SciPy curve_fit: What is 'pcov'?

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In this video I show what errors on optimal parameters obtained using a curve fit actually mean. My video on curve fitting can be found here:

Tutorial Playlist:

Code:

Discord:

[henryclay]

I'm learning about probability density functions (pdf) and cumulative distribution functions (cdf) this week in class. I didn't realize how applicable statistics is to programming.

[robertoparreiras]

Without any doubt, the best videos on scientific applications of Python. Thank you very much.

[slvfelix]

Great explanation. Also love the basic ones such as the class video from zero. Please do more of those!

[frankkoslowski]

It was discovered that plt.errorbar() does not tolerate any native yerr_data!
Thus, your code needed to be modified as seen here:
yerr_data =
YERROR MUST ALWAYS BE POSITIVE TO AVOID TRACEBACK ERRORS!

[martinzapata]

Great explanation! Just in time before a lab session where I’ll have to do nonlinear fitting

[SubhadipDas]

You should do a tutorial on Lmfit. It's really advanced and built on top curve fit.

[GabrieleIuzzolino]

Thank you! Your tutorials are very clear and useful!

[StasFainer]

Great content! Hope that you'll continue making more of these videos :)

[matteopiccioni]

Nice
1. what if using the KDE instead the χ^2 to find the pdf of a set of data, sometimes distributed differently and with some "outliers"?
2. Why not to use the sklearn to fit quite automatically (without specifying the curve fit equation ) a set of data?

[divyanshshrimali]

It raised an error even for error bar graph saying: ValueError: 'yerr' must not contain negative values

[MrRKK]

Awesome, simply a bull's eye explanation

[sivadeepak]

Can you please do a video on linear programming in python with PULP library !!!

[sirlimonada]

What if I don't have an error for each point?

[phunmaster]

at 11:01, are the parameters in the formula for a normal distribution flipped?

[ScienceVocalsMusic]

Wait why was i expecting a bird to appear?

[gabrielzinatorosa]

I Imagine Billy trying to do this. Poor Billy. Not that I would do much better before watching the video 😅