photobiology: Photobiological Calculations

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. Conversion between energy- and photon-based units. Wavelength interpolation. Astronomical calculations related solar angles and day length. Colours and vision.

Version: 0.9.16
Depends: R (≥ 3.3.0)
Imports: stats, polynom (≥ 1.3-9), tibble (≥ 1.3.3), lubridate (≥ 1.6.0), plyr (≥ 1.8.4), dplyr (≥ 0.7.1), splus2R (≥ 1.2-2), caTools (≥ 1.17.1)
Suggests: knitr (≥ 1.16), rmarkdown (≥ 1.6), testthat (≥ 1.0.2), roxygen2 (≥ 6.0.1), ggmap (≥ 2.6.1)
Published: 2017-06-25
Author: Pedro J. Aphalo [aut, cre], Titta K. Kotilainen [ctb]
Maintainer: Pedro J. Aphalo <pedro.aphalo at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Citation: photobiology citation info
Materials: README NEWS
CRAN checks: photobiology results


Reference manual: photobiology.pdf
Vignettes: User Guide 1: Introduction
User Guide: 2 radiation
User Guide 3: astronomy
Package source: photobiology_0.9.16.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X El Capitan binaries: r-release: photobiology_0.9.16.tgz
OS X Mavericks binaries: r-oldrel: photobiology_0.9.16.tgz
Old sources: photobiology archive

Reverse dependencies:

Reverse depends: photobiologyLamps, photobiologyLEDs, photobiologyPlants, photobiologyWavebands
Reverse imports: ggspectra, photobiologyInOut


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