How can I re-arrange a matrix?
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi everyone,
Let's assume that I have a matrix X, dimensions 10x2, a variable z of dimensions 10x1. Then I want to create an interaction term based on the sorted values of y, so that the first half gets 0 and the highest values get 1. Then I want to regress the interaction term on variable y.
x = randn(10,2);
z = randn(10,1);
y = randn(10,1);
[zsorted,zsindex]=sort(z);
zsorted(1:5)=0; zsorted(6:end)=1;
% Interaction Term
intterm = x(zsindex,:).*zsorted;
How can i transform the elements of the interaction term back to the original order of x? I could get the same results by
res = ols(y(zsindex,:), intterm);
But is there any other way to be done?
Thanks in advance.
0 commentaires
Réponse acceptée
Walter Roberson
le 8 Mai 2020
Modifié(e) : Walter Roberson
le 8 Mai 2020
z = randn(10,1);
[~,zsindex]=sort(z);
intterm = z;
intterm(zsindex(1:end/2)) = 0;
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Shifting and Sorting Matrices dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!