Find number of dimensions and extent along each dimension of the signal arrays. - If 0D sqw object, nd=0, sz=zeros(1,0) (nb: []==zeros(0,0)) - if 1D sqw object, nd=1, sz=n1 - If 2D sqw object, nd=2, sz=[n1,n2] - If 3D sqw object, nd=3, sz=[n1,n2,n3] even if n3=1 - If 4D sqw object, nd=4, sz=[n1,n2,n3,n4] even if n4=1 The convention is that size(sz)=1 x ndim >> [nd,sz]=dimensions(w) % Overloaded methods: sqw/dimensions testsigvar/dimensions sigvar/dimensions IX_dataset_3d/dimensions IX_dataset_2d/dimensions IX_dataset_1d/dimensions sqw/dimensions sigvar/dimensions d4d/dimensions d3d/dimensions d2d/dimensions d1d/dimensions d0d/dimensions