photobiology (version 0.9.6)

energy_ratio: Energy:energy ratio

Description

This function gives the energy ratio between two given wavebands of a radiation spectrum.

Usage

energy_ratio(w.length, s.irrad, w.band.num = NULL, w.band.denom = NULL,
  unit.in = "energy", check.spectrum = TRUE, use.cached.mult = FALSE,
  use.hinges = NULL)

Arguments

w.length

numeric Vector of wavelengths (nm)

s.irrad

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

w.band.num

waveband

w.band.denom

waveband

unit.in

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

check.spectrum

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

use.cached.mult

logical Flag indicating whether multiplier values should be cached between calls

use.hinges

logical Flag indicating whether to use hinges to reduce interpolation errors

Value

• a single numeric value giving the unitless ratio

See Also

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

Examples

# energy:energy ratio
with(sun.data,
     energy_ratio(w.length, s.e.irrad, new_waveband(400,500), new_waveband(400,700)))
# energy:energy ratio waveband : whole spectrum
with(sun.data, energy_ratio(w.length, s.e.irrad, new_waveband(400,500)))
# energy:energy ratio of whole spectrum should be equal to 1.0
with(sun.data, energy_ratio(w.length, s.e.irrad))