2 Errors: Conversion to double from function_handle is not possible and attempt to reference field of non-structure array.

 What mistake am I making here?

clc

x0 = [0.01, 1, 10 + 273.15, 8, 1];
options = optimset('PlotFcns',@optimplotfval);
fitnessfcn = @(x)Lobo(x(1), x(2), x(3), x(4), x(5));
[X, fval] = gamultiobj(fitnessfcn, 5, [], [], [], [], [], [], options);
X
disp(X);

d0 = 0.01:10;
Qr{:,1} = @(x)Lobo(x(1), x(2), x(3), x(4), x(5));
plot (d0,Qr{:,1});
xlabel('(d0)');
ylabel('flux (qr)');

[KSSV]

What is this?

Qr{:,1} = @(x)Lobo(x(1), x(2), x(3), x(4), x(5));

[Stephen23]

See earlier questions:

https://www.mathworks.com/matlabcentral/answers/386804-multi-variable-fminsearch-not-enough-input-arguments

https://www.mathworks.com/matlabcentral/answers/386602-optimization-need-to-to-optimize-q

@Devdatt Thengdi: the function plot plots numeric data. The variable Qr is cell array or table containing a function handle. If you want to use plot then you will need to generate numeric data first, else you could use ezplot or fplot to plot the function.

[Stephen23]

@Devdatt Thengdi: call that function! If the function has been written using vectorized code then simply call it with a vector of the independent variable values. If the function is not vectorized use a loop or arrayfun.

You might like to try using ezplot first.

[Devdatt Thengdi]

I used fplot. New error:

Attempted to access x(2); index out of bounds because numel(x)=1.