public function activityStats($width = 250, $height = 100, $showLegends = true)
{
$streamModel = new StreamModel();
$inData = $streamModel->getActivityStats();
$type = 'cht=ls';
$style = 'chco=000000';
$size = 'chs=' . $width . 'x' . $height;
$data = 'chd=t:' . implode(',', array_values($inData));
$legends = $showLegends ? 'chl=' . implode('|', array_keys($inData)) : array();
return self::URL . implode('&', array($type, $size, $data, $legends, $style));
}
