par2bsp {bspline} R Documentation

## Convert parameters to B-spline function

### Description

Convert parameters to B-spline function

### Usage

par2bsp(n, qw, xk, covqw = NULL, sdy = NULL, sdqw = NULL)


### Arguments

 n Integer scalar, polynomial order of B-splines qw Numeric vector or matrix, coefficients of B-splines, one set per column in case of matrix xk Numeric vector, knots covqw Numeric Matrix, covariance matrix of qw (can be estimated in smbsp). sdy Numeric vector, SD of each y column (can be estimated in smbsp). sdqw Numeric Matrix, SD of qw thus having the same dimension as qw (can be estimated in smbsp).

### Value

Function, calculating B-splines at arbitrary points and having interface f(x, select) where x is a vector of abscissa points. Parameter select is passed to qw[, select, drop=FALSE] and can be missing. This function will return a matrix of size length(x) x ncol(qw) if select is missing. Elsewhere, a number of column will depend on select parameter. Column names in the result matrix will be inherited from qw.

[Package bspline version 2.1 Index]