Multiply a cell array with a scalar

Hi, I have a cell array that contain a number of different sized matrices. I need to multiply each of these cell elements, where the number of cells is not constant, with a single scalar value. Does anyone know how to do this? It does not work with the standard call of cellfun since the cells are of different size,

cellfun(@times,a,{2})

The reason is that I use matlab as an interface to create stuff to another program and I depending on what item I create I need to use different tones on the colormaps.

Answer 1

[Azzi Abdelmalek]

yournumber=2;
a={[1 2 3],[2 5;6 8], [2 5 8 7]}
cellfun(@(x) x*yournumber,a,'un',0)

[Patrik Ek]

Thanks, exactly what I was looking for

[Tai Doan]

Can you explain the meaning of using 'un' and 0 at the end of this line please? Do I have to use it?

    cellfun(@(x) x*yournumber,a,'un',0)

[Andrew Bliss]

'un',0 is a shorthand way of writing 'UniformOutput',false See the help for what that means - in essence it will make cellfun output a cell rather than an array.

[swenia]

This is very helpful, thanks. Follow-up question: what if I'd like to multiply each cell element with a different number stored in a vector?

For instance:

a = {[1 2; 3 4], [5 6; 7 8]}

b = [0;1]

I'd like to multiply a and b such that the result will be:

ans = {[0 0; 0 0], [5 6; 7 8]}

Edit: Nvm, I found the answer here: https://www.mathworks.com/matlabcentral/answers/476131-how-to-multiply-each-element-of-a-cell-array-by-a-different-scalar