polaram.as.spectrum: Compute A Raman Spectrum From PolaRam Output This function...
In AlreadyTakenJonas/RHotStuff: Collection of frequently used functions

polaram.as.spectrum

R Documentation

Compute A Raman Spectrum From PolaRam Output This function takes the output of the polaram simulate program and computes one possible raman spectrum. PolaRam is a program that simulates the raman scattering process with respect to the polarisation of the light. For details see the GitHub-Repository. The spectrum will be computed as sum of loretz curves. Every peak of the spectrum will be modeled by a lorentz curve. This function makes the assuption, that the spectrum was created with a hypothetical photo detector, that responds differently to light polarised along the x-axis and y-axis. The two scalars scaleX and scaleY allow to influence the height of the signal, depending of the polarisation of the hypothetically detectable light. If both values are one, the light will be not distinguished by its polarisation.

Description

Compute A Raman Spectrum From PolaRam Output

This function takes the output of the polaram simulate program and computes one possible raman spectrum. PolaRam is a program that simulates the raman scattering process with respect to the polarisation of the light. For details see the GitHub-Repository. The spectrum will be computed as sum of loretz curves. Every peak of the spectrum will be modeled by a lorentz curve. This function makes the assuption, that the spectrum was created with a hypothetical photo detector, that responds differently to light polarised along the x-axis and y-axis. The two scalars scaleX and scaleY allow to influence the height of the signal, depending of the polarisation of the hypothetically detectable light. If both values are one, the light will be not distinguished by its polarisation.

Usage

polaram.as.spectrum(
  x,
  stokes.S0,
  stokes.S1,
  peaks.wavenumber,
  gamma = 25,
  normalise = FALSE,
  scaleX = 2,
  scaleY = 1
)

Arguments

`x`	A vector of wavnumbers. The function computes for every wavenumber one point of the spectrum.
`stokes.S0`	The first stokes parameter of the scattered light. It may be a vector with one element for each peak.
`stokes.S1`	The second stokes parameter of the scattered light. It may be a vector with one element for each peak.
`peaks.wavenumber`	The wavenumber of the raman peak. It may be a vector with one element for each peak.
`gamma`	A scalar describing the width of the peaks. It may be a vector with one element for each peak. If the vector gamma is shorter than the peaks.wavenumber vector, gamma will be reapeated until the length of both vectors match. The FWHM is in terms of the peaks width gamma (g) and the peaks wavenumber (v): FWHM = sqrt(v^2 + vg) - sqrt(v^2 - vg) .
`normalise`	Boolean value. If true the spectrum will be divided by its maximum.
`scaleX`	Multiplicator, which describes how sensitive the photo detector is along the x-axis.
`scaleY`	Multiplicator, which describes how sensitive the photo detector is along the y-axis.