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

D2_spectrum {photobiology} | R Documentation

## 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)

[Package photobiology version 0.9.21 Index]