undulation of Novatel to get altitude

src/subscriber_gnss_fix_novatel_publisher_ecef.cpp

@@ -24,7 +24,7 @@ void SubscriberGnssFixNovatelPublisherEcef::callback(const novatel_oem7_msgs::BE
 {
     computeAndPublish(Eigen::Vector3d(_msg->lat * M_PI / 180.0,
                                       _msg->lon * M_PI / 180.0,
-                                      _msg->hgt),
+                                      _msg->hgt+_msg->undulation),
                       _msg->header.stamp);
 }