Array size mismatch cellfun

Help me.

D = {[1 2],[1 1] ;[1 6 ],[5 2]}
L=[1 0 0 0; 0 1 0 0 ]; 
out=cellfun(@(x) x*L,D,'un',0)

In result:

size(D)=(2,2) ,size(L)=(2,4) , size(out)=(2,2) Why the size(out) is not equal to (2,4),as by matrix multiplication

Answer 1

[Matt J]

The output of cellfun must always satisfy size(out)=size(D). Cellfun always operates on D element by element.

[RoboKid]

Thank you Matt ..

Answer 2

[Walter Roberson]

out is going to be a cell array. Each of its locations is going to have a 2 x 4 array. The 2 x 2 corresponds to the shape of the cell array D, 2 x 2, not to the size of the contents of D.

[Matt J]

I think you mean, each location is going to have a 1x4 array.

[RoboKid]

Thank you Walter.