Extracting data from a matrix for a particular threshold

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Akash Pandya
Akash Pandya 2019-2-27
评论： KSSV 2019-2-27
Hi,
I have a data matrix (442 x 442) which represents pairwise correlations (Cij). I have values from -1 to 1 and I would like to identify the rows and columns with values greater than 0.6 and also less than -0.6. I've tried a few solutions but I'm not having any luck.
Any form of guidance will be much appreciated.
Thank you,
Akash

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回答（1 个）

KSSV
KSSV 2019-2-27
编辑：KSSV 2019-2-27
Read about find
idx = A>0.6 | A<-0.6 ;
  2 个评论
Akash Pandya
Akash Pandya 2019-2-27
Hi,
Thank you for your answer. When I ran the code, it returned binary values 1 or 0, which is expected. If I wanted then print the row and column number, how would I do that? For example, row 2, column 9
I read about find , but I'm still not clear on how to do the above.
Akash
KSSV
KSSV 2019-2-27
you can extract the respective values using A(idx) . if you want indices use find(idx). They are logicals.

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