Remove element from sparse matrix
13 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hey, I have a question. I have a sparse matrix:
W = [6 7 9 5 10];
S = [1 1 2 3 4];
D = [2 3 4 4 1];
DG = sparse(S,D,W);
After some testing, it turns out I have to remove (1,3) 7 (I have only the digits from S - 1 and D - 3 though, and not from W - 7). How do I remove that row directly from the sparse matrix without using:
W(i) = [];
S(i) = [];
D(i) = [];
Please help! :D
0 Kommentare
Antworten (1)
Walter Roberson
am 3 Mär. 2016
DG(S(i), D(i)) = 0;
Depending on what you are doing it might also make sense to remove from S and D and W, but doing so would not in itself affect DG.
Siehe auch
Kategorien
Mehr zu Sparse Matrices finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!