public function addSinglePlot($data, $x = 0.5, $y = 0.5, $title = null) { $plot = new PiePlot(array_values($data)); $plot->SetSize($this->plot_size); $plot->SetCenter($x, $y); $plot->setLabelPos(0.6); //$plot->setLegends(array_keys($data)); if ($title != null) { $plot->title->set($title); } $this->grapher->Add($plot); }