How to get the probability density function of my data set

[jpython]

Hi,

This is my first post here so please be kind to me

I have a data set that is a time-series of stock returns. I am able to plot the probability density function (PDF) using a library such as Matplotlib, however what I really want is the underlying function/formula.

Is this possible to get somehow? Surely the plot has used some kind of formula and I just want to see what that formula looks like.

Best regards,
jpython

[Larz60+]

the source code is available here: https://github.com/matplotlib/matplotlib
the documentation is very good and may answer your question