Sort a table with different orders for different columns
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Assume table A:
A = [
'k' 2 4
'a' 3 8
'a' 4 5
'k' 2 2
'a' 3 16
'k' 9 3
'k' 9 8
'a' 4 6
]
If i use sortrows(A) every column is sorted with ascending order:
A = [
'a' 3 8
'a' 3 16
'a' 4 5
'a' 4 6
'k' 2 2
'k' 2 4
'k' 9 3
'k' 9 8
]
Is there a way to sort rows, so first and second column is sorted with ascending order, but third one with descending? I want to get something like this:
A = [
'a' 3 16
'a' 3 8
'a' 4 6
'a' 4 5
'k' 2 4
'k' 2 2
'k' 9 8
'k' 9 3
]
3 commentaires
Cris LaPierre
le 31 Mar 2021
Do you want the columns sorted indepently? Or do you want to sort first by column 1, then column 2, then column 3?
Karol Buchajczuk
le 31 Mar 2021
Star Strider
le 31 Mar 2021
It would likely be necessary to sort each column independently, then concatenate the results into a new matrix.
Réponse acceptée
Plus de réponses (1)
David Hill
le 31 Mar 2021
You can't have a matrix with characters and numbers. But if you convert the characters to double, then:
A=[sort(A(:,1)),sort(A(:,2)),sort(A(:,3),'descend')];
1 commentaire
Karol Buchajczuk
le 31 Mar 2021
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