/**
* This is an alias to FlashChart::chart('pie') that is only used for the
* pie type.
*
* For options documentation;
* http://teethgrinder.co.uk/open-flash-chart-2/pie-chart.php
*
* @example echo $flashChart->renderPie();
* @example echo $flashChart->renderPie(array('animate'=>false);
* @param array $options
* Valid options : values, animate, start_angle, tooltip
* @param string $datasetName The name to be used to associate charts with data
* @param string $chartId Name of chart. Use for seperate charts.
* @return string
*/
public function pie($options = array(), $datasetName = 'default', $chartId = 'default')
{
if (empty($this->data[$datasetName])) {
return false;
}
$this->Chart->set_bg_colour($this->bg_colour);
$pie = new Pie();
foreach ($options as $key => $setting) {
$set_method = 'set_' . $key;
$pie->{$set_method}($setting);
}
if (!empty($this->tooltip)) {
$pie->set_tooltip($this->tooltip);
}
$pies = array();
$labels = Set::extract($this->data, $this->labelsPath);
$numbers = $this->getNumbers($datasetName);
foreach ($numbers as $key => $value) {
if (isset($labels[$key]) && is_string($labels[$key])) {
$pies[] = new pie_value($value, $labels[$key]);
} else {
$pies[] = $value;
}
}
$pie->set_values($pies);
$this->Chart->add_element($pie);
return $this->renderData($chartId);
}
