I have a vector A=[1 2 3] and I have a matrix B=[5 6 8,1 2 3, 9 6 5]. How can I find the row indexes? I tried find but it didn't work
One way is to use a for-loop to extract each row of matrix B
iteratively and compare each row to vector A
by using an if-statement.
A = [1 2 3];
B = [5 6 8; 1 2 3; 9 6 5];
[Number_Of_Rows,Number_Of_Columns] = size(B);
for Row = 1: Number_Of_Rows
if B(Row,:) == A
fprintf("Matching row is " + Row);
end
end
You can use the ismember function for a one-line solution to that question.
The usage will be like this:
[tf, index]=ismember(A,B,'rows');
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