sign

sign.generic_spct

<code>sign</code> returns a vector with the signs of the corresponding elements of
x (the sign of a real number is 1, 0, or -1 if the number is positive, zero,
or negative, respectively).

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

sign function

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

Arguments

Sign — sign

<dl>

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

</dl>

sign: Sign

Description

Usage

Arguments

See Also