Matlab code fitting a line to a histogram

[matt_crouch]

Im analyzing some data from a previous student I am trying to plot a line of best fit over the histogram and hense find the value of the coefficiants

the files had to be loaded as -ascii so this is the code i have typed so far

x=load('filename.mat','-ascii'); mean(x); hist(x,300)

this then produces the graph how do i add a best fit line to this. I have the curve fit toolbox but don't seem to be able to use this to give me a plausable best fit. I am using Matlab 2010

any help would be appreciated
:)

 

[Valkarie]

You can use the polyfit command to fit a line of best fit. You will need to specify the degree of the polynomial you want to fit. For example: coefs = polyfit(x, y, 2); % Fit a second-degree polynomial to the data. yfit = polyval(coefs, x); % Compute y values for the fitted polynomial. plot(x, yfit) % Plot the fitted polynomial. This will give you the coefficients of the polynomial and allow you to plot the line of best fit on top of your histogram.