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

1 次查看（过去 30 天）
chaker ben salem
chaker ben salem 2022-5-21
评论： Seth Furman 2022-5-30
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

请先登录，再回答此问题。

采纳的回答

Jan
Jan 2022-5-21
[~, index] = sort([pop.F]);
pop2 = pop(index);
  2 个评论
chaker ben salem
chaker ben salem 2022-5-21
i was thinking it could be done within the same table but that works perfectly.
thank you,
Seth Furman
Seth Furman 2022-5-30
Ran in:
It's also worth mentioning that we can convert the struct array to a table using struct2table and sort the rows using sortrows.
https://www.mathworks.com/help/matlab/ref/struct2table.html
https://www.mathworks.com/help/matlab/ref/double.sortrows.html
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

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Shifting and Sorting Matrices 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by