This function recomputes super-cell structure at a different graining level (gamma) or
for a specific number of super-cells (N.SC)
supercell_rescale(SC.object, gamma = NULL, N.SC = NULL)the same object as SCimplify at a new graining level
super-cell object (an output from SCimplify function)
new grainig level (provide either gamma or N.SC)
new number of super-cells (provide either gamma or N.SC)