Subversion-Projekte lars-tiefland.php_share

<?php

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

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

// Callback to negate the argument

function _cb_negate($aVal) {

    return round(-$aVal);

}

// A fake depth curve

$ydata = array(0,1,4,5,8,9,10,14,16,16,16,18,20,20,20,22,22.5,22,19,19,15,15,15,15,10,10,10,6,5,5,5,4,4,2,1,0);

$n = count($ydata);

$y2data = array();

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

    $y2data[] = $ydata[$i]+10;

}

// Negate all data

$n = count($ydata);

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

    $ydata[$i] = round(-$ydata[$i]);

    $y2data[$i] = round(-$y2data[$i]);

}

// Basic graph setup

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

$graph->SetScale("linlin");

$graph->SetY2Scale("lin");

$graph->SetMargin(50,50,60,40);

$graph->SetMarginColor('darkblue');

$graph->SetColor('darkblue');

// Setup titles

$graph->title->Set("Inverting both Y-axis");

$graph->title->SetFont(FF_FONT1,FS_BOLD);

$graph->title->SetColor("white");

$graph->subtitle->Set("(Negated Y & Y2 axis)");

$graph->subtitle->SetFont(FF_FONT1,FS_NORMAL);

$graph->subtitle->SetColor("white");

// Setup axis

$graph->yaxis->SetLabelFormatCallback("_cb_negate");

$graph->xaxis->SetColor("lightblue","white");

$graph->yaxis->SetColor("lightblue","white");

$graph->ygrid->SetColor("blue");

// Setup Y2 axis

$graph->y2axis->SetLabelFormatCallback("_cb_negate");

$graph->y2axis->SetColor("darkred","white");

$graph->y2scale->SetAutoMax(0); // To make sure it starts with 0

// Setup plot 1

$lp1 = new LinePlot($ydata);

$lp1->SetColor("yellow");

$lp1->SetWeight(2);

$graph->Add($lp1);

// Setup plot 2

$lp2 = new LinePlot($y2data);

$lp2->SetColor("darkred");

$lp2->SetWeight(2);

$graph->AddY2($lp2);

$graph->Stroke();

?>