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How to find out certain number in MxN matrix?

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sam moor
sam moor on 23 Apr 2017
Edited: dpb on 24 Apr 2017
I have a matrix as shown below in the figure. I want to find out the number greater than 0.7 going from left column to right except 1st row. For example, the number greater than 0.7 going from 1st column(except 1st row) is column 3. Than once, I found in column 3, I want to take minimum value of two rows (row 2 and row 3) (i.e. 0.7054). Than, I want corresponding number from 1st row of same column i.e. 0.45 from the figure below. Finally, I want to save in new matrix for this two number(0.45 and 0.7054).

Accepted Answer

dpb
dpb on 24 Apr 2017
Edited: dpb on 24 Apr 2017
[i,j]=find(X(2:end,:)>0.7,1);
res=[min(X(2:3,j)); X(1,j)];
Do whatever you wish with the result.
  4 Comments
dpb
dpb on 24 Apr 2017
Thx, Stephen for fixing typo...woulda' thunk ML would've prompted sam for automagic fixup...but I guess it wasn't parse-able enough for a guess, even.

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