fourier {fda}R Documentation

Fourier Basis Function Values

Description

Evaluates a set of Fourier basis functions, or a derivative of these functions, at a set of arguments.

Usage

fourier(x, nbasis=n, period=span, nderiv=0)

Arguments

x A vector of argument values at which the Fourier basis functions are to evaluated.
nbasis The number of basis functions in the Fourier basis. The first basis function is the constant function, followed by sets of sine/cosine pairs. Normally the number of basis functions will be an odd. The default number is the number of argument values.
period The width of an interval over which all sine/cosine basis functions repeat themselves. The default is the difference between the largest and smallest argument values.
nderiv The derivative to be evaluated. The derivative must not exceed the order. The default derivative is 0, meaning that the basis functions themselves are evaluated.

Details

Value

A matrix of function values. The number of rows equals the number of arguments, and the number of columns equals the number of basis

Note

Author(s)

References

See Also

Examples






[Package fda version 1.0 Index]