Pfr_P_ratio: Calculation of Pfr:Ptot ratio from spectral irradiance

In photobiologyPlants: Plant Photobiology Related Functions and Data

Calculation of Pfr:Ptot ratio from spectral irradiance

Description

Ratio between Pr and Ptot (photoequilibrium) for Type I Phytochrome.

Usage

Pfr_P_ratio(
  w.length,
  s.irrad = rep(1, length(w.length)),
  unit.in = "energy",
  check.spectrum = TRUE,
  use.cached.mult = FALSE
)

Arguments

w.length	numeric array of wavelength (nm)
s.irrad	numeric array of spectral (energy) irradiances (W m-2 nm-1) or (mol s-1 m-2)
unit.in	character string with allowed values "energy", and "photon", or its alias "quantum"
check.spectrum	logical indicating whether to sanity check input data, default is TRUE
use.cached.mult	logical indicating whether multiplier values should be cached between calls

Value

a single numeric value giving the unitless photon ratio

References

Mancinelli, A.L. (1994) The physiology of phytochrome action. In Photomorphogenesis in plants, 2nd edition. R.E. Kendrick and G.H.M. Kronenberg, eds. Kluwer Academic Publishers, Dordrecht, pp. 211-269. ISBN 978-0-7923-2551-2 (print), 978-94-011-1884-2 (on-line). \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1007/978-94-011-1884-2_10")}

photobiologyPlants documentation built on May 29, 2024, 10:29 a.m.