XploRe Help : createfdbasis

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library:	fda
See also:	data2fd getbasismatrix

Quantlet:		createfdbasis
Description:		creates a functional data basis in two steps: it recognizes the type of basis by use of several variant spelling and sets up the functional data basis depending on the type.

Usage:	`fdbasis=createfdbasis(type,rangeval,nbasis,params)`
Input:
	`type`	string, indicating the type of basis either "fourier", "bspline" or "poly"
	`range`	2 x 1 vector, contains the lower and upper boundaries for the range of argument values
	`nbasis`	scalar, number of basis functions
	`params`	either scalar, period (if the basis is "fourier") or constant shift parameter (if the basis is "poly") or n x 1 vctor, strictly nondecreasing sequence of knots (if the basis is "bspline")
	`fdbasis`	list, functional data basis object, composed of type, range, nbasis, params

Example:

library("fda") fdb = createfdbasis("bspline", #(0, 10), 13, 1 : 10) fdb

Result:

Contents of fdb.type

[1,] "bspline"

Contents of fdb.range

[1,]        0
[2,]       10

Contents of fdb.nbasis

[1,]       13

Contents of fdb.params

[ 1,]        1
[ 2,]        2
[ 3,]        3
[ 4,]        4
[ 5,]        5
[ 6,]        6
[ 7,]        7
[ 8,]        8
[ 9,]        9
[10,]       10

Author: J. Ulbricht 20040719 license MD*Tech