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Calculate values by means of a nth degree polynomial from user-supplied constants (for example from a lamp calibration certificate).
FEL_spectrum(w.length, k = photobiology::FEL.BN.9101.165, fill = NA_real_)
a dataframe with four numeric vectors with wavelength values (w.length), energy and photon irradiance (s.e.irrad, s.q.irrad) depending on the argument passed to unit.out (s.irrad).
numeric vector of wavelengths (nm) for output
a numeric vector with n constants for the function
if NA, no extrapolation is done, and NA is returned for wavelengths outside the range 250 nm to 900 nm. If NULL then the tails are deleted. If 0 then the tails are set to zero, etc. NA is default.
FEL_spectrum(400)
FEL_spectrum(250:900)
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