how to get outputs from normal distribution fitdist to display in my plot title using sprintf

trying to use sprintf to plot the values of mu and sigma in my title for my histogram plot. Mu and sigma are the outputs from the pd=fitdist(data,'normal'). Any suggestions appreciated! Thanks!

this is what I have;

histfit(data,20)

pd = fitdist(data,'normal')

xlabel('Energy in eV')

ylabel('Count Rate')

Answer 1

[Image Analyst]

Try this:

data = randn(5000, 1);
histfit(data,20)
pd = fitdist(data,'normal')

pd = 
  NormalDistribution

  Normal distribution
       mu = 0.0209271   [-0.00653814, 0.0483923]
    sigma =  0.990638   [0.971596, 1.01045]

fontSize = 18;
grid on;
caption = sprintf('Mu = %f.  Sigma = %f', pd.mu, pd.sigma);
title(caption, 'FontSize', fontSize)
xlabel('Energy in eV', 'FontSize', fontSize)
ylabel('Count Rate', 'FontSize', fontSize)

[Kay]

THANK YOU!!!

[Image Analyst]

No problem. Thanks for accepting. 🙂

[Kay]

I have a follow up question, I've made 3 plots i my script, which i've attached. Now that i'e added the

caption = sprintf('Mu = %f. Sigma = %f', pd.mu, pd.sigma);

title(caption, 'FontSize', fontSize)

i'm getting the error "Index exceeds the number of array elements. Index must not exceed 33.

Error in project2 (line 9)

title('X-ray detection events')"

Why has the changes i made to the 2nd figure impacted my first figure? I havent changed anything for that one?

Thanks!

[Image Analyst]

You forgot to attach 'data01.txt' so I can't run your code.

Line 9 is

title('X-ray detection events')

and would not throw that error because nothing is being indexed, unless you have called some variable "title" in some other script and it's still hanging around in the base workspace. Try calling

clear all

as the first line of your script to get rid of any prior variables you don't need.

[Kay]

Oh sorry about that! I think i figured it out, I restarted my computer and that seemed to help. I'll remember the clear all for next time. I think I need to do some updates to my computer, matlab has been glitchy for a few days. Thanks again for your help!