how can i make a general matrix?
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
i asked this question many times but still have a problem....someone help me please i need answer as soon as possible...
2 commentaires
John D'Errico
le 8 Jan 2022
Modifié(e) : John D'Errico
le 8 Jan 2022
I see you still have problem. However, the issue is you need to EXPLAIN clearly what you need. If you cannot explain what your goal is, how can you expect help?
Is this matrix symmetric? That is, is it true that x(i,j) == x(j,i) always? The rule for x12 that you show would seem to say that is true.
Would x(2,2) be the sum of 5 elements? Thus... sum(L([1 4 5 6 7],4))?
Finally, it really helps if you post actual code, rather than a PICTURE of code. For example, while I can look at the matrix L, I cannot paste it into MATLAB.
Réponse acceptée
Torsten
le 8 Jan 2022
Modifié(e) : Torsten
le 8 Jan 2022
function main
L = [1 2 0.1 0.2 0.02; ...
1 4 0.05 0.2 0.02; ...
1 5 0.08 0.3 0.03; ...
2 3 0.05 0.25 0.03; ...
2 4 0.05 0.1 0.01; ...
2 5 0.1 0.3 0.02; ...
2 6 0.07 0.2 0.025; ...
3 5 0.12 0.26 0.025; ...
3 6 0.02 0.1 0.01; ...
4 5 0.2 0.4 0.04; ...
5 6 0.1 0.3 0.03];
nl = L(:,1);
nr = L(:,2);
x = L(:,4);
n = numel(x);
Nb = 6;
mat = zeros(Nb,Nb);
n = numel(x);
for i = 1:Nb
for j = 1:Nb
logic = zeros(n,1);
if i==j
for k = 1:n
logic(k) = nl(k)==i || nr(k)==i;
end
else
for k = 1:n
logic(k) = (nl(k)==i && nr(k) ==j) || (nl(k)==j && nr(k)==i);
end
end
mat(i,j) = sum(x(logic==1));
end
end
mat
end
3 commentaires
Plus de réponses (1)
Voir également
Catégories
En savoir plus sur Logical 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!