hi!
I am trying to build a grouped bar graph with JPGraph and it's giving me the standard "The image “http://localhost/testgraphs.php” cannot be displayed, because it contains errors." and I don't know why. Anyone? I've included all code except the $_SESSION variables. The important ones are explained in the weird comments I've made.
<?php
session_start();
include ("jpgraph/jpgraph.php");
include ("jpgraph/jpgraph_bar.php");
include ("jpgraph/jpgraph_line.php");
include ("jpgraph/jpgraph_iconplot.php");
require_once("jpgraph/jpgraph_date.php");
$graphWidth = $_SESSION['graphWidth'];
$graphHeight = $_SESSION['graphHeight'];
function TimeCallback($aVal)
{
return Date('',strtotime($aVal));
}
$account = $_SESSION['account'];
$monthData = $_SESSION['arr_temps_by_month'];
//print_r($monthData);
foreach($monthData as $aValue){
//print_r($aValue);
$year = $aValue['startingYear'];
$month = intval(date('m',strtotime($aValue['startingYearMonth'])));
$ydata[$year][$month] = $aValue['monthUsage'];
//echo "<br>";
}unset($aValue);
//$ydata: this is the best format ive got yet! its a 2d array with $ydata[$year][$month] = monthusage BEST 4:45 PM 6-25
foreach ($ydata as $data)
{
if (!$data['1'])
{
$data['1'] = 0;
}
if (!$data['2'])
{
$data['2'] = 0;
}
if (!$data['3'])
{
$data['3'] = 0;
}
if (!$data['4'])
{
$data['4'] = 0;
}
if (!$data['5'])
{
$data['5'] = 0;
}
if (!$data['6'])
{
$data['6'] = 0;
}
if (!$data['7'])
{
$data['7'] = 0;
}
if (!$data['8'])
{
$data['8'] = 0;
}
if (!$data['9'])
{
$data['9'] = 0;
}
if (!$data['10'])
{
$data['10'] = 0;
}
if (!$data['11'])
{
$data['11'] = 0;
}
if (!$data['12'])
{
$data['12'] = 0;
}
ksort($data);
//print_r($data);
$ydataClean[]=$data; //this is now $ydataClean[0][01]=monthusage etc. it removes starting year. BESTTTTT 5:09 pm 6-25
//echo "<br>";
}unset($data);
//print_r($ydataClean);
for($num=0;$num<count($ydataClean);$num++)
{
$bplot[$num] = new BarPlot($ydataClean[$num]);
//$bplot[$num]->SetFillColor([$i]);
//$bplot[$num]->SetLegend($groupU[$i]);
}unset($num);
$gbarplot = new GroupBarPlot($bplot);
$months=$gDateLocale->GetShortMonth();
// Create the graph.
$graph = new Graph($graphWidth,$graphHeight);
$graph->SetScale("textlin",0,100);
// Add the plots to the graph
$graph->Add($gbarplot);
$graph->title->Set("Total Monthly Use");
$graph->title->Align("center");
$graph->xaxis->SetTitle("","center");
$graph->yaxis->title->Set("");
$gbarplot->SetWidth(0.8);
$graph->legend->SetFont(FF_ARIAL,FS_NORMAL,8);
$graph->title->SetFont(FF_ARIAL,FS_BOLD,15);
$graph->yaxis->title->SetFont(FF_ARIAL,FS_BOLD,12);
$graph->xaxis->title->SetFont(FF_ARIAL,FS_BOLD,12);
$graph->yaxis->SetFont(FF_FONT1,FS_NORMAL,8);
$graph->xaxis->SetFont(FF_FONT1,FS_NORMAL,8);
$icon = new IconPlot('logo_med.gif',$graphWidth/2,$graphHeight/2.2,$graphHeight/400,40);
$icon->SetAnchor('center','center');
$graph->Add($icon);
$graph->Stroke();
//$fileName = "downloads/testgraphs_".$account.".png";
//$graph->img->Stream($fileName);
//$graph->img->Headers();
//$graph->img->Stream();
?>
