Effacer les filtres
Effacer les filtres

How to sort a dot indexed array by rows based on one column

3 vues (au cours des 30 derniers jours)
chaker ben salem
chaker ben salem le 21 Mai 2022
Commenté : Seth Furman le 30 Mai 2022
i made a dot indexed array called "pop" using repmat like the following
pop.X = [];
pop.V = [];
pop.F = [];
pop.pBestX = [];
pop.pBestF = [];
pop = repmat(pop, N, 1)
and wanted to sort it by rows based on the columne "pop.F"
what i mean is when pop.F(3) change position to pop.F(5) all other pop.X/pop.V in the same row will follow it
the pop array i have looks like this one
if there's a better way to make this kind of table and sort it, it would be greatly apreciated

Réponse acceptée

Jan
Jan le 21 Mai 2022
[~, index] = sort([pop.F]);
pop2 = pop(index);
  2 commentaires
chaker ben salem
chaker ben salem le 21 Mai 2022
i was thinking it could be done within the same table but that works perfectly.
thank you,
Seth Furman
Seth Furman le 30 Mai 2022
It's also worth mentioning that we can convert the struct array to a table using struct2table and sort the rows using sortrows.
s = [];
s(1).a = [1 2 3 4];
s(1).b = 2;
s(2).a = [5 6 7 8];
s(2).b = 1;
t = struct2table(s)
t = 2×2 table
a b ________________ _ 1 2 3 4 2 5 6 7 8 1
sortrows(t,"b")
ans = 2×2 table
a b ________________ _ 5 6 7 8 1 1 2 3 4 2

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur Shifting and Sorting Matrices dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by