How to remove cells in cell matrix that are a certain value?

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Dc215905 2021-6-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/859795-how-to-remove-cells-in-cell-matrix-that-are-a-certain-value

编辑： Rik 2021-6-19

采纳的回答： Rik

Hello,

I have a 8x4 cell matrix that looks like:

1x761200 double 1x121400 double 1x299600 double 1x555000 double

-1 -1 -1 -1

1x761200 double 1x121400 double 1x299600 double 1x555000 double

I would like to find which rows contain '-1' and then remove those rows from the matrix.

Any suggestions?

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Answer 1

Rik 2021-6-18

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/859795-how-to-remove-cells-in-cell-matrix-that-are-a-certain-value#answer_727880

编辑：Rik 2021-6-19

在 MATLAB Online 中打开

data(all(cellfun('prodofsize',data)==1),:)=[];

You might need to specify the dimension for the all function (writing of mobile, so no testing). You might also mean the any function instead of all.

Edit:

This does indeed require a modification:

L=all(cellfun('prodofsize',data)==1,2)
%                                  ^^
data(L,:)=[]

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Rik 2021-6-18

在 MATLAB Online 中打开

Let's try with a simple example (and the dimension changed, I really should learn the syntax some day..).

data={...
    [1 2],[1 2],[1 2];...
    -1   ,-1   ,1    ;...
    [1 2],[1 2],[1 2]};
L=all(cellfun('prodofsize',data)==1,2)
L = 3×1 logical array
   0
   1
   0
data(L,:)=[]
data = 2×3 cell array
    {[1 2]}    {[1 2]}    {[1 2]}
    {[1 2]}    {[1 2]}    {[1 2]}