Image_Graph::factory('Image_Graph_Fill_Array');
$Fill->addColor($colore);
$Plot->setFillStyle($Fill);
}
$Graph->done( array('filename' => FRONT_REALPATH."/tmp/$nome_file.png") );
if(is_file(FRONT_REALPATH."/tmp/$nome_file.png"))
return true;
else
return false;
}
/**
* Funzione per la generazione dei grafici a torta
* Utilizza PEAR ed il pacchetto Image/Graph
* Nella versione di Image/Graph 0.72 c'è un bug nella generazione delle etichette.
* Utilizzare la versione CVS o precedente|successiva del file Image/Graph/Plot/Pie.php
* I grafici vengono generati nella cartella tmp in formato PNG
*
* @param array $data
* @param array $labels
* @param string $testo
* @param string $nome_file
* @param int $x
* @param int $y
* @return bool
*/
function torta($data,$labels,$testo="",$nome_file="image",$x=490,$y=300){
include_once 'Image/Graph.php';
// create the graph
$Graph =& Image_Graph::factory('graph', array($x, $y));
// create the plotarea
$Graph->add(
Image_Graph::vertical(
Image_Graph::factory('title', array($testo, 12)),
Image_Graph::horizontal(
$Plotarea = Image_Graph::factory('plotarea'),
$Legend = Image_Graph::factory('legend'),
70
),
5
)
);
$Legend->setPlotarea($Plotarea);
$Dataset =& Image_Graph::factory('dataset');
for($i=(count($data)-1);$i>=0;$i--){
$Dataset->addPoint($labels[$i], $data[$i],$labels[$i]);
}
$Plot =& $Plotarea->addNew('pie', array(&$Dataset));
$Plotarea->hideAxis();
$Font =& $Graph->addNew('font', 'Verdana');
$Font->setSize(6.5);
$Graph->setFont($Font);
$Graph->setBackgroundColor('white');
$Graph->setPadding(10);
// create a Y data value marker
$Marker =& $Plot->addNew('Image_Graph_Marker_Value', IMAGE_GRAPH_PCT_Y_TOTAL);
// create a pin-point marker type
$PointingMarker =& $Plot->addNew('Image_Graph_Marker_Pointing_Angular', array(15, &$Marker));
// and use the marker on the 1st plot
$Plot->setMarker($PointingMarker);
// format value marker labels as percentage values
$Marker->setDataPreprocessor(Image_Graph::factory('Image_Graph_DataPreprocessor_Formatted', '%0.1f%%'));
$Plot->Radius = 2;
$FillArray =& Image_Graph::factory('Image_Graph_Fill_Array');
$Plot->setFillStyle($FillArray);
for($i=0;$i<count($labels);$i++){
$FillArray->addColor(generate_rand_hex_color(),$labels[$i]);
}
$Plot->explode(5);
// Mando l'output
$Graph->done( array('filename' => FRONT_REALPATH."/tmp/$nome_file.png") );
if(is_file(FRONT_REALPATH."/tmp/$nome_file.png"))
return true;
else
return false;
}
/**
* @desc Genera un seed per i numeri pseudocasuali
* @return float
*/
function make_seed()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
}
/**
* @desc Genera un colore pseudocasuale in formato esadecimale
* @return srting
*/
function generate_rand_hex_color() {
mt_srand(make_seed());
return "#".sprintf("%02X%02X%02X", mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
}
?>

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Source for file stat.graph.php