red=framered(F);
framered(F) computes the redundancy of a given frame F. If the redundancy is larger than 1 (one), the frame transform will produce more coefficients than it consumes. If the redundancy is exactly 1 (one), the frame is a basis.
The following simple example shows how to obtain the redundancy of a Gabor frame:
F=frame('dgt','gauss',30,40); framered(F)
The redundancy of a basis is always one:
F=frame('wmdct','gauss',40); framered(F)