Pfr_P_ratio {photobiologyPlants} | R Documentation |
Ratio between Pr and Ptot (photoequilibrium) for Type I Phytochrome.
Pfr_P_ratio(
w.length,
s.irrad = rep(1, length(w.length)),
unit.in = "energy",
check.spectrum = TRUE,
use.cached.mult = FALSE
)
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 |
a single numeric value giving the unitless photon ratio
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). doi:10.1007/978-94-011-1884-2_10