D2_spectrum: Calculate deuterium lamp output spectrum from fitted...

In photobiology: Photobiological Calculations

Calculate deuterium 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 calibration certificate).

Usage

D2_spectrum(w.length, k = photobiology::D2.UV653, fill = NA_real_)

Arguments

w.length	numeric vector of wavelengths (nm) for output
k	a polynom:polynomial object with n constants for the polynomial
fill	if NA, no extrapolation is done, and NA is returned for wavelengths outside the range 190 nm to 450 nm. If NULL then the tails are deleted. If 0 then the tails are set to zero, etc. NA 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).

Note

This is function is valid for wavelengths in the range 180 nm to 495 nm, for wavelengths outside this range NAs are returned.

Examples

D2_spectrum(200)
D2_spectrum(170:220)

photobiology documentation built on Oct. 21, 2023, 1:06 a.m.