Description Usage Arguments Value Warning See Also

View source: R/univariateExpansions.R

Given scores (coefficients), these functions calculate a linear
combination of two- or three-dimensional cosine tensor basis functions
on two- or three-dimensional domains using the C-library `fftw3`

(see http://www.fftw.org/).

1 2 3 | ```
dctFunction2D(scores, argvals, parallel = FALSE)
dctFunction3D(scores, argvals, parallel = FALSE)
``` |

`scores` |
A sparse matrix of dimension |

`argvals` |
A list containing two or three numeric vectors, corresponding to the domain grid (x and y values for two-dimensional domains; x,y and z values fro three-dimensional domains.) |

`parallel` |
Logical. If |

An object of class `funData`

with `N`

observations on
the two- or threedimensional domain specified by `argvals`

,
corresponding to the linear combination of orthonormal cosine basis
functions.

If the C-library `fftw3`

is not available when
the package `MFPCA`

is installed, the functions are disabled an
will throw an error. For full functionality install the C-library
`fftw3`

from http://www.fftw.org/ and reinstall
`MFPCA`

. This function has not been tested with
ATLAS/MKL/OpenBLAS.

`univExpansion`

, `idct2D`

,
`idct3D`

, `dctBasis2D`

,
`dctBasis3D`

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