%SUBSREF Subscript reference overload of mapping%% This routine enables constructions like DATA = W.DATA,% which is similar to DATA = GETDATA(W).%% In addition V = W(I,J) is supported for affine transformations.% It is again an affine mapping using the [I,J] block of the% rotation matrix and the elements J of the support vector.%% For arbitrary mappings just V = W(:,J) is defined by output% selection: A*V returns just the features J of A*W.