How can I sort the rows of a matrix in descending order in MATLAB 7.0.1 (R14SP1)?
14 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I have a matrix A defined as follows:
A = [7 1;2 4;5 1;3 2];
I would like to sort the rows of A in descending order along the first column.
Risposta accettata
MathWorks Support Team
il 21 Gen 2010
The SORTROWS function offers the ability to sort the rows of a matrix in descending order by specifying a negative value for the appropriate column in the second argument to the function.
For example, the following call to SORTROWS will sort the rows of matrix A by descending order of column 2 and then by ascending order of column 1:
B = sortrows(A,[-2 1])
B =
2 4
3 2
5 1
7 1
This feature is documented in the function reference for SORTROWS in the documentation in MATLAB versions 7.1 (R14SP3) and higher. For previous versions you may consult the file help content which contains this information by executing the following at the MATLAB prompt:
help sortrows
0 Commenti
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Shifting and Sorting Matrices in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!