MATLAB: How to delete elements which in cell

delete cell; cell edit;

Now I have DataA and DataB as below:
DataA =
     {5x1 cell}    [5x1 double]
 DataB = 
     {5x1 cell}    [5x1 double]
 DataA{1} = 
     '2015/05/04'
     '2015/05/05'
     '2015/05/06'
     '2015/05/08'
     '2015/05/09'
 DataB{1}= 
     '2015/05/04'
     '2015/05/05'
     '2015/05/06'
     '2015/05/07'
     '2015/05/08'
 DataA{2} =
    1.0e+03 *
     4.4413
     4.4799
     4.3116
     4.1979
     4.1530
 DataB{2} =
    17.2400
    16.9700
    16.3200
    16.2700
    16.4300
Now I want to find the difference between DataA{1} and DataB{1} first; then delete the different rows in DataA and DataB; For example, DataA{1} has '2015/05/07' which DataB{1} doesn't have; so DataA{1}(4) and DataA{2}(4) should be deleted; and the same other different points.
My question is how to do this?
thank you!

Best Answer

[indexA, indexB] = ismember(DataA{1}, DataB{1});
DataA{1}(indexA) = [];
DataA{2}(indexA) = [];
DataB{1}(indexB) = [];
DataB{2}(indexB) = [];
See also: setdiff.
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