Whike loop does not work and there is not error message
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I am trying to do a loop until the last value and the value before the last one are equals. I run the code without the while (manually) and does work alright but when I run with while doesn't work. In this case the convergence is in 11 but if I change the data could be in 100 or maybe more.
If you can help me I would really appreciate. Thanks in advance.
P = [0.5,0.3,0.2;0.3,0.3,0.4;0.1,0.5,0.4];
pi=2;
py=P(pi,:);
TM=[]
kk=1
pky_new=py*P^kk
pky=[0 0 0]
while (pky_new(1,1)-pky(1,1))<0.000001
kk=kk+1;
pky=pky_new;
pky_new=py*P^kk;
TM=[TM;pky_new]
end
disp(['converge at y + ' num2str(kk)])
2 Comments
Accepted Answer
Rik
on 7 Aug 2018
You switched the condition: it is false on the first iteration and true when your loop should exit, which is the reverse from what it should be.
Also, in general you want a difference, so you should use abs. I don't understand the true goal of your code, so I don't know if that is what you should do.
P = [0.5,0.3,0.2;0.3,0.3,0.4;0.1,0.5,0.4];
pi=2;
py=P(pi,:);
TM=[];
kk=1;
pky_new=py*P^kk;
pky=[0 0 0];
while (pky_new(1,1)-pky(1,1))>0.000001% or maybe while abs(pky_new(1,1)-pky(1,1))>0.000001
kk=kk+1;
pky=pky_new;
pky_new=py*P^kk;
TM=[TM;pky_new];
end
disp(['converge at y + ' num2str(kk)])
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