how evaluate anonymus function with array?

Once an anonymus function is built, how do you evaluate it with an array?

My solution does work, but it doesnt solve the answer, because I use a trick to convert the array into a string, and then eval this:

% May the handle function (or anonymus) for example
Fopt=@(x,y) sin(x).*sin(y);
x0=[1,1];

N=length(x0);

str=sprintf('%f,',x0(1:end-1));
str=sprintf('%s%f',char(str),x0(end))
eval(['Fopt(',str,')'])

My desire is to do this just like:

Fopt(x0)

Thanks

Answer 1

[Matt J]

You would not write the anonymous function to take separate scalar arguments. You would write it to accept a single vector argument and use vector operations to get the result,

Fopt=@(x) sin(x(1)).*sin(x(2));

[Matt J]

Or, you could handle vectors x of arbitrary length with

 Fopt=@(x) prod(sin(x));

Answer 2

[Juan]

Thanks! I guessed it could not be hard.

I shall share some code it may help someone:

METOD 1, using multiples variables, each one is an array, in anonymus function:

clc,clear all,close all
Fopt=@(x,y) sin(x).*sin(y);
x0=[1,1];
x=1e1*[(-x0(1)),x0(1)];
x=linspace(x(1),x(2),1e2);
y=1e1*[(-x0(2)),x0(2)];
y=linspace(y(1),y(2),1e2);

[X,Y] = meshgrid(x,y);
f=Fopt(X,Y);
plot3(X,Y,f,'.','MarkerSize',4.55),grid on

% surf y mesh
figure(2)
surf(x,y,f),grid on
figure(3)
mesh(x,y,f);hold on,plot3(X,Y,f,'.','MarkerSize',4.55),grid on,hold off

METOD 2, using one variable , a matrix of variables , like the Matts answer,in anonymus function:

    clc,clear all,close all
    Fopt=@(x) sin(x(:,:,1)).*sin(x(:,:,2));
    x0=[1,1];
    a=1e1*[(-x0(1)),x0(1)];
    x(:,1)=linspace(a(1),a(2),1e2);
    b=1e1*[(-x0(2)),x0(2)];
    x(:,2)=linspace(b(1),b(2),1e2);

    v(:,:,1)=repmat(x(:,1),[1,length(x(:,1))])';
    v(:,:,2)=repmat(x(:,2),[1,length(x(:,2))]);
    a=x(:,1);
    b=x(:,2);
    x=v;
    plot(x(:,:,1),x(:,:,2),'.')

    f=Fopt(x);
    plot3(x(:,:,1),x(:,:,2),f,'.','MarkerSize',4.55),grid on

    % surf y mesh

    figure(2)
    surf(a,b,f),grid on
    figure(3)
    mesh(a,b,f),hold on,plot3(x(:,:,1),x(:,:,2),f,'.','MarkerSize',4.55),grid on,hold off

Suggestions and corrections of code will be thankful received.