getBasisMat: Get the basis matrix to be used for this spline tree

In splinetree: Longitudinal Regression Trees and Forests

Description

Using the user-specified parameters or the default parameters, computes the basis matrix that will be used for building the tree.

Usage

getBasisMat(yvar, tvar, idvar, data, knots = NULL, df, degree, intercept,
  gridPoints, nGrid = 7)

Arguments

yvar	Name of response variable (string)
tvar	Name of time variable (string)
idvar	Name of ID variable (string)
data	Full dataset
knots	Knots argument specified by user. Specifies location of INTERNAL knots.
df	Degrees of freedom argument specified by user
degree	The degree of the spline polynomial
intercept	Whether or not to use an intercept
gridPoints	Optional. A vector of numbers that will be used as the grid on which to evaluate the projection sum of squares. Should fall roughly within the range of the time variable.
nGrid	Number of grid points to evaluate split function at.

Value

The basis matrix to be used for the tree building process

splinetree documentation built on July 18, 2019, 9:08 a.m.