Assign values in the cell

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Turbulence Analysis 2021-7-16

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评论： Rik 2022-4-25

采纳的回答： Rik

matlab.mat

Hi,

I have the 72 x 1 cell named output 1 (attached here).

As shown in the attachment, some cells got empty matrix, I intend to add zero values in the manner of 8x1 into all the all empty cells ..

Any idea how to assign this .. ??

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Rik 2021-7-16

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https://ww2.mathworks.cn/matlabcentral/answers/879793-assign-values-in-the-cell#answer_747968

编辑：Rik 2021-7-16

在 MATLAB Online 中打开

You mean like this?

output1={[1 2;3 4],[]};
L=cellfun(@isempty,output1);
output1(L)={zeros(8,1)};
output1
output1 = 1×2 cell array
    {2×2 double}    {8×1 double}

Note that cellfun has a legacy mode, which is often much faster, but is limited in terms of what data types will work.

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Amir Pasha Zamani 2022-4-25

It only works for a single element of the cell.

I need to pre-assign values (let's say zeros(10,10)) to all cell elemenst.

Rik 2022-4-25

在 MATLAB Online 中打开

@Amir Pasha Zamani L can be a logical array with as many elements as output1 (or fewer). So can you explain what you mean?

To pre-allocate the array you describe I suggest using repmat or repelem:

YouWant=repmat({zeros(10,10)},2,3)
YouWant = 2×3 cell array
    {10×10 double}    {10×10 double}    {10×10 double}
    {10×10 double}    {10×10 double}    {10×10 double}

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