Select values of a matrix given a matrix of indices?
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Hi, suppose we have a matrix
A=rand(10,10);
Now I have two matrices:
x=[2,3;5,7]; y=[4,6;1,2];
Now I want to create a new matrix
B
where
B(1,1)=A(2,4); B(1,2)=A(3,4);
B(2,1)=A(5,1); B(2,2)=A(7,2);
is there any fast way to do this?
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