get_rect

get_polr

The <code>get_rect</code> and <code>get_polr</code> functions extract specific components from a
<code>fftab</code> object, representing the Fourier coefficients in either rectangular
or polar form.

The 'fftab' package stores Fourier coefficients in a tibble and
allows their manipulation in various ways. Functions are available for converting
between complex, rectangular ('re', 'im'), and polar ('mod', 'arg') representations,
as well as for extracting components as vectors or matrices. Inputs can include
vectors, time series, and arrays of arbitrary dimensions, which are restored
to their original form when inverting the transform. Since 'fftab' stores Fourier
frequencies as columns in the tibble, many standard operations on spectral data
can be easily performed using tidy packages like 'dplyr'.

Timothy H Keitt

fftab

Tidy Manipulation of Fourier Transformed Data

Timothy Keitt

get_rect function

<dl><dt>x</dt>
<dd>A matrix object containing FFT results.</dd></dl>

Arguments

Extract Rectangular or Polar Components — get_rect

<dl>

<dt>x</dt>
<dd>A matrix object containing FFT results.</dd>

</dl>

get_rect: Extract Rectangular or Polar Components

Description

Usage

Value

Arguments

See Also

Examples