var.fd {fda}R Documentation

Variance and Covariance Surfaces for a Functional Data Object

Description

Compute the variance and covariance functions for functional data. These are two-argument functions, and therefore define a surface. If there is one functional data object supplied, its variance is computed. If there are two, the covariance between the two is computed. Both functional data objects must be univariate.

Usage

var.fd(fdx, fdy=fdx)

Arguments

fdx A univariate functional data object.
fdy A univariate functional data object.

Details

Value

A two-argument functional data object representing the variance surface for a single functional data object or the covariance between two functional data objects.

Note

Author(s)

References

See Also

meanFd, std.fd

Examples






[Package fda version 1.0 Index]