Finding the number of occurance of each value in the each columns of a matrix.

Question

Ashwani Kumar MAlviya 2020-6-16

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https://ww2.mathworks.cn/matlabcentral/answers/549159-finding-the-number-of-occurance-of-each-value-in-the-each-columns-of-a-matrix

回答： Divya Gaddipati 2020-6-25

采纳的回答： Divya Gaddipati

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Hi there

I have a doubt in calculating frequency of repeating value.

Lets say I have a matrix 'FCL21' of m X n. n if fixed lets say 12 but m may vary according to filter in excel data.

the elements of matrix may have values 1 to 9 and 1/2 to 1/9 .

For further calculations, I need to create an matrix containing frequency of each value.

I used

XFCL21 = [sum(FCL21==1);sum(FCL21==2);sum(FCL21==3);sum(FCL21==4);sum(FCL21==5); ...
          sum(FCL21==6);sum(FCL21==7);sum(FCL21==8);sum(FCL21==9); ...
          sum(FCL21==1./2);sum(FCL21==1./3);sum(FCL21==1./4);sum(FCL21==1./5); ...
          sum(FCL21==1./6);sum(FCL21==1./7);sum(FCL21==1./8);sum(FCL21==1./9);];

It is working well for m >1. But if in some cases m = 1, It is giving me the counting from the row. that i dont need.

It suppose to give me the counting from columns only. If m = 1 and and an element have value 3 in first row and first column then in XFCL21 should

1 at 3rd row 1st column and remaining element of the column should be 0.

Please suggest me some better ways to overcome this problem.

Thanks in advance.

Regards

Ashwani