how to sort within the cell array

Question

MakM 2022-12-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1884637-how-to-sort-within-the-cell-array

回答： dpb 2022-12-26

I have the following code;

sec=({'a';'a';'b';'b';'c';'c';'a';'b'});
fir=({0;0;0;1;2;3;4;0});
all=[fir,sec];
[~,~,X] = unique(all(:,2));
all_data= accumarray(X,1:size(all,1),[],@(r){all(r,:)})
all_data = 3×1 cell array
    {3×2 cell}
    {3×2 cell}
    {2×2 cell}

I want to sort all data cell array according to first digit; for example: if we see the second cell array

all_data{2,:}
ans = 3×2 cell array
    {[0]}    {'b'}
    {[1]}    {'b'}
    {[0]}    {'b'}

First row is, 0 1 0, I want this to be 0 0 1, how can I sort these cell arrays after accumaarray function?

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Answer 1

dpb 2022-12-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1884637-how-to-sort-within-the-cell-array#answer_1136417

在 MATLAB Online 中打开

>> [~,ix]=sort(cell2mat(tmp(:,1)));
>> tmp=tmp(ix,:)
tmp =
  3×2 cell array
    {[   0]}    {'b'}
    {[   0]}    {'b'}
    {[1.00]}    {'b'}
>> 

to do the one cell...you'll probably have to wrap this in an explicit loop over the size of the input cell array; I couldn't see a convenient way to dereference in anonymous function even with my local utility function sortIndex that returns the order permutation vector instead of the sorted values.