January 2010
Beginner
634 pages
19h 50m
English
Content preview from R in a Nutshell
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splines
This package provides functions for working with
regression splines using the B-spline basis, bs, and the natural cubic spline basis,
ns.
Functions
| Function | Description |
|---|---|
| as.polySpline | Creates the piecewise polynomial representation of a spline object. |
| asVector | This is a generic function. Methods for this function coerce objects of given classes to vectors. |
| backSpline | Creates a monotone inverse of a monotone natural spline. |
| bs | Generates the B-spline basis matrix for a polynomial spline. |
| interpSpline | Creates an interpolation spline, either from x and y vectors or from a
formula/data.frame combination. |
| ns | Generates the B-spline basis matrix for a natural cubic spline. |
| periodicSpline | Creates a periodic interpolation spline, either from
x and y vectors or from a
formula/data.frame combination. |
| polySpline | Creates the piecewise polynomial representation of a spline object. |
| spline.des | Evaluates the design matrix for the B-splines defined
by knots at the values in
x. |
| splineDesign | Evaluates the design matrix for the B-splines defined
by knots at the values in
x. |
| splineKnots | Returns the knot vector corresponding to a spline object. |
| splineOrder | Returns the order of a spline object. |
| xyVector | Creates an object to represent a set of x-y pairs. |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.