getQDimQS
Usage: [q,dd,dc] = getQDimQS(A,dim)
get dimension for every Q in QIDX for given QSpace object
dim is dimension to check (dim=='op' can be used to
consider both dimensions of an operator simultaneously)
Data returned
q symmetry labels present (unique; n x nsymlabels)
dd corresponding dimension of reduced data (n)
dc corresponding dimension of Clebsch-Gordan (n x nsym)
AW (C) Jun 2007 ; Oct 2010