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Deleting a row y from a matrix

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Cantor Set
Cantor Set on 17 Feb 2020
If I have a matrix A and I want to delete all the rows, y, in A such that y=[1 2 3];
Ex:
A=[ 1 2 3; 4 5 6; 7 8 9; 1 2 3]; y=[1 2 3];
I want to remove all the y vectors from A so that I have:
A=[4 5 6; 7 8 9];

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Answers (1)

JESUS DAVID ARIZA ROYETH
JESUS DAVID ARIZA ROYETH on 17 Feb 2020
Edited: JESUS DAVID ARIZA ROYETH on 17 Feb 2020
A(all(A==y,2),:)=[]
edit previous versions:
A(all(A==repmat(y,size(A,1),1),2),:)=[]

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Cantor Set
Cantor Set on 17 Feb 2020
Error using ==
Matrix dimensions must agree.
JESUS DAVID ARIZA ROYETH
JESUS DAVID ARIZA ROYETH on 17 Feb 2020
try now:
A=[ 1 2 3; 4 5 6; 7 8 9; 1 2 3]; y=[1 2 3];
A(all(A==repmat(y,size(A,1),1),2),:)=[]

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