Formatting the fit function

I am using the fit function and plotting it on a graph with the code below:

fitting = fit(epsilon,load,'poly2');

plot(fitting,epsilon,load);

I am wondering how to edit the linewidth of the fitted line, as there is an error when adding 'linewidth' in the plot function. It also goves an error if I try to use 'markersize.

Any help on how to format/style this would be great.

Answer 1

[Chris]

epsilon = (0:0.2:5)';
load = 2*exp(-0.2*epsilon) + 0.5*randn(size(epsilon));
fitting = fit(epsilon, load, 'poly2');
plots = plot(fitting, epsilon, load)

plots = 
  2×1 Line array:

  Line    (data)
  Line    (fitted curve)

plots(2).LineWidth = 4;
plots(1).MarkerSize = 8;