D2_spectrum: Calculate deuterim lamp output spectrum from fitted constants
Description
Calculate values by means of a nth degree polynomial from
user-supplied constants (for example from a lamp calibartion certificate).
Usage
D2_spectrum(w.length, k = D2.UV653, fill = NULL)
Arguments
w.length
numeric vector of wavelengths (nm) for output
k
a numeric vector with n constants for the polynomial
fill
if NA, no extrapolation is done, and NA is returned for
wavelengths outside the range of the input. If NULL then the tails are
deleted. If 0 then the tails are set to zero, etc. NULL is default.
Value
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).