problem in finding the mode for the following matrix

Question

mahesh bvm 2014-1-9

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https://ww2.mathworks.cn/matlabcentral/answers/111835-problem-in-finding-the-mode-for-the-following-matrix

评论： mahesh bvm 2014-1-9

采纳的回答： Patrik Ek

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Consider a matrix JJ

JJ

JJ =

3159    1.9527    1.8476    1.9527
7977    0.8633    0.0298    0.8633
0438    1.0645    0.0438    0.0880
7228    2.0592    0.7228    0.2329
2228    1.4990    0.2228    0.0414

Now,I need find the mode in each row. I tried this already by giving the command mode(JJ,2). The answer I got is this.

mode(JJ,2)

ans =

As it can be seen the answer is wrong with respect to 2nd, 4th and 5th rows. The common elements or mode of 2nd, 4th and 5th is 0.8633, 0.7228 and 0.2228 respectively. Why the mode command is showing a wrong answer??

Any help is highly appreciated.

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Answer 1

Patrik Ek 2014-1-9

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https://ww2.mathworks.cn/matlabcentral/answers/111835-problem-in-finding-the-mode-for-the-following-matrix#answer_120389

在 MATLAB Online 中打开

It works for me with the given atrix. Are you sure this is the exact values of JJ? Otherwise you need to truncate it to a tolerance. This is done as

newMtx = round(1/tol*mtx)*tol;

truncation to 4 decimals would then be have tol = 1/10^4

newMtx = round((10^4)*mtx)/10^4;

Thank you for accepting the answer :)

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mahesh bvm 2014-1-9

Patrick.... You made my day!!!!! your suggestion to use tolerance level did bring out great results..... I checked that with varied values of 'n' and all the answers were perfect!. Thank you, Thank you so much!

mahesh bvm 2014-1-9

Thank you jos for your help too... I will check out your code too. ......

Guys check this new problem "Problem in aligning the data files one below the other.." posted by me, it seems a small problem is present in terms of aligning the plots one below the other....

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