Adding values of each element of cell array

Question

lucksBi 2018-9-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/417195-adding-values-of-each-element-of-cell-array

编辑： dpb 2018-9-3

Hi i have following cell array x which contains elements like this:

 x{1,1}={0.8,1.4}  
 x{1,2}= {2.6,2,3.4}
 x{1,3}= {1,2}

i want to add values within each cell like in x{1,1}, 0.8 and 1.4 will be added.

Result = {[2.2],[8],[3]}

Thank you

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

dpb 2018-9-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/417195-adding-values-of-each-element-of-cell-array#answer_335108

编辑：dpb 2018-9-3

在 MATLAB Online 中打开

Don't "double-up" cell indexing; makes dereferencing much more complicated than need be...

Define x as

x{1,1}=[0.8,1.4];
x{1,2}= [2.6,2,3.4];
x{1,3}= [1,2];

instead. Then it's simply

>> cellfun(@sum,x)
ans =
  2.2000    8.0000    3.0000
>>

If there is some reason (but I can't think of what that could be) that the "cell inside a cell" simply must be, then you've got to do a bit more work...

x{1,1}={0.8,1.4};
x{1,2}= {2.6,2,3.4};
x{1,3}= {1,2};
>> cellfun(@(x) sum([x{:}]),x)
ans =
  2.2000    8.0000    3.0000
>>

Remembering to use them and having to write all those extra brackets and curlies is a lot of complexity; just "don't do that!" by nesting and avoid it.