R/tauScale.R

In increasechief/chromastar: Pedagogical Stellar Atmposhere and Spectrum Modelling of Stars

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## Copyright (c) 2018 Oliver Dechant
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#Creates standard optical depth scale sampling of the model vertically -
#interpretated as the Rossland optical depth scale uniformly spaced in log(tau)

tauScale <- function(numDeps, log10MinDepth, log10MaxDepth) {

  #log_10 Rossland optical depth scale
  tauRos <- matrix(numDeps, 2)

  #Construct the log Rossland optical depth scale, try equal spacing in log depth
  ln10 <- log(10)

  logMinDepth <- log10MinDepth*ln10
  logMaxDepth <- log10MaxDepth*ln10

  deltaLogTau <- (logMaxDepth-logMinDepth)/(numDeps-1)

  tauRos[,1] <- logMinDepth+(numDeps*deltaLogTau)
  tauRos[,2] <- exp(tauRos[,1])

  tauRos
}