public function getChartByName($chartName = '')
    {
        $chartCount = count($this->chartCollection);
        if ($chartCount == 0) {
            return false;
        }
        foreach ($this->chartCollection as $index => $chart) {
            if ($chart->getName() == $chartName) {
                return $this->chartCollection[$index];
            }
        }
        return false;
    }