MATLAB: How to find the position of specific entry in a Matrix

location of entriesmatrixmatrix array

I have a matrix like

A=[3 2 1;3 1 2;2 3 1];

I want to find the position of 2 in each row

I need

1 2

2 3

3 1

which indicates that at first row it is in second column, at second row it is is in third column and at third row it is in first column,

Thanks

Best Answer

A = [3 2 1;3 1 2;2 3 1];
[r, c] = find(A == 2);
output = [r, c]

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MATLAB: How can i delete every row with the same number

Try this:

C =[...
     2     4
     2     4
     2     2
     2     2
     3     1
     3     4
     2     4
     3     4
     4     3]
 % Delete row if first element in a row
 % equals the second element. (Must be integers).
 rowsToDelete = C(:,1)==C(:,2)
 C(rowsToDelete,:) = []

MATLAB: Find the number of rows and columns of non-zero number from certain row.

You can do something like this

[r, c] = find(Matr(1:6,:));
res = [r c]
%res =
%
%     3     1
%     5     1
%     6     2

Best Answer

Related Solutions

MATLAB: How can i delete every row with the same number

MATLAB: Find the number of rows and columns of non-zero number from certain row.

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