MATLAB: Remove specific rows from matrix

MATLABmatrixmatrix manipulation

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.

Best Answer

If you're looking for exact matches use
Lia = ismember(A,B,'rows')
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
LIA = ismembertol(A,B,tol,'ByRows',true)
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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