Neznáte nějaký freewebhosting s podporou JpGraph PHP knihoven ?
Ráz jsem testoval webzdarma  a dopadlo to katastrofálně:

Ostatně můžete si to vyzkoušet sami:

<?php
include ("../jpgraph.php");
include ("../jpgraph_line.php");

$ydata = array(11,3,8,12,5,1,9,13,5,7);

// Create the graph. These two calls are always required
$graph = new Graph(350,250,"auto");	
$graph->SetScale("textlin");
$graph->img->SetMargin(30,90,40,50);
$graph->xaxis->SetFont(FF_FONT1,FS_BOLD);
$graph->title->Set("Examples for graph");

// Create the linear plot
$lineplot=new LinePlot($ydata);
$lineplot->SetLegend("Test 1");
$lineplot->SetColor("blue");


// Add the plot to the graph
$graph->Add($lineplot);

// Display the graph
$graph->Stroke();
?>