public function createConfiguration(array $addedVocabularyData, array $learnedVocabularyData, Date $startDate, $chartId)
{
$series = array(array('name' => 'Added vocabulary', 'data' => $addedVocabularyData, 'color' => '#5D6FE3', 'pointStart' => new Expr('Date.UTC(' . $startDate->getYear() . ', ' . $startDate->getMonth() . ', ' . $startDate->getDay() . ')'), 'pointInterval' => new Expr('24 * 3600 * 1000')), array('name' => 'Learned vocabulary', 'data' => $learnedVocabularyData, 'color' => '#5DB83D', 'pointStart' => new Expr('Date.UTC(' . $startDate->getYear() . ', ' . $startDate->getMonth() . ', ' . $startDate->getDay() . ')'), 'pointInterval' => new Expr('24 * 3600 * 1000')));
$ob = new Highchart();
$ob->chart->renderTo($chartId);
$ob->title->text('Vocabulary');
$ob->xAxis->type('datetime');
$ob->exporting->enabled(false);
$ob->series($series);
return $ob;
}
