position of values in a matrix

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sampath kumar punna
sampath kumar punna on 29 Oct 2019
i have a set of matrix
23 24
35 2
12 19
24 23
12 15
26 17
i want to know the position of in the matrix of [35 2], [12 15]
which is 2 and 5
is it possible to get the position of it.

Answers (2)

Alex Mcaulley
Alex Mcaulley on 29 Oct 2019
A = [23 24
35 2
12 19
24 23
12 15
26 17]
loc = find(ismember(A,[35 2],'rows'))
loc =
2
  1 Comment
Alex Mcaulley
Alex Mcaulley on 29 Oct 2019
Another option:
[~,loc,~] = intersect(A,[35 2],'rows')
loc =
2

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ME
ME on 29 Oct 2019
If I understand what you are asking then you could use:
Z=[23 24; 35 2; 12 19; 24 23; 12 15; 26 17];
M=[35 2; 12 15];
pos = find(ismember(Z, M, 'rows') == 1);
where Z is your original matrix, M is a matrix of the items you want to search for and pos is the output containing the locations of those items.
  2 Comments
sampath kumar punna
sampath kumar punna on 30 Oct 2019
this code is not working when the elements in the row are repeated

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