setupSphereSystem: Setup sphere system
Description
Reinitialize sphere system after R workspace reloading
Usage
setupSphereSystem(S, pl = 0)
Details
The internally stored sphere system has to be reinitialized
after R workspace reloading. Calling this function is needed only in case one desires to get profile
sections of the sphere system again which has been previously stored as an R (list) object and afterwards
reloaded.