5.4. statsmodels.sandbox.formula

Provides the basic classes needed to specify statistical models.

namespace

: dictionary

mapping from names to data, used to associate data to a formula or term

5.4.1. Functions

interactions(terms[, order])	Output all pairwise interactions of given order of a sequence of terms.
isnested(A, B[, namespace])	Is factor B nested within factor A or vice versa: a very crude test which depends on the namespace.
iterkeys(obj, **kwargs)
itervalues(obj, **kwargs)

5.4.2. Classes

Factor(termname, keys[, ordinal])	A categorical factor.
Formula(termlist[, namespace])	A formula object for manipulating design matrices in regression models, essentially consisting of a list of term instances.
Quantitative(name[, func, termname, transform])	A subclass of term that can be used to apply point transformations of another term, i.e.
Term(name[, func, termname])	This class is very simple: it is just a named term in a model formula.