as_quantum

Convert spectral energy irradiance [W m-2 nm-1] into spectral photon
irradiance expressed as number of photons [s-1 m-2 nm-1]

Definitions of classes, methods, operators and functions for use
in photobiology and radiation meteorology and climatology. Calculation of
effective (weighted) and not-weighted irradiances/doses, fluence rates,
transmittance, reflectance, absorptance, absorbance and diverse ratios and
other derived quantities from spectral data. Local maxima and minima: peaks,
valleys and spikes. Conversion between energy-and photon-based units.
Wavelength interpolation. Astronomical calculations related solar angles and
day length. Colours and vision. This package is part of the 'r4photobiology'
suite, Aphalo, P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.

Pedro Aphalo

photobiology

Photobiological Calculations

Pedro J. Aphalo

Titta K. Kotilainen

Glenn Davis

Agnese Fazio

as_quantum function

<dl><dt>w.length</dt>
<dd>numeric vector of wavelengths (nm).</dd>
<dt>s.e.irrad</dt>
<dd>numeric vector of spectral (energy) irradiance values.</dd></dl>

Arguments

Convert spectral energy irradiance into spectral photon irradiance — as_quantum

<dl>

<dt>w.length</dt>
<dd>numeric vector of wavelengths (nm).</dd>


<dt>s.e.irrad</dt>
<dd>numeric vector of spectral (energy) irradiance values.</dd>

</dl>

as_quantum: Convert spectral energy irradiance into spectral photon irradiance

Description

Usage

Value

Arguments

See Also

Examples