Too many input arguments error

set(get(gca,'children'),'cdata',squeeze(Img(:,:,S,:),ImgSg(:,:,Si,:),ImgCr(:,:,S1,:)))

If I don't put ImgSg(:,:,Si,:),ImgCr(:,:,S1,:) then it's ok. But why are they too many input arguments?

Answer 1

[Jan]

The error message concerns squeeze:

A = Img(:,:,S,:)
B = ImgSg(:,:,Si,:);
C = ImgCr(:,:,S1,:);
X = squeeze(A, B, C)   % <== 3 inputs, but SQUEEZE takes 1 only

Maybe you want:

squeeze([Img(:,:,S,:), ImgSg(:,:,Si,:), ImgCr(:,:,S1,:)])

or

squeeze(Img(:, :, [S, Si, S1], :))

But then the produced array is 4D and CData is a matrix usually.

Answer 2

[Rik]

I would assume this syntax sets the cdata property of all the children to the same image. If you want to do multiple things, use a loop or repeated code. Or even better: get handles to the objects you are interested in, instead of relying on a specific number and order of children, as this is very prone to change (execution order or another Matlab release).

kids=get(gca,'children');
set(kids(1),'cdata',squeeze(Img(:,:,S,:))
set(kids(2),'cdata',ImgSg(:,:,Si,:))
set(kids(3),'cdata',ImgCr(:,:,S1,:))