how to display coefficient and offset on graph?

I'd like to display some values to plot. What should I do ?

A=xlsread('A.xlsx');
t=A(:,1);
i=A(:,2)/10^(2);
ft = fittype('a*exp(-x/b)+c');
F=fit(t,i,ft)  
b = 1/F.b;
offset = F.c;

plot(t,i);
hold on;
plot(F)
hold  off

It's an example plot, I'd like to make a plot through codes like this figure.

Answer 1

[Vishnu Vardhan]

Hi Jaehwi

You can use text function available in MATLAB by specifying the location of text wherever you want.

txt = {'b=0.007','Offset='};

text(220,10.5,txt)

This documentation may help you further

[Jaehwi Bong]

Thank you for your answer.

I'd like to display those values on the plot from the result of fitting.

[Vishnu Vardhan]

you can replace with

txt = {'b=' num2str(b) 'Offset='}

[Jaehwi Bong]

I can't still anything on the plot.

plot(t,i);
hold on
plot(F)
hold off
xlabel('Frame number')
ylabel('Intensity')
txt = {'b=' num2str(b) 'Offset=' num2str(offset)};
text(700,10.5,txt,'FontSize',14))

It plots without text...

[Vishnu Vardhan]

It looks like your x and y co-ordinates are out of the chart for the text function.

It should be something like this

text(220,10.5*10^5,txt,'FontSize',14)

[Jaehwi Bong]

Thank you! Could you give some advice to this question?

https://ch.mathworks.com/matlabcentral/answers/467426-how-to-set-bounds-for-coefficents-when-fitting-exponential

[Vishnu Vardhan]

fitoptions should work fine , Once verify whether limits are correct.

Once go through this link , might help you in someway.