function getChart($REQUEST)
{
$grid = new grid(true);
$grid->setTable("grafik");
$grid->setGroupBy("tahun");
$grid->addField(array("field" => "tahun", "name" => "tahun"));
$grid->addField(array("field" => "SUM(page_view)", "name" => "page_view"));
$grid->addField(array("field" => "SUM(page_visit)", "name" => "page_visit"));
return $grid->doRead($REQUEST);
}