How can I convert a function with multivariable input to a function with single vector input?
显示 更早的评论
Hi, I want to use fmincon, and fmincon can deal with only function with single vector input.
When my formula is as below, it works well.
fun = @(x) x(1)^2+x(2)^2;
fmincon(fun,[1,1])
However, if the function form has multiple input as below, it does not work.
Is there any way to convert the fun2 below to the function with single vector input as the example above?
fun2 = @(x,y) x^2+y^2;
fmincon(fun2,[1,1]) % this does not work
回答（1 个）
Do essentially the same thing, creating it with another anonymous function around it —
fun2 = @(x,y) x^2+y^2;
fmincon(@(b)fun2(b(1),b(2)),[1,1]) % now it works!
.
2 个评论
Junho Kweon
2022-3-31
My pleasure!
I am not aware of any. The ‘shell’ anonymous function would have to be writen specifically for each funciton.
For example, if the function needed to have extra parameters passed to it:
fun2 = @(x,y,a,b) a*x^2+b*y^2;
a = 3;
b = 11;
fmincon(@(b)norm(fun2(b(1),b(2),a,b)),[1,1]) % now it works!
There could not possibly be a general rule that would apply to all functions.
.
类别
在 帮助中心 和 File Exchange 中查找有关 Programming 的更多信息
2022-3-31
2022-3-31
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
