R/removeFreq.Spectra2D.R

In ChemoSpecUtils: Functions Supporting Packages ChemoSpec and ChemoSpec2D

#'
#' removeFreq.Spectra2D
#'
#' @author `r .writeDoc_Authors("BH")`
#' @noRd
#' @export
#'
removeFreq.Spectra2D <- function(spectra, rem.freq = NULL, remF2 = NULL, remF1 = NULL) {
  .chkArgs(mode = 21L)

  chkSpectra(spectra)

  # Subset data as requested

  if (!is.null(remF2)) { # F2 dimension: sorted F2 runs e.g. 0...10
    if (!inherits(remF2, "formula")) stop("remF2 must be a formula")
    limits <- .getLimits(spectra, "F2", remF2)
    toss <- !((spectra$F2 >= limits[1]) & (spectra$F2 <= limits[2]))
    for (i in 1:length(spectra$data)) spectra$data[[i]] <- spectra$data[[i]][, rev(toss), drop = FALSE]
    spectra$F2 <- spectra$F2[toss] # rev needed since 0 in lr corner
  }

  if (!is.null(remF1)) { # F1 dimension: sorted F1 runs e.g. 0...10 unsorted F1 runs e.g. 10...0
    if (!inherits(remF1, "formula")) stop("remF1 must be a formula")
    limits <- .getLimits(spectra, "F1", remF1)
    toss <- !((spectra$F1 >= limits[1]) & (spectra$F1 <= limits[2]))
    for (i in 1:length(spectra$data)) spectra$data[[i]] <- spectra$data[[i]][toss, , drop = FALSE]
    spectra$F1 <- spectra$F1[toss]
  }

  chkSpectra(spectra)
  return(spectra)
}