photoperiod

computes sunrise &amp; sunset for day of year and location

Computes the Lomb-Scargle Periodogram and actogram for evenly or unevenly sampled time series. Includes a randomization procedure to obtain exact p-values. Partially based on C original by Press et al. (Numerical Recipes) and the Python module Astropy. For more information see Ruf, T. (1999). The Lomb-Scargle periodogram in biological rhythm research: analysis of incomplete and unequally spaced time-series. Biological Rhythm Research, 30(2), 178-201.

Thomas Ruf

lomb

Lomb-Scargle Periodogram

photoperiod function

<dl> <dt>dayofyear</dt>
<dd>day of ywar 1-366</dd> <dt>latitude</dt>
<dd>e.g. 42.00</dd> <dt>longitude</dt>
<dd>e.g. 9.00</dd> <dt>zone</dt>
<dd>time zone e.g 1 (Vienna)</dd> <dt>twilight</dt>
<dd>"rise/set", "civil" or "nautic"</dd></dl>

Arguments

Computes photoperiod — photoperiod

<dl>

 <dt>dayofyear</dt>
<dd>day of ywar 1-366</dd>

 <dt>latitude</dt>
<dd>e.g. 42.00</dd>

 <dt>longitude</dt>
<dd>e.g. 9.00</dd>

 <dt>zone</dt>
<dd>time zone e.g 1 (Vienna)</dd>

 <dt>twilight</dt>
<dd>"rise/set", "civil" or "nautic"</dd>

</dl>

photoperiod: Computes photoperiod

Description

Usage

Value

Arguments

References

Examples