Multiply a cell array with a scalar
显示 更早的评论
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.
采纳的回答
Azzi Abdelmalek
2014-2-10
编辑：Azzi Abdelmalek
2014-2-10
yournumber=2;
a={[1 2 3],[2 5;6 8], [2 5 8 7]}
cellfun(@(x) x*yournumber,a,'un',0)
4 个评论
Patrik Ek
2014-2-10
Tai Doan
2016-6-8
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
2016-8-4
编辑：Andrew Bliss
2016-8-4
'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.
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
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Structures 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
