public function getRowEvolutionGraph($fetch = false, $rowEvolution = null)
    {
        if (empty($rowEvolution)) {
            $label = Common::getRequestVar('label', '', 'string');
            $isMultiRowEvolution = strpos($label, ',') !== false;

            $rowEvolution = $this->makeRowEvolution($isMultiRowEvolution, $graphType = 'graphEvolution');
            $rowEvolution->useAvailableMetrics();
        }

        $view = $rowEvolution->getRowEvolutionGraph();
        return $this->renderView($view);
    }