How do I access the nu's from a fitted probability distribution?

So I created a vector of random numbers from a t-distribution with nu/degrees of freedom = 30, and I want to fit the distribution and basically find the estimated nu's for different sample sizes. However, when I use the fitdist function, I am not sure how to access the the nu that it fits. For example, with the following code:

        random_dist = trnd(30, n, 1);
        t_dist = fitdist(random_dist, 'tLocationScale')

I get an ouput like:

t_dist = 

tLocationScaleDistribution

t Location-Scale distribution
     mu = -0.000195642   [-0.00659519, 0.00620391]
  sigma =      1.00619   [0.999327, 1.01311]
     nu =      36.7948   [30.3379, 44.626]

and I don't know how to access that nu = 36.7948.

Thanks.

Answer 1

[Star Strider]

The output of fitdist is a structure, so you can get any of the results it calculates by addressing them as structure elements:

nu_calc = t_dist.nu

Answer 2

[Walter Roberson]

t_dist.nu

or you might need

get(t_dist,nu)

if your MATLAB is sufficiently old.

http://www.mathworks.com/help/stats/prob.tlocationscaledistribution-class.html

Note: this is not a structure, it is an object.