[rsuresh]

Hi all,

I got a problem regarding the JPgraph

I am able to generate a graph with the following code for the first time
<?php
include ("jpgraph.php");
include ("jpgraph_gantt.php");
// A new graph with automatic size
$graph = new GanttGraph(0,0,"auto");
// A new activity on row '0'
$activity = new GanttBar(0,"Project","2001−12−21","2002−02−20");
$graph−>Add($activity);
// Display the Gantt chart
$graph−>Stroke();
?>

But when i refreshed the browser the image went away , I dont know what happened . I tried renaming, copying the contents to a different file and ran it still it contains the same problem .

What is a better way to learn this type of chart creations ?

Please help .....

Thanks in Advance

[Worm]

The Problem you have is the image caching i think. i wrote a little script that deletes the cached image, if there is one and then regenerates a new one. Sample code:

function show_graph($url)
{
if(check_session("logged_in") != 0) // CHECK IF USER = LOGGEDIN
{
if(!empty($_GET["image"])) // CHECK WHICH DIAGRAM TO SHOW
{
$url = $_GET["image"];
}
$tempexplode = explode("/", $url); // REMOVE PATH FROM FILENAME
$temp = $tempexplode[(count($tempexplode) - 1)];

$temp = explode(".", $temp); // CHANGE FILE EXTENSION TO .PNG
$temp[0] .= ".png";

$delfile = $temp[0];

unlink("c:/temp/".$delfile); // DELETE CACHED PICTURE

echo '<img src="./jpgraph/pages/'.$url.'">'; // GENERATE NEW ONE
}
else
{
print_error("0001");
}
}

I hope this will help you !