Index a v dimensional matrix from a matrix with v columns and n rows
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hello all,
I a have u row and n column matrix, say p, in which I want to store some data. I also have a matrix ind which has per each row the indices that I need in order to write to.
For example let me se the dimension to n=2 and supposing I want to write to position ind(1,:) of P I have:
ind = [1,2;2,6];
p(sub2ind([size(p,1),size(p,2)],ind(1,1),ind(1,1))) = datum; % Ican easly loop to handle more data
While this works I am not clear how to address the possibililty of having a 50 column (i.e. n=50) ind matrix as the prototype of subs2ind requires me to specify the indexes on by one.
Does anyone know how to deal with such scenario?
0 commentaires
Réponses (1)
madhan ravi
le 30 Sep 2020
p(sub2ind(size(p), ind(:, 1), ind(:, 2)) = Dayum % where RHS should be equal to size(ind)
4 commentaires
madhan ravi
le 30 Sep 2020
Modifié(e) : madhan ravi
le 30 Sep 2020
for k = 1 : size(ind, 1)
I = num2cell(ind(k, :))
p(sub2ind(size(p), I{ : }))= datum;
end
Voir également
Catégories
En savoir plus sur Resizing and Reshaping 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!