MATLAB: Not enough input arguments

error

I get this error for a simple code

function f = fun(x)
f =2*x;
end

please help me

Best Answer

You have to call your function as:

x = 42;
y = fun(x);

Simply using the ‘Run’ option by clicking the green arrow in the Editor will not work.

Related Solutions

MATLAB: Not Enough Input Arguments in fsolve

function myProblem
 options = optimset('display','off')
 x = fsolve(@fun,[2 3.5],options)
 X = x(1)
 Y = x(2)
    function f = fun(x)
    f(1) = (x(1)-4)^2 +(x(2)-4)^2 - 5;
    f(2) = x(1)^2 + x(2)^2 - 16;
    end
end

Running gives the following result

>> myProblem
x =
    1.8058    3.5692
X =
    1.8058
Y =
    3.5692

MATLAB: Nonlcon : Too many input arguments.

I think the problem is that FMINCON thinks your fixed "data" is meant to be passed both to meancov and covposdef. If you intend only to pass it to meancov, call FMINCON using the following more modern syntax

theta = fmincon(@(x) meancov(x,data),iv,[],[],[],[],lb,ub,@covposdef,options);

Best Answer

Related Solutions

MATLAB: Not Enough Input Arguments in fsolve

MATLAB: Nonlcon : Too many input arguments.

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