using libchart

[ragonz]

i'm trying to create chart by using libchart. Here's my code

	include "libchart/classes/libchart.php";
	
	$chart= new VerticalBarChart(500,250);
	
	$dataSet = new XYDataSet();
	$conn=OCILogon ("system", "kanjaktim");
	$sql=OCIParse($conn,"select sto,sum(ano_pri) from rek_anomali group by sto");
	OCIExecute($sql);
	
	while(OCIFetch($sql)){
		$dataSet->addPoint(new Point(OCIResult($sql,1),OCIResult($sql,2)));
	}
	$chart->setDataSet($dataSet);
	
	$chart->setTitle("Jumlah Anomali per STO");
	$chart->render("generated/demo1.png");

but error message appear

Warning: imagepng() [function.imagep ng]: Unable to open 'generated/demo1.png' for writing: No such file or directory in C:\Program Files\xampp\htd ocs\Wadm_Final\ libchart\classe s\view\plot\Plo t.php on line 256

any suggestion to fix this error?

regards..

[ragonz]

figured it out already... Thx ^^