Dear SymPy Community,

 I am pleased to present a next open source Python Project of Interactive 
Calculus that uses SymPy.

https://github.com/zolabar/trendPy

TrendPy is a Python package tailored to easily perform powerful regressions 
with linear, polynomial and sinusoidal ansatzes. Further a three-parameter 
"free" regression with user ansatz is possible. The free regression part is 
based on SymPy!

The TrendPy packages is object oriented features classical aspects as 
returning the coefficients, coefficient of determination of the training 
data.

Further, a web application is provided, which allows to apply different 
regression models on data uploaded by the user, it extends some features of 
Excel's trendline.

https://trendpy.herokuapp.com/

or

https://mybinder.org/v2/gh/zolabar/trendPy/HEAD?urlpath=voila%2Frender%2F/trendpy_webapp.ipynb

Test-Data in

https://github.com/zolabar/trendPy/tree/main/data

This project is based on NumPy, SciPy Jupyter Notebook, Plotly and SymPy.

It is yours to discover! Feedback is always welcome.

The project is uploaded to Zenodo and can be cited as

Lauer-Bare, Z., & Wirth, M. (2022). trendPy -  Time Series Regression with 
Python (Version v1.0.1) [Computer software]. 
https://doi.org/10.5281/zenodo.7009281

Best Wishes,

Zoufiné


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