How to convert an optimization variable to symbolic variable?

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Hi everyone,
I need to convert an optimization variable that created by 'optimvar' command to a symbolic variable. I couldn't find any converter funtion for this one. I have a polynom consists of optimization variables, and i want to replace found values of some optimization variables in this polynom. If you know any other method for doing this, please let me know.

Accepted Answer

Walter Roberson
Walter Roberson on 9 Aug 2022
It does not appear to be documented, but use optimexpr2fcn() on the optimization expression, to get back a function handle to a .m that it will write in your current directory. The resulting function will expect only a single input that is a vector, all of the inputs concatenated together.
For example,
x = optimvar('x',3,2);
y = optimvar('y',1,2);
expr = sum(x,1) - 2*y;
syms X [3 2]
syms Y [1 2]
h = optimexpr2fcn(expr)
h = function_handle with value:
@exprfcn
h([X(:); Y(:)])
ans = 
  1 Comment
B. Berk
B. Berk on 9 Aug 2022
I did a lot of research, however, couldn't see this optimexpr2fcn function. Looks like it wil solve my problem. If I can't solve it, I'll write here again if you don't mind.
Sincerely thanks.

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More Answers (1)

Matt J
Matt J on 9 Aug 2022
You can use the evaluate() command to substitute in values.

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