ERROR : Constraint function must return real value

7 次查看（过去 30 天）
Hamid
Hamid 2015-12-25
评论： Hamid 2015-12-25
I'm using genetic algorithm as my optimization solver but I keep getting this error and I don't know why.
??? Error using ==> constrValidate at 30 Constraint function must return real value.
any suggestion.

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2015-12-25
Your constraint function is returning a complex value (or possibly a NaN). Remember that the constraint function may be executed with values that are out of range, with it being the responsibility of the constraint function to say whether they are in range.
  1 个评论
Hamid
Hamid 2015-12-25
thank you Walter, my constraint is something like this :
y(1)=x(1)*a;
y(2)=x(1)*b;
c(1)=y(1)-y(2);
I set a breakpoint and c(1) will be always NaN.
what do you recommend to get rid out this error?
thank you my friend.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Genetic Algorithm 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by