/**
* Return plot data for the progress tracking plot, ordered by
* date in ascending order.
*/
public static function get_plot_data($project_id)
{
$data_points = NULL;
$query = new SqlQuery("SELECT remaining_date, remaining_size FROM Remaining WHERE remaining_projectid='%s' ORDER BY remaining_date ASC", $project_id);
if ($query->select_was_successful()) {
$data_points = array();
}
while ($row = $query->get_next_row()) {
$data_points[] = new DataPoint(strtotime($row['remaining_date']), $row['remaining_size']);
}
return $data_points;
}