public function getDemographicMapDataAction()
 {
     $id = $this->_request->getParam('id', '');
     $district_id = $this->_request->getParam('districtId', '');
     if ($id != "" && $district_id != "") {
         $geoModel = new Model_Geo();
         $return = $geoModel->getDemographicAssests($id, $district_id);
         echo Zend_Json::encode($return);
     } else {
         $return = array();
         $geoModel = new Model_Geo();
         $return[0] = $geoModel->getDemographicMapData();
         $return[1] = $geoModel->getDemographicDetail();
         echo Zend_Json::encode($return);
     }
 }