How to impliment a covergence condition?

Question

m m 2019-5-20

评论： Geoff Hayes 2019-5-22

Hi,

How can i impliment a convergence condition in a loop. (the condition is A(k,i)-A(k+1,i)<=0.0001)

and with another condition :( if the condition is true continue, else replace the the last value and repeat).

for emample:

for k=1:t (time loop)

for i=1:10

A(i)=....

end

end (for k)

Answer 1

Geoff Hayes 2019-5-20

abdel - perhaps your condtion would be

if abs(A(k,i) - A(k+1,i)) <= 0.0001
    % do nothing
else
    % replace your value
end

Since we do nothing if the condition is true, we could simplify the above code to

if abs(A(k,i) - A(k+1,i)) > 0.0001
    % replace your value
end

m m 2019-5-21

i tried this, but it take a lot of time without give any result.

Geoff Hayes 2019-5-22

maybe this is the wrong condition to use then. Try stepping through the code with the debugger to understand why you might not be getting a result.