linear fit in plot

I can't get to add a linear fit line,

This is my code ma and me can be ignored it is for the other plots,

and this the graph i get, i just need to have a linear fit added into it!

Answer 1

[Image Analyst]

Add this:

hold on;
plot(x, curve, 'b-', 'LineWidth', 3);

[zakary Surprenant]

I have a stackedplot higher up in my script so the first time i run with this it works but when i rerun it it says error and that my stackedplot needs to be hold off, and idea

[Image Analyst]

I don't know why that would be true. Maybe at the beginning of your script put

close all;

So that no figure is open when you rerun it, and it will draw everything from scratch. Or you could try

cla reset;

if you wanted to keep the figure from prior runs up for some reason.

[zakary Surprenant]

Yah i added a hold off at the end and it work now, Thanks for your help!

[Adam Danz]

Isn't this the same question from a couple of days prior?

https://www.mathworks.com/matlabcentral/answers/659823-stackedplot-and-linear-fit#answer_554538