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README.md

Build Status PyPI version Downloads Python Versions DOI DOI contributions welcome

Pymer4

❗️⚠️ Contributors wanted ⚠️❗️

Pymer4 is a statistics library for estimating various regression and multi-level models in Python. Love lme4 in R, but prefer to work in the scientific Python ecosystem? This package has got you covered!

pymer4 provides a clean interface that hides the back-and-forth code required when moving between R and Python. In other words, you can work completely in Python, never having to deal with R, but get (most) of lme4’s goodness. This is accomplished using rpy2 to interface between langauges.

Additionally pymer4 can fit various additional regression models with some bells, such as robust standard errors, and two-stage regression (summary statistics) models. See the features page for more information.

TL;DR this package is your new simple Pythonic drop-in replacement for lm() or glmer() in R.

For example:

# Assuming you have a pandas dataframe in tidy/long format
# with DV and IV columns for dependent/outcome vars and
# independent/predictor vars 

model = Lmer('DV ~ IV1 + IV2 + (IV+IV2|Group)', data=dataframe)

# Fit and print an R/statsmodels style summary 
# with t/z-tests, CIs, and p-values
model.fit()

# Access model attributes
model.BIC
model.residuals

# Get fitted parameters
model.coef # population parameters
model.fixef # group/cluster estimates (BLUPs)
model.ranef # group/cluster deviates

Check out the documentation site for detailed tutorial examples, API documentation, and installation instructions!

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