ranking the data in matrix and arrange them as per rank.

Question

Karanvir singh Sohal 2021-4-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/792057-ranking-the-data-in-matrix-and-arrange-them-as-per-rank

评论： Bruno Luong 2021-4-4

采纳的回答： Bruno Luong

在 MATLAB Online 中打开

Hello!

I have a matrix D and E

D=[1 2 3; 7 8 9; 4 5 6; 3 0 5];
E=[D sum(D')' ranks(sum(D')')]

output of E is

E =     [   1            2            3            6            1
            7            8            9           24            4
            4            5            6           15            3
            3            0            5            8            2]

Ok now I have 2 doubts

I want to rank(last column of E) in a way that highest(24) value in column 4 gets rank 1.
I want sort the data in another matrix such that rank 1 row gets on top.

expected results

[7            8            9           24            1
          5            6           15            2
          0            5            8            3
          2            3            6            4]

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Answer 1

Bruno Luong 2021-4-4

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/792057-ranking-the-data-in-matrix-and-arrange-them-as-per-rank#answer_666427

在 MATLAB Online 中打开

>> D=[1 2 3; 7 8 9; 4 5 6; 3 0 5];
E=[D sum(D')' ranks(sum(D')')]
Unrecognized function or variable 'ranks'.
 
Did you mean:
>> E=[D sum(D')']
E =
     1     2     3     6
     7     8     9    24
     4     5     6    15
     3     0     5     8
>> sortrows(E,-4)
ans =
     7     8     9    24
     4     5     6    15
     3     0     5     8
     1     2     3     6