Create a Polygonal Basis

Create a Polygonal Basis

DESCRIPTION:

A basis is set up for constructing polygonal lines, consisting of straight line segments that join together.

USAGE:

create.polygonal.basis(argvals=NULL)

REQUIRED ARGUMENTS:

None

OPTIONAL ARGUMENTS:

argvals
A strictly increasing vector of argument values at which line segments join to form a polygonal line.

VALUE:

A basis object with the type "polyg".

DETAILS:

The actual basis functions consist of triangles, each with its apex over an argument value. Note that in effect the polygonal basis is identical to a B-spline basis of order 2 and a knot or break value at each argument value. The range of the polygonal basis is set to the interval defined by the smallest and largest argument values.

SEE ALSO:

basis.fd. create.basis, create.bspline.basis

EXAMPLES:

basis <- create.polygonal.basis(seq(0,1,0.1))