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select specific row in a matrix

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Na
Na on 15 Apr 2019
Answered: madhan ravi on 15 Apr 2019
A=[1;2;237;250;800;805];
B=[1,1,0.5;2,1,2;3,1,1;4,1,3;16,1,1;237,4,5;240,2,3;250,2,4;280,6,7;800,4,5;805,7,8];
I want to select A in B
result should be
New_B=[1,1,0.5;2,1,2;237,4,5;250,2,4;800,4,5;805,7,8];
I use this code
New_B=B(unique(A)==B(:,1),:)
but have this error
Matrix dimensions must agree.

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Accepted Answer

madhan ravi
madhan ravi on 15 Apr 2019
B(ismember(B(:,1),A),:)

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