R/getSelectedTracesMax.R

In TIMP: Fitting Separable Nonlinear Models in Spectroscopy and Microscopy

"getSelectedTracesMax" <- function(multimodel, t, plotoptions) {
  sp <- getSpecList(multimodel, t)[[1]]
  ## this assumes the spectra are same for all datasets

  sorted <- apply(sp, 2, sort, index.return = TRUE, decreasing = TRUE)
  ## now each element of sorted is a sorted component

  cnt <- plotoptions@nummaxtraces
  cc <- ncol(sp)

  ll <- 0
  selectedtraces <- vector()
  while (length(selectedtraces) < cnt && ll < nrow(sp)) {
    for (i in 1:cc) {
      ss <- sorted[[i]]$ix
      if (ll == 0) {
        selectedtraces <- ss[1]
      } else {
        addto <- which(!ss %in% selectedtraces)
        if (length(addto) > 0) {
          selectedtraces <- append(selectedtraces, ss[addto[1]])
        }
      }

      ll <- ll + 1
    }
  }
  cat("The following traces will be plotted:\n", toString(selectedtraces), "\n")
  selectedtraces
}