# Manual Adjustment (Horizontal and Vertical)

A rigid horizontal and vertical correction can be applied by [creating a manual correction](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/windows/corrections#creating-corrections-manually) in the correction window. If a variable horizontal adjustment is needed, such as in the case of a challenging mobile lidar data set, or any data set with a very poor initial trajectory, use [LiDARSnap with manual corrections enabled](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/user-interface/toolbars/workflow/lidarsnap-v4).