sort two matrix
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hi i have two matrix X,Y (same size) i want to sort X and the same time i want to take the matrix Y with the same changes as X
example:
X=[4,7,1,9] Y=[32,6,4,21]
after sort
X=[9,7,4,1] Y=[21,6,32,4]
thanks for your time!!!!
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Thomas
2012년 5월 31일
[X,index]=sort(X,'descend')
Y=Y(index)
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Hugo Matias
2018년 11월 30일
How do you do the same thing but without the descend part
i.e:
X=[4,7,1,9] Y=[32,6,4,21]
after:
X=[1,9,4,7] Y=[4,21,32,6]
Steven Lord
2018년 11월 30일
Neither your new X nor your new Y are sorted, so I assume you have a known vector of indices you used to reorder / "shuffle" one of those arrays. If so, use the same vector of indices to reorder the other array in the same way. In the example below, ind is the known vector of indices.
X = [4 7 1 9];
Y = [32, 6, 4, 21];
ind = [3 4 1 2];
X2 = X(ind)
Y2 = Y(ind)
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