photobiology (version 0.9.9)

photons_energy_ratio: Photon:energy ratio

Description

This function gives the photons:energy ratio between for one given waveband of a radiation spectrum.

Usage

photons_energy_ratio(w.length, s.irrad, w.band = NULL, unit.in = "energy", check.spectrum = TRUE, use.cached.mult = FALSE, use.hinges = getOption("photobiology.use.hinges", default = NULL))

Arguments

w.length

numeric array of wavelength (nm)

s.irrad

numeric array of spectral (energy) irradiances (W m-2 nm-1)

w.band

waveband

unit.in

character Allowed values "energy", and "photon", or its alias "quantum"

check.spectrum

logical Flag telling whether to sanity check input data, default is TRUE

use.cached.mult

logical Flag telling whether multiplier values should be cached between calls

use.hinges

logical Flag telling whether to use hinges to reduce interpolation errors

Value

A single numeric value giving the ratio moles-photons per Joule.

See Also

Other photon and energy ratio functions: e_ratio, energy_ratio, eq_ratio, photon_ratio, q_ratio, qe_ratio

Examples

# photons:energy ratio
with(sun.data, photons_energy_ratio(w.length, s.e.irrad, new_waveband(400,500)))
# photons:energy ratio for whole spectrum
with(sun.data, photons_energy_ratio(w.length, s.e.irrad))