Error: Operator '-' is not supported for operands of type 'function_handle'.
조회 수: 167 (최근 30일)
이전 댓글 표시
Hello, i have the following Code:
f1 = [-1,-1];
f2=@(x)-10*x(1)+x(1)^2-4*x(2)+x(2)^2;
A = [3 1;
2 1 ;
1 2];
b = [12; 9; 12];
z = [0,0];
d = [-1,0];
Method(f1,f2,A,b,z,d);
function [x,alpha] = Method(f1,f2,A,b,z,d)
f =@(x)-x(size(A,2)+1);
x0 = (zeros(1,size(A,2) + 1));
lb = [(zeros(1,size(A,2))),-Inf];
if (~isempty(f1))
Anew = [f1,-d(1)];
Anew(2:size(A,1)+1,1:size(A,2)) = A;
bnew = [z(1);b];
c1 =@(x) f2 - d(2)*x(size(A,2)+1) - z(2);
(else ... %in this case Anew,bnew and c1 would look different)
end
nonlincon = @constr;
function [c,ceq] = constr(x)
c = c1;
ceq = [];
end
[x,alpha]=fmincon(f,x0,Anew,bnew,[],[],lb,[],nonlincon);
end
This gives me the following error: Operator '-' is not supported for operands of type 'function_handle'.
I know that it is because of the line "c1 =@(x) f2 - d(2)*x(size(A,2)+1) - z(2);". Does someone knows how i could solve this problem? Thanks.
댓글 수: 2
David Hill
2022년 2월 10일
A general description of what you are trying to do with inputs and expected outputs would be helpful. I cannot follow your code (lots of problems).
채택된 답변
Star Strider
2022년 2월 10일
To be used in calculations, functions must be evaluated, and that means providing them with an argument.
See if this provides the desired result:
c1 =@(x) f2(x) - d(2)*x(size(A,2)+1) - z(2);
I am confindent that will work and not throw the previous error. I have not tested the code with this correction.
.
댓글 수: 6
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Get Started with MATLAB에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!