/**
* 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;
}
<?php
require '../lib/GoogleVennDiagram.php';
//~ $chart = new GoogleVennDiagram(300, 150);
//~ $data = new GoogleChartData(array(10,10));
//~ $data->setColor(array('FF0000', '00FF00'));
//~ $data->setLegends(array('A','B'));
//~ $chart->addData($data);
//~ $chart->setIntersectAB(1);
//~ var_dump($chart->getQuery());
//~ printf('<iframe src="%s" width="500" height="500"></iframe>',$chart->getValidationUrl());
//~ echo $chart->toHtml();
//~ unset($chart);
$chart = new GoogleVennDiagram(300, 150);
$data = new GoogleChartData(array(10, 20, 30));
$data->setColor(array('FF0000', '00FF00', '0000FF'));
$data->setLegends(array('A', 'B', 'C'));
$data->setLabels(array('A', 'B', 'C'));
$chart->addData($data);
$chart->setIntersectAB(1);
$chart->setIntersectAC(2);
$chart->setIntersectBC(3);
var_dump($chart->getQuery());
printf('<iframe src="%s" width="500" height="500"></iframe>', $chart->getValidationUrl());
echo $chart->toHtml();
//~ echo $chart;
