2-dimentional Radial Spline

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Description

2-dimentional radial spline generator used in cpglmm

Usage

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sp2d(x1, x2, k = max(20, min(length(x1)/4, 150)), by = NULL, 
allPen = FALSE, varying = NULL, diag = FALSE, 
knots1 = quantile(x1, probs = 1:k/(k + 1)), 
knots2 = quantile(x1, probs = 1:k/(k + 1)))

Arguments

x1

the first covariate in the coordinate

x2

the second covariate in the coordinate

k

number of knots

by

not used. This is just for compatibility with amer.

allPen

not used. This is just for compatibility with amer.

varying

not used. This is just for compatibility with amer.

diag

not used. This is just for compatibility with amer.

knots1

vector of knot locations for the first covariate in the coordinate

knots2

vector of knot locations for the second covariate in the coordinate

Author(s)

Fabian Scheipl fabian.scheipl@googlemail.com