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location of element in matrix

Asked by jano satti on 25 Apr 2017
Latest activity Edited by Andrei Bobrov
on 25 Apr 2017
I have a matrix mat and I want to find location of x in mat matrix.location should be in order of x.
mat =[
1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
0.0099 1.0000 1.0000 0.0120 1.0000 0.0115
0.0093 1.0000 1.0000 0.0120 1.0000 0.0070
1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
0.0098 1.0000 1.0000 0.0089 1.0000 0.0093
1.0000 1.0000 1.0000 1.0000 1.0000 1.0000];
x =[
0.0089
0.0099
0.0070];
A =mat
C=x
numbersInA = unique(C)
numbersInC = unique(C)
for k = 1 : length(numbersInA)
[rowA colA] = find(A==numbersInC(k))
w(k,:)= [rowA , colA]
end
ans is [ 3 6]
[5 4]
[2 1]
but I need this solution::
[5 4]
[2 1]
[3 6]
Thanks in advance.

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3 Answers

Answer by Andrei Bobrov
on 25 Apr 2017
Edited by Andrei Bobrov
on 25 Apr 2017
 Accepted Answer

[l0,ii] = ismembertol(mat(:),x);
[i0,j0] = ind2sub(size(mat),find(l0));
[~,i1] = sort(ii(l0));
out = [i0,j0];
out = out(i1,:);

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Answer by Azzi Abdelmalek
on 25 Apr 2017

Use ismember function

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