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unwrap

Unwrap phase angles

Description

Unwrap radian phases by adding or subtracting multiples of 2 * pi.

Usage

unwrap(x, tol = pi)

Arguments

x

Input array, specified as a vector or a matrix. If x is a matrix, unwrapping along the columns of x is applied.
tol

Jump threshold to apply phase shift, specified as a scalar. A jump threshold less than pi has the same effect as the threshold pi. Default:

pi

.

Value

Unwrapped phase angle, returned as a vector, matrix, or multidimensional array.

Author(s)

Bill Lash.
Conversion to R by Geert van Boxtel, gjmvanboxtel@gmail.com

Examples

## Define spiral shape.
t <- seq(0, 6 * pi, length.out = 201)
x <- t / pi * cos(t)
y <- t / pi * sin(t)
plot(x, y, type = "l")
## find phase angle
p = atan2(y, x)
plot(t, p, type="l")
## unwrap it
q = unwrap(p)
plot(t, q, type ="l")
gsignal

Signal Processing

v0.3-1
GPL-3
Authors
Geert van Boxtel [aut, cre] (Maintainer), Tom Short [aut] (Author of 'signal' package), Paul Kienzle [aut] (Majority of the original sources), Ben Abbott [ctb], Juan Aguado [ctb], Muthiah Annamalai [ctb], Leonardo Araujo [ctb], William Asquith [ctb], David Bateman [ctb], David Billinghurst [ctb], Juan Pablo Carbajal [ctb], André Carezia [ctb], Vincent Cautaerts [ctb], Eric Chassande-Mottin [ctb], Luca Citi [ctb], Dave Cogdell [ctb], Carlo de Falco [ctb], Carne Draug [ctb], Pascal Dupuis [ctb], John W. Eaton [ctb], R.G.H Eschauzier [ctb], Andrew Fitting [ctb], Alan J. Greenberger [ctb], Mike Gross [ctb], Daniel Gunyan [ctb], Kai Habel [ctb], Kurt Hornik [ctb], Jake Janovetz [ctb], Alexander Klein [ctb], Peter V. Lanspeary [ctb], Bill Lash [ctb], Friedrich Leissh [ctb], Laurent S. Mazet [ctb], Mike Miller [ctb], Petr Mikulik [ctb], Paolo Neis [ctb], Georgios Ouzounis [ctb], Sylvain Pelissier [ctb], Francesco Potortì [ctb], Charles Praplan [ctb], Lukas F. Reichlin [ctb], Tony Richardson [ctb], Asbjorn Sabo [ctb], Thomas Sailer [ctb], Rolf Schirmacher [ctb], Rolf Schirmacher [ctb], Ivan Selesnick [ctb], Julius O. Smith III [ctb], Peter L. Soendergaard [ctb], Quentin Spencer [ctb], Doug Stewart [ctb], P. Sudeepam [ctb], Stefan van der Walt [ctb], Andreas Weber [ctb], P. Sudeepam [ctb], Andreas Weingessel [ctb]
Initial release
2021-05-02

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