# can't set a fixed frame to use octomap mapping [closed]

i am using octomap mapping to create a map from lidar VLP-16 PointCloud2 messages, however every time my robot moves forward, i keep loosing the previous mapping. i think it's because i can't set a fixed frame in rviz, i can't find the fixed frame "map" to be working

How could i Be able to create the whole map using octomap mapping ?

This appears to be a duplicate of #q279022. Please don't post new questions if you have new information. Update your original question with the new info. Use the edit link/button for that.