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Colton Holybees
@coltonholybees 18, Aug 2023 12:00 AM
Select only a specific number of rows fulfilling a condition in MATLAB
Select only a specific number of rows fulfilling a condition in MATLAB
Assume you have the following data matrix:
A =
1 11 22 33
44 13 12 33
1 14 33 44
Delete all rows of this matrix that don't accomplish the condition A(:, 4) == 33 and get the matrix of this form which only selects these rows:
A_new =
1 11 22 33
44 13 12 33
answers 1
Answer 1
Chance Boorman
@boormanchance 31, Aug 2023 10:34 AM
Using logical indexing, this can be achieved as follows
A = [
1 11 22 33
44 13 12 33
1 14 33 44
];
idx = ( A(:,4)==33 );
A_new = A(idx,:)
Output:
A_new =
1 11 22 33
44 13 12 33