fraccircshift

expands circshift to non-integer shift values

fraccircshift(A, shiftsize) expands the MATLAB function circshift to fractional shift values, using linear interpolation. In contrast to other approaches to non-integer shifts of matrices on the base of fft2 or interp2, the number of dimensions of A is not limited, and the syntax of circshift applies. For integer elements of shiftsize, fraccircshift and circshift give the same results.