spct_CRI

Wrapper on function <code>computeCRI</code> from package
'colorSpec' that accepts <code>source_spct</code> objects.

Functions for reading, and in some cases writing, foreign files
containing spectral data from spectrometers and their associated software,
output from daylight simulation models in common use, and some spectral
data repositories. As well as functions for exchange of spectral data with
other R packages. Part of the 'r4photobiology' suite,
Aphalo P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.

Pedro Aphalo

photobiologyInOut

Read Spectral and Logged Data from Foreign Files

Pedro J. Aphalo

Titta K. Kotilainen

Glenn Davis

spct_CRI function

<dl><dt>spct</dt>
<dd>source_spct A single light source spectrum.</dd>
<dt>adapt</dt>
<dd>logical If TRUE, then a special chromatic adaption is performed,
see Details in <code>computeCRI</code>.</dd>
<dt>attach</dt>
<dd>logical If TRUE, then a large list of intermediate calculations
is attached to the returned number, as attribute data. This attached list
includes data for all special 14 color samples, although the last 6 do not
affect the returned CRI</dd>
<dt>tol</dt>
<dd>numeric For the CRI to be meaningful the chromaticities of the
test and reference illuminants must be sufficiently close in the CIE 1960
uniform chromaticity space. If the tolerance is exceeded, the function
returns NA. The default tol=5.4e-3 is the one recommended by the CIE, but
the argument allows the user to override it.</dd>
<dt>named</dt>
<dd>logical Whether to set the name attribute of the returned
value to the name of the spectrum passed as argument if possible.</dd></dl>

Arguments

Color reproduction index — spct_CRI

<dl>

<dt>spct</dt>
<dd>source_spct A single light source spectrum.</dd>


<dt>adapt</dt>
<dd>logical If TRUE, then a special chromatic adaption is performed,
see Details in <code>computeCRI</code>.</dd>


<dt>attach</dt>
<dd>logical If TRUE, then a large list of intermediate calculations
is attached to the returned number, as attribute data. This attached list
includes data for all special 14 color samples, although the last 6 do not
affect the returned CRI</dd>


<dt>tol</dt>
<dd>numeric For the CRI to be meaningful the chromaticities of the
test and reference illuminants must be sufficiently close in the CIE 1960
uniform chromaticity space. If the tolerance is exceeded, the function
returns NA. The default tol=5.4e-3 is the one recommended by the CIE, but
the argument allows the user to override it.</dd>


<dt>named</dt>
<dd>logical Whether to set the name attribute of the returned
value to the name of the spectrum passed as argument if possible.</dd>

</dl>

spct_CRI: Color reproduction index

Description

Usage

Value

Arguments

Details

Examples