Dear Junjie,
the geometry layer is automatically generated at the position calculated as the average of the minimum and maximum projection limits. The projection limits are by default the minimum and maximum of the USRBIN scorings, but they can be manually adjusted.
NOTE: It is important to set the projection limits reasonably, as the presented values are averages between the limits! See slide 53-57 of
If you want to have a geometry layer at a different height, you can specify it’s position with the Pos parameter at the marked section of the plot window:
Cheers,
David