spectra2CCT: Correlated Color Temperature (CCT) from spectra

Description Usage Arguments Value Author(s) Source References Examples

View source: R/colorscience.R

Description

spectra2CCT Correlated Color Temperature (CCT) from spectra.

Usage

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spectra2CCT(SPD=NA, isoTempLinesTable=NA,
CIETable = get("ciexyz31", envir = environment()), TCS = get("TCSdata", 
envir = environment())) 

Arguments

SPD

light source spd

isoTempLinesTable

Iso temperature lines table

CIETable

reference data values

TCS

spectral reflectance data of 14 color test samples for CRI

Value

Correlated Color Temperature (CCT)

Author(s)

Jose Gama

Source

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI http://www.lrc.rpi.edu/programs/nlpip/lightinganswers/lightsources/appendixb1.asp

References

Rensselaer Polytechnic Institute Light Sources and Color Q & A Appendix B: MATLAB script for calculating measures of light source color: CCT, CRI, GA, and FSI http://www.lrc.rpi.edu/programs/nlpip/lightinganswers/lightsources/appendixb1.asp

Examples

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# illuminant A
SPD = illuminants[1:51*2-1,c('wlnm','A')] # every 10 nm
CCT <- spectra2CCT(SPD)
CCT

Example output

Loading required package: Hmisc
Loading required package: lattice
Loading required package: survival
Loading required package: Formula
Loading required package: ggplot2

Attaching package: 'Hmisc'

The following objects are masked from 'package:base':

    format.pval, round.POSIXt, trunc.POSIXt, units

Loading required package: munsellinterpol
Loading required package: geometry
Loading required package: magic
Loading required package: abind
Loading required package: pracma

Attaching package: 'pracma'

The following object is masked from 'package:munsellinterpol':

    hypot

The following objects are masked from 'package:geometry':

    dot, polyarea

The following object is masked from 'package:magic':

    magic

The following object is masked from 'package:Hmisc':

    ceil

Loading required package: sp

Attaching package: 'colorscience'

The following objects are masked from 'package:munsellinterpol':

    XYZ2xyY, xyY2XYZ

x <-  0.4475996 	y <-  0.407533 
[1] 2855.84

colorscience documentation built on May 31, 2017, 2:30 a.m.