Sorting 2D matrix

28 Ansichten (letzte 30 Tage)
Naga Alapati
Naga Alapati am 4 Nov. 2015
Kommentiert: dpb am 5 Nov. 2015
Hello all,
I'm troubling with sorting of the matrix. I have a matrix
A = 6.0000 18.0000 20.0000 23.0000 26.0000
3.1464 1.4302 2.9512 0.9988 2.7403
I need to sort the second row in ascending order. Simultaneously the first row also needs to be sorted according to the second row like
required matrix = 23.0000 18.0000 26.0000 20.0000 6.0000
0.9988 1.4302 2.7403 2.9512 3.1464
when I trying to use the sort command like sort(A,2), I'm getting
sort(A,2)=
6.0000 18.0000 20.0000 23.0000 26.0000
0.9988 1.4302 2.7403 2.9512 3.1464
Can you help me here. Thank you.

Akzeptierte Antwort

dpb
dpb am 4 Nov. 2015
>> sortrows(A.',2).'
ans =
23.0000 18.0000 26.0000 20.0000 6.0000
0.9988 1.4302 2.7403 2.9512 3.1464
>>
  2 Kommentare
Naga Alapati
Naga Alapati am 4 Nov. 2015
Thank you. It works
dpb
dpb am 5 Nov. 2015
Indeed! :) Converts the rows to columns since sortrows is limited to selecting columns by which to do the sorting.
The brute force way w/ sort would be two steps...
[~,ix]=sort(A(2,:)); % get the indices for sorting 2nd row
A=A(:,ix); % rearrange all by the column order

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu Shifting and Sorting Matrices finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by