This function gives the photon ratio between two given wavebands of a radiation spectrum.
photon_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 = getOption("photobiology.use.hinges", default = NULL)
)
a single numeric value giving the unitless ratio.
numeric vector of wavelength (nm).
numeric vector of spectral irradiances in
[\(W\,m^{-2}\,nm^{-1}\)] or
[\(mol\,s^{-1}\,sm^{-2}\,nm^{-1}\)] as indicated by the
argument pased to unit.in
.
waveband object used to compute the numerator of the ratio.
waveband object used to compute the denominator of the ratio.
character Allowed values "energy"
, and "photon"
,
or its alias "quantum"
.
logical Flag telling whether to sanity check input data, default is TRUE.
logical Flag telling whether multiplier values should be cached between calls.
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()
,
photons_energy_ratio()
,
prod_spectra()
,
s_e_irrad2rgb()
,
split_energy_irradiance()
,
split_photon_irradiance()
,
subt_spectra()
,
sum_spectra()
,
trim_tails()
,
v_insert_hinges()
,
v_replace_hinges()
with(sun.data,
photon_ratio(w.length, s.e.irrad, new_waveband(400,500), new_waveband(400,700)))
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