fscale_spct

This function returns a spectral object of the same class as the one
supplied as argument but with the spectral data re-scaled.

internal

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

fscale_spct function

<dl><dt>spct</dt>
<dd>generic_spct The spectrum to be normalized</dd>
<dt>range</dt>
<dd>an R object on which range() returns a vector of length 2, with
min and max wavelengths (nm)</dd>
<dt>col.names</dt>
<dd>character The name of the variable to fscale</dd>
<dt>f</dt>
<dd>function A summary function to be applied to <code>spct</code> or the
name of such a function as a <code>character</code> string.</dd>
<dt>set.scaled</dt>
<dd>logical Flag indicating if the data is to be marked
as "scaled" or not.</dd>
<dt>na.rm</dt>
<dd>logical Indicating whether NA values should be stripped before
the computation proceeds</dd>
<dt>...</dt>
<dd>other arguments passed to f() by name.</dd></dl>

Arguments

fscale a spectrum — fscale_spct

<dl>

<dt>spct</dt>
<dd>generic_spct The spectrum to be normalized</dd>


<dt>range</dt>
<dd>an R object on which range() returns a vector of length 2, with
min and max wavelengths (nm)</dd>


<dt>col.names</dt>
<dd>character The name of the variable to fscale</dd>


<dt>f</dt>
<dd>function A summary function to be applied to <code>spct</code> or the
name of such a function as a <code>character</code> string.</dd>


<dt>set.scaled</dt>
<dd>logical Flag indicating if the data is to be marked
as "scaled" or not.</dd>


<dt>na.rm</dt>
<dd>logical Indicating whether NA values should be stripped before
the computation proceeds</dd>


<dt>...</dt>
<dd>other arguments passed to f() by name.</dd>

</dl>

fscale_spct: fscale a spectrum

Description

Usage

Value

Arguments