statsmodels.gam.smooth_basis.CyclicCubicSplines¶

class statsmodels.gam.smooth_basis.CyclicCubicSplines(x, df, constraints=None, variable_names=None)[source]¶

additive smooth components using cyclic cubic regression splines

This spline basis is the same as in patsy.

Parameters:¶

x : array_like, 1-D or 2-D¶

underlying explanatory variable for smooth terms. If 2-dimensional, then observations should be in rows and explanatory variables in columns.

df : int¶

numer of basis functions or degrees of freedom

constraints : {None, str, array}¶

Constraints are used to transform the basis functions to satisfy those constraints.

variable_names : {list[str], None}¶

The names for the underlying explanatory variables, x used in for creating the column and parameter names for the basis functions. If x is a pandas object, then the names will be taken from it.

Methods

transform(x_new)

create the spline basis for new observations