sort a 2x4 matrix
1 回表示 (過去 30 日間)
古いコメントを表示
I have 2x4 matrix and would like to sort the first row from smallest number to largest number, but I would also like the second row to follow along.
V=[9 3 5 2; 30 49 22 354]
Iwant=[2 3 5 9; 354 49 22 30]
0 件のコメント
採用された回答
Adam Danz
2019 年 5 月 9 日
[~, sortIdx] = sort(V(1,:));
Iwant = V(:,sortIdx);
2 件のコメント
Adam Danz
2019 年 5 月 9 日
編集済み: Adam Danz
2019 年 5 月 9 日
Glad I could help!
Star Strider also had a good idea to use sortrows(). I did a speed test between these two solutions and found that the one I proposed is ~2.7 times faster on average (100,000 repetitions of each; p<0.0001 wilcox rank sum test).
その他の回答 (1 件)
Davide Figoli
2019 年 5 月 9 日
you could try doing:
V=[9 3 5 2; 30 49 22 354];
V_orderd=[];
V_ordered(1,:)=sort (V(1,:));
V_ordered(2,:)=sort(V(2,:),'descend');
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Shifting and Sorting Matrices についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!