formula reference

Release:0.1.0.dev Date:July 30, 2011

This reference manual details functions, modules, and objects included in formula.

This package contains an implementation of symbolic statistical models in Python.

The implementation is of a full algebra of factors and numerical variables in statistical models.

It has some similarities to model formulae in R, but differs in that the rules for the creation of design matrices are more completely defined by the model algebra.

An earlier version of this package is in nipy_.

Mailing Lists

Please see the developer’s list here:

http://mail.scipy.org/mailman/listinfo/nipy-devel

Code

You can find our sources and single-click downloads:

• Main repository on Github.
• Documentation for all releases and current development tree.
• Download as a tar/zip file the current trunk.
• Downloads of all available releases.

License

formula is licensed under the terms of the BSD license. Please the COPYING file in the formula distribution.

formulae	Formula objects
parts	Parts of formulae: Terms, Factors, etc
ancova	Implementation of R’s rules for design matrix creation
convenience	Convenience functions for working with formulae / terms
utils	Utility routines
rutils	Utilities for working with R
random_effects	Formulae for random effects models