Sort rows without sortrows function in MATLAB

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Noor Fatima
Noor Fatima 2022-10-13
评论： Noor Fatima 2022-10-13
The following is the data set say A
A =
9361 8366
9361 28317
9364 27948
9364 8735
9365 29127
9365 7556
9366 1870
9366 34813
9367 1825
9367 34858
9368 15168
9368 21515
if first coordinate is same then I want to arrange w.r.t to ascending order of second coordinate.
It can be done with, sort and sortrows command like
B = sortrows(A);
But need some other approach, please.
The output should be
B =
9361 8366
9361 28317
9364 8735
9364 27948
9365 7556
9365 29127
9366 1870
9366 34813
9367 1825
9367 34858
9368 15168
9368 21515

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回答（1 个）

KSSV
KSSV 2022-10-13
Ran in:
A = [9361 8366
9361 28317
9364 27948
9364 8735
9365 29127
9365 7556
9366 1870
9366 34813
9367 1825
9367 34858
9368 15168
9368 21515];
[val,idx] = sort(A(:,1)) ;
iwant = A(idx,:)
iwant = 12×2
9361 8366 9361 28317 9364 27948 9364 8735 9365 29127 9365 7556 9366 1870 9366 34813 9367 1825 9367 34858
  2 个评论
Noor Fatima
Noor Fatima 2022-10-13
@KSSV Thank you very much for the comment.
But I can't use any builtin function, i.e., sort or sortrows
Is there any other way please?
Noor Fatima
Noor Fatima 2022-10-13
Furthermore, sorry the output is not correct it is the same as input.

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