log.generic_spct

log2.generic_spct

log10.generic_spct

exp.generic_spct

Logarithms and Exponentials for Spectra. The functions are applied to the
spectral data, not the wavelengths. The quantity in the spectrum to which the
function is applied depends on the class of <code>x</code> and the current value of
output options

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

log function

<dl><dt>x</dt>
<dd>an object of class "generic_spct"</dd>
<dt>base</dt>
<dd>a positive number: the base with respect to which logarithms are
computed. Defaults to e=exp(1).</dd></dl>

Arguments

Logarithms and Exponentials — log

<dl>

<dt>x</dt>
<dd>an object of class "generic_spct"</dd>


<dt>base</dt>
<dd>a positive number: the base with respect to which logarithms are
computed. Defaults to e=exp(1).</dd>

</dl>

log: Logarithms and Exponentials

Description

Usage

Value

Arguments

See Also