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)
)

Value

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

Arguments

w.length: numeric vector of wavelength (nm).
s.irrad: numeric vector of spectral irradiances in [ $W m^{- 2} n m^{- 1}$ ] or [ $m o l s^{- 1} s m^{- 2} n m^{- 1}$ ] as indicated by the argument pased to unit.in.
w.band: waveband object.
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 indicating whether to insert "hinges" into the spectral data before integration so as to reduce interpolation errors at the boundaries of the wavebands.

Other low-level functions operating on numeric vectors.: as_energy(), as_quantum_mol(), calc_multipliers(), div_spectra(), energy_irradiance(), energy_ratio(), insert_hinges(), integrate_xy(), interpolate_spectrum(), irradiance(), l_insert_hinges(), oper_spectra(), photon_irradiance(), photon_ratio(), prod_spectra(), s_e_irrad2rgb(), split_energy_irradiance(), split_photon_irradiance(), subt_spectra(), sum_spectra(), trim_tails(), v_insert_hinges(), v_replace_hinges()

Examples

Run this code

# 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))

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