polySpline
Convert a Spline to Piecewise Polynomial Spline Representation

### Description

Converts a spline to its piecewise polynomial spline representation.

### Usage

    polySpline(object, ...)
    ## S3 method for class 'bSpline':
    polySpline(object, ...)
    ## S3 method for class 'nbSpline':
    polySpline(object, ...)
    ## S3 method for class 'pbSpline':
    polySpline(object, ...)
    ## S3 method for class 'polySpline':
    polySpline(object, ...)
    as.polySpline(object, ...)

### Arguments

object | an object that inherits from class spline. Typically this is an object that inherits from bSpline.
... | additional arguments to be passed to or from future functions.

Value
returns a piecewise-polynomial representation of the the input spline.

polySpline.bSpline | returns a list object of class c("polySpline", "spline"), that contains two components "knots" and "coefficients", with attribute "formula".
polySpline.nbSpline | returns object of class c("npolySpline", "polySpline", "spline").
polySpline.pbSpline | returns object of class c("ppolySpline", "polySpline", "spline") with component "period".
polySpline.polySpline | returns just the inputed object.

See Also
splineOrder, splineKnots, interpSpline, periodicSpline.
Examples

    x <- interpSpline(c(1,2,3,4),c(5,9,11,12), bSpline=FALSE)
    polySpline(x)

Package splines version 6.1.5-18
Package Index