May I ask how to solve my problem with the nan value?

[Yikxinxin]

May I ask how to solve my problem with the nan value?
Each parameter in the outer objective function is a fixed value, but the value of the function displays nan value.

Give the result as follows：

I called one of the values in the formula and had a result, but directly outputting the value of the formula displayed nan value.
The result of t=1：

I don't know how to solve it, I hope to receive your help. Thank you very much!

[johanlofberg]

my guess R is initially a double and then you start trying to insert sdpvar expressions into it
https://yalmip.github.io/naninmodel

[Yikxinxin]

Thank you for your reply！
I omitted the previous step and directly defined the outer objective function OI, but the result is still NAN.

And, I will use the method you guided to represent the inner function. First, create a zero matrix, and then assign F (t, i) to it, and the result is still NAN.

May I ask how to express the objective function?

[johanlofberg]

It's explained in the link. Don't assign into doubles, create by concatenation instead.

(and the code now is just a complete failure, as you keep clearing F inside the loop so even if it was possible to insert sdpvars into doubles, the code would fail)

[Yikxinxin]

Thank you very much for your patient answer！