# empichar

The goal of empichar is to evaluate the empirical characteristic
function meeting the following criteria:

- Allow the
`C++`

functions to be imported in other
`R`

packages.
- Make a fast evaluation (using
`RcppArmadillo`

).
- Check the dimensions of the input arguments.
- If desired, compute only the real part, imaginary part or modulus of
the empirical characteristic function (faster than taking the real part
of the empirical characteristic function).

## Installation

You can install the released version of empichar from CRAN with:

`install.packages("empichar")`

## Available functions

`ecf` |
Empirical characteristic function of a
given sample |

`ecf_real` |
Real part of the empirical characteristic
function |

`ecf_imag` |
Imaginary part of the empirical
characteristic function |

`ecf_mod` |
Modulus of the empirical characteristic
function |

## Documentation

I will add a vignette later on. Meanwhile, consult the documentation
with `help("ecf", "empichar")`

,
`help("ecf_real", "empichar")`

,
`help("ecf_imag", "empichar")`

,
`help("ecf_mod", "empichar")`

.