Remove specific rows from matrix
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I have two matrices shown below:
A =
0.2247 0.5845
0.4942 0.7303
0.5000 0.5000
0.6440 0.5408
0.6210 0.2230
0.6210 0.2230
0.2869 0.3921
1.0000 1.0000
B =
0.2247 0.5845
0.4942 0.7303
0.6440 0.5408
0.6210 0.2230
0.2869 0.3921
I would like to delete the rows in matrix A that match the rows from matrix B. How would I go about doing this?
Thanks in advance.
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Accepted Answer
Adam Danz
on 23 Nov 2019
Edited: Adam Danz
on 24 Nov 2019
If you're looking for exact matches use
However, with floating decimals it's likely that your variable values may differ slightly such as 0.28690123 vs 0.28690131. If you'd like that to be considered a match, use
To identify and remove the first match of B within A,
removeRowIdx = cell2mat(arrayfun(@(i) find(ismember(A,B(i,:),'rows'),1,'first'),(1:size(B,1))','UniformOutput',false));
A(removeRowIdx,:) = []
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