How to sort a two column vector

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Jórdan Venâncio Leite
Jórdan Venâncio Leite 2020년 6월 2일
댓글: Rena Berman 2020년 10월 12일
I need to order this two column vector (attached) in such a way that the first column (x) is ordered ascending and the second column follows this order. In other words, it is very important to me that the values in the second column remain the same for each value of x.
Thanks in advance.
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Stephen23
Stephen23 2020년 6월 11일
Original question by Jórdan Venâncio Leite on 2nd June 2020 retrieved from Google Cache (uploaded data could not be retrieved):
"How to sort a two column vector"
I need to order this two column vector (attached) in such a way that the first column (x) is ordered ascending and the second column follows this order. In other words, it is very important to me that the values in the second column remain the same for each value of x.
Thanks in advance.
Rena Berman
Rena Berman 2020년 10월 12일
(Answers Dev) Restored edit

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답변 (2개)

dpb
dpb 2020년 6월 2일
s=sortrows(x);

KSSV
KSSV 2020년 6월 2일
Let A be your vector of two columns.
[val,idx] = sort(A(:,1)) ; % sort the first column
iwant = A(idx,:) % arrange A in ascending order of first column

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