Relative Ranking of position in an array
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Mick Stukes
le 6 Mai 2021
Réponse apportée : Bruno Luong
le 7 Mai 2021
Hi!
I have a large array with 10 rows of numerical data. I am trying to find an 'ordering' by size of all the elements. I turned the raw data into an indexed array through maxk:
[M10,I10]= maxk(dgoutput,10,1)
And my I10 array has the row number for the elements in order from greatest to least (1-10). It looks like this:
1 2 1 1 1 2 1 1 2
2 1 3 6 3 1 3 3 1
4 3 4 3 2 3 4 2 3
3 4 2 7 4 6 2 5 4
5 5 5 5 6 7 5 4 5
8 8 6 4 5 4 6 6 7
9 7 7 2 7 5 7 9 6
7 6 9 9 8 9 10 8 8
6 9 8 8 9 8 8 7 9
10 10 10 10 10 10 9 10 10
And I'm trying to find a way to count the occurrences when one number occurs in a higher row than another. As an example a
Count (1>2) would return 6 since there are 6 columns where 1 is above 2.
and Count(2>1) would return 3, etc.
Any help would be appreciated!
0 commentaires
Réponse acceptée
Plus de réponses (1)
Bruno Luong
le 7 Mai 2021
I10=[1 2 1 1 1 2 1 1 2
2 1 3 6 3 1 3 3 1
4 3 4 3 2 3 4 2 3
3 4 2 7 4 6 2 5 4
5 5 5 5 6 7 5 4 5
8 8 6 4 5 4 6 6 7
9 7 7 2 7 5 7 9 6
7 6 9 9 8 9 10 8 8
6 9 8 8 9 8 8 7 9
10 10 10 10 10 10 9 10 10];
[r1,~]=find(I10==1);
[r2,~]=find(I10==2);
count1gt2 = sum(r1<r2)
count2lt1 = sum(r2<r1)
0 commentaires
Voir également
Catégories
En savoir plus sur Shifting and Sorting Matrices dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!