How to half the value of a constant inside an iteration?

2 vues (au cours des 30 derniers jours)
Ahmad Hasnain
Ahmad Hasnain le 12 Fév 2019
Modifié(e) : Kevin Phung le 12 Fév 2019
I have an iteration loop. Inside the loop, I have a constant gamma. I want its starting value to be 10e-8. I want to half its value on every iteration (10e-4 on second iteration). How to do it?
maxiter = 100;
while iter< maxiter
gamma = 1Oe-8
f = gamma * p;
end
  4 commentaires
Ahmad Hasnain
Ahmad Hasnain le 12 Fév 2019
p is a number. It is a result of multiplication of two vectors. After multiplying gamma and p. I have to plot values of f and p at every iteration. I will plot the values of f and gamma then I will decide which value of gamma I will use. At the end, I have to use just one value of gamma but first I want to plot the values to find the suitable one.
maxiter = 100;
while iter< maxiter
p = alpha(:)'*(1-alpha(:));
gamma = 1Oe-8
f = gamma * p;
end
Ahmad Hasnain
Ahmad Hasnain le 12 Fév 2019
Sorry for not explaining it better. I want to do it like this:
10e-8 , 10e-4, 10e-2, 10e-1, 10e-0.5

Connectez-vous pour commenter.

Réponse acceptée

Kevin Phung
Kevin Phung le 12 Fév 2019
Modifié(e) : Kevin Phung le 12 Fév 2019
maxiter = 100;
iter = 1;
x = 1:1:99;
n = 8*(1/2).^x; % n = 8 , 4, 2, 0.5,...
while iter< maxiter
gamma = 10 * 10^(-n(iter)); % 10e-8, 10e-4,...
f = gamma * p;
iter = iter + 1;
end
edit: changed x to 1:1:99 instead of 1:1:100

Plus de réponses (0)

Catégories

En savoir plus sur Gamma Functions dans Help Center et File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by