knitr, rmarkdown, fansi, htmltools, tidyverse, data.table,
testthat (>= 2.1.0)

knitr, rmarkdown, fansi, htmltools, data.table, testthat (>=
2.1.0), tibble, dplyr, tidyr

Builds single and double gradient color maps

Color Calculations with Emphasis on Spectral Data
Calculate with spectral properties of light sources, materials, cameras, eyes, and scanners.
Build complex systems from simpler parts using a spectral product algebra. For light sources,
compute CCT and CRI.  For object colors, compute optimal colors and Logvinenko coordinates.
Work with the standard CIE illuminants and color matching functions, and read spectra from
text files, including CGATS files.  Sample text files, and 4 vignettes are included.

Calculate with spectral properties of light sources, materials, cameras, eyes, and scanners.
Build complex systems from simpler parts using a spectral product algebra. For light sources,
compute CCT and CRI.  For object colors, compute optimal colors and Logvinenko coordinates.
Work with the standard CIE illuminants and color matching functions, and read spectra from
text files, including CGATS files.  A user guide and 5 vignettes are included.

Calculate with spectral properties of light sources, materials, cameras, eyes, and scanners.
Build complex systems from simpler parts using a spectral product algebra. For light sources,
compute CCT and CRI.  For object colors, compute optimal colors and Logvinenko coordinates.
Work with the standard CIE illuminants and color matching functions, and read spectra from
text files, including CGATS files.  A user guide and 7 vignettes are included.

Calculate with spectral properties of light sources, materials, cameras, eyes, and scanners.
Build complex systems from simpler parts using a spectral product algebra. For light sources,
compute CCT and CRI.  For object colors, compute optimal colors and Logvinenko coordinates.
Work with the standard CIE illuminants and color matching functions, and read spectra from
text files, including CGATS files.  Estimate a spectrum from its response. A user guide and 8 vignettes are included.