How to sort the rows of an array according to another vector?

4 views (last 30 days)
If I have an array D:
D=[1 1 0 1 0 1; 4 6 7 8 9 9; 1 1 1 2 3 4]; b=[2 44 0];
each row in D crossponds to a number in b:
the first row crossponds to 2
the second row crossponds to 44
the third row crossponds to 0
I want to sort b in a descending order and according to the sorted vector b the rows of the array D are arranged such that
D=[4 6 7 8 9 9; 1 1 0 1 0 1; 1 1 1 2 3 4]; bb=sort(b,'descend');

Accepted Answer

Star Strider
Star Strider on 18 Feb 2020
Try this:
D=[1 1 0 1 0 1; 4 6 7 8 9 9; 1 1 1 2 3 4];
b=[2 44 0];
[bb,idx] = sort(b,'descend');
Out = D(idx,:)
producing:
Out =
4 6 7 8 9 9
1 1 0 1 0 1
1 1 1 2 3 4

More Answers (0)

Categories

Find more on Matrices and Arrays in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!