photoperiod

photoperiod,numeric-method

photoperiod,Date-method

photoperiod,data.frame-method

photoperiod,SpatRaster-method

Compute photoperiod (daylength, sunshine duration) at a given latitude and day of the year.

A set of functions for weather and climate data manipulation, and other helper functions, to support dynamic ecological modeling, particularly crop and crop disease modeling.

Robert Hijmans

meteor

Meteorological Data Manipulation

Robert J. Hijmans

Gerald Nelson

Maarten Waterloo

photoperiod function

<dl> <dt>x</dt>
<dd>Date, integer (day of the year), or data.frame (with variables "date" and "latitude", or SpatRaster</dd> <dt>latitude</dt>
<dd>numeric. Latitude</dd> <dt>filename</dt>
<dd>character. Output filename</dd> <dt>overwrite</dt>
<dd>logical. If <code>TRUE</code>, <code>filename</code> is overwritten</dd>
 
 <dt>...</dt>
<dd>additional arguments for writing files as in <code><a href="/link/writeRaster?package=meteor&version=0.4-5" data-mini-rdoc="meteor::writeRaster">writeRaster</a></code></dd>
 
</dl>

Arguments

photoperiod — photoperiod

<dl>

 <dt>x</dt>
<dd>Date, integer (day of the year), or data.frame (with variables "date" and "latitude", or SpatRaster</dd>

 <dt>latitude</dt>
<dd>numeric. Latitude</dd>

 <dt>filename</dt>
<dd>character. Output filename</dd>

 <dt>overwrite</dt>
<dd>logical. If <code>TRUE</code>, <code>filename</code> is overwritten</dd>
 
 <dt>...</dt>
<dd>additional arguments for writing files as in <code><a href='https://rdrr.io/pkg/terra/man/writeRaster.html'>writeRaster</a></code></dd>
 
</dl>

photoperiod: photoperiod

Description

Usage

Value

Arguments

References

Examples