I would like to know exactly how to enclose my EM density map within a cube of specified size (where x, y and z have equal dimensions,       i.e  x,y,z = 150 pixels).

It seems that when I place a marker (from volume tracer) on my map and then specify the padding number a rectangular cube is produced instead.

I there a simple command to do this or can it be done from the GUI?

Many thanks

T.I

PhD student, London