Counting amount of digit occurrence in a cell

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M 2021-5-11

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https://ww2.mathworks.cn/matlabcentral/answers/827780-counting-amount-of-digit-occurrence-in-a-cell

回答： Star Strider 2021-5-11

I have this cell just with simple numbers, and I would like to count how many times each digit is repeated in this whole celll, so for example if this one would've had just 9 rows, as an output I'd like to see that i have seven two's, one three and one nine.

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M 2021-5-11

在 MATLAB Online 中打开

I've just found the answer:

1) I changed it into regular array

cell2mat(GOid_ALLProteins)

Then i used

[GC,GR] = groupcounts(x)

which i found as an answer for similar question there:

https://uk.mathworks.com/matlabcentral/answers/96504-how-can-i-count-the-occurrences-of-each-element-in-a-vector-in-matlab

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Answer 1

Star Strider 2021-5-11

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/827780-counting-amount-of-digit-occurrence-in-a-cell#answer_697660

在 MATLAB Online 中打开

Try something like this —

CellArray = num2cell([2; 2; 2; 2; 2; 2; 2; 3; 9]);
[Uc,~,ix] = unique([CellArray{:}],'stable');
Count = accumarray(ix,1);
Col1 = Uc(:);
Result = table(Col1,Count)
Result = 3×2 table
    Col1    Count
    ____    _____

     2        7  
     3        1  
     9        1  