zeligBuildSpline: Developer Utility Function for Adding Simple Cubic Splines to...
In IQSS/Zelig4: Everyone's Statistical Software

Description Usage Arguments Value Author(s) See Also

The zeligBuildSpline allows developers to include simple cubic smoothing splines of one dimension in models, by constructing k knot points equidistantly spaced across some variable, and adding those variables to the formula expression as a basis function for the spline.

1	zeligBuildSpline(formula, k, data)

`formula`	A string or formula object, with a variable to spline denoted as `s(.)`
`k`	A number of knot points to set equidistant across the range of the variable to spline.
`data`	A dataset

`formula`	A modified formula, including the names of all the basis generated basis function variables, and removing the `s(.)` notation.
`data`	A reconfigured dataset, if modified, with spline basis function variables added.

James Honaker jhonaker@iq.harvard.edu

The full Zelig developer manual may be accessed online at http://gking.harvard.edu/zelig

IQSS/Zelig4 documentation built on May 9, 2019, 9:13 a.m.