protected function compute(array &$q)
{
if ($this->rotation) {
$q['chp'] = $this->rotation;
}
parent::compute($q);
// pie chart doesn't support data scaling.
// however, i still want to compute a scale for encoding format
unset($q['chds']);
}
/**
* This function needs to do some funky stuffs with the data series, because
* the chd parameter of scatter charts work quite differently.
* chd=<x_values>|<y_values>[|<optional_point_sizes>]
*
* So basically each point must be split into 3 values, placed on 3 GoogleChartData objects.
*/
protected function compute(array &$q)
{
$old_data = $this->data;
$colors = array();
// rebuild a set of 3 GoogleChartData
$series_x = array();
$series_y = array();
$series_size = array();
$legends = array();
foreach ($this->data as $i => $data) {
$colors[] = $data->computeChco();
$legends[] = $data->getLegend();
$data_x = array();
$data_y = array();
$data_size = array();
foreach ($data->getValues() as $d) {
$data_x[] = $d[0];
$data_y[] = $d[1];
$data_size[] = isset($d[2]) ? $d[2] : 10;
}
$series_x[] = $data_x;
$series_y[] = $data_y;
$series_size[] = $data_size;
}
$series_x = self::interlace($series_x);
$series_y = self::interlace($series_y);
$series_size = self::interlace($series_size);
$series_x = new GoogleChartData($series_x);
$series_y = new GoogleChartData($series_y);
$series_size = new GoogleChartData($series_size);
$this->data = array($series_x, $series_y, $series_size);
$this->setAutoScale(false);
// rebuild the legends
$series_x->setLegends($legends);
// compute
parent::compute($q);
unset($q['chds']);
// DEBUG
$this->chco = implode('|', $colors);
$this->data = $old_data;
}
protected function compute(array &$q)
{
if (!$this->data[0]) {
throw new Exception('Venn diagram needs one data series with 2 or 3 circles');
}
$values = $this->data[0]->getValues();
if (!isset($values[2])) {
// only 2 circles
$values[2] = 0;
}
$values[] = $this->intersect_ab;
if ($values[2] != 0) {
$values[] = $this->intersect_ac;
$values[] = $this->intersect_bc;
$values[] = $this->intersect_abc;
}
$this->data[0]->setValues($values);
parent::compute($q);
if (isset($q['chco'])) {
$q['chco'] = str_replace('|', ',', $q['chco']);
}
}
protected function compute(array &$q)
{
$q['chbh'] = $this->computeChbh();
parent::compute($q);
}
