Subversion-Projekte lars-tiefland.php_share

<?php

include ("../jpgraph.php");

include ("../jpgraph_scatter.php");

// Each ballon is specificed by four values.

// (X,Y,Size,Color)

$data = array(

    array(1,12,10,'orange'),

    array(3,41,15,'red'),

    array(4,5,19,'lightblue'),

    array(5,70,22,'yellow')

);

// We need to create X,Y data vectors suitable for the

// library from the above raw data.

$n = count($data);

for( $i=0; $i < $n; ++$i ) {

    $datax[$i] = $data[$i][0];

    $datay[$i] = $data[$i][1];

    // Create a faster lookup array so we don't have to search

    // for the correct values in the callback function

    $format[strval($datax[$i])][strval($datay[$i])] = array($data[$i][2],$data[$i][3]);

}

// Callback for markers

// Must return array(width,border_color,fill_color,filename,imgscale)

// If any of the returned values are '' then the

// default value for that parameter will be used (possible empty)

function FCallback($aYVal,$aXVal) {

    global $format;

    return array($format[strval($aXVal)][strval($aYVal)][0],'',

		 $format[strval($aXVal)][strval($aYVal)][1],'','');

}

// Setup a basic graph

$graph = new Graph(450,300,'auto');

$graph->SetScale("intlin");

$graph->SetMargin(40,40,40,40);

$graph->SetMarginColor('wheat');

$graph->title->Set("Example of ballon scatter plot with X,Y callback");

$graph->title->SetFont(FF_ARIAL,FS_BOLD,12);

$graph->title->SetMargin(10);

// Use a lot of grace to get large scales since the ballon have

// size and we don't want them to collide with the X-axis

$graph->yaxis->scale->SetGrace(50,10);

$graph->xaxis->scale->SetGrace(50,10);

// Make sure X-axis as at the bottom of the graph and not at the default Y=0

$graph->xaxis->SetPos('min');

// Set X-scale to start at 0

$graph->xscale->SetAutoMin(0);

// Create the scatter plot

$sp1 = new ScatterPlot($datay,$datax);

$sp1->mark->SetType(MARK_FILLEDCIRCLE);

// Uncomment the following two lines to display the values

$sp1->value->Show();

$sp1->value->SetFont(FF_FONT1,FS_BOLD);

// Specify the callback

$sp1->mark->SetCallbackYX("FCallback");

// Add the scatter plot to the graph

$graph->Add($sp1);

// ... and send to browser

$graph->Stroke();

?>