Spectral (color) similarity index — spct

Wrapper on function computeSSI from package 'colorSpec' that accepts source_spct objects.

Usage

spct_SSI(
  spct,
  reference.spct = NULL,
  digits = 0,
  isotherms = "mccamy",
  locus = "robertson",
  named = FALSE
)

spct, reference.spct: source_spct Single light source spectra.
digits: integer The number of digits after the decimal point in the returned vector. According to Holm the output should be rounded to the nearest integer, which corresponds to digits = 0. To return full precision, set digits = Inf.
isotherms: character This is only used when reference=NULL. It is passed to computeCCT in order to compute the CCT of each test spectrum.
locus: character This is only used when reference=NULL. It is passed to computeCCT in order to compute the CCT of each test spectrum.
named: logical Whether to set the name attribute of the returned value to the name of the spectrum passed as argument if possible.

A numeric value between zero and 100.

Please see computeSSI for the details of the computations and references.


spct_SSI(white_led.source_spct, sun.spct)
#> [1] 37