public function setData($data = array())
    {
        

    	//empty local data
    	$this->rows = array();
    	//fill the local data
		foreach($data as $rowId => $cells){
			if(is_array($cells)){
				$this->addRow($rowId, $cells);
			}else if(is_string($cells)){
				$this->addRow($cells);
			}
		}

        
    }