Subversion-Projekte lars-tiefland.php_share

<?php

// $Id: balloonex1.php,v 1.5 2002/12/15 16:08:51 aditus Exp $

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

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

// Some data

$datax = array(1,2,3,4,5,6,7,8);

$datay = array(12,23,95,18,65,28,86,44);

// Callback for markers

// Must return array(width,color,fill_color)

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

// default value for that parameter will be used.

function FCallback($aVal) {

    // This callback will adjust the fill color and size of

    // the datapoint according to the data value according to

    if( $aVal < 30 ) $c = "blue";

    elseif( $aVal < 70 ) $c = "green";

    else $c="red";

    return array(floor($aVal/3),"",$c);

}

// Setup a basic graph

$graph = new Graph(400,300,'auto');

$graph->SetScale("linlin");

$graph->img->SetMargin(40,100,40,40);

$graph->SetShadow();

$graph->title->Set("Example of ballon scatter plot");

// Use a lot of grace to get large scales

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

// Make sure X-axis as at the bottom of the graph

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

// 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->SetCallback("FCallback");

// Setup the legend for plot

$sp1->SetLegend('Year 2002');

// Add the scatter plot to the graph

$graph->Add($sp1);

// ... and send to browser

$graph->Stroke();

?>