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.imagepng]: Unable to open 'generated/demo1.png' for writing: No such file or directory in C:\Program Files\xampp\htdocs\Wadm_Final\libchart\classes\vie w\plot\Plot.php on line 256

any suggestion to fix this error?

regards..

[ragonz]

figured it out already... Thx ^^