dot-save_faust_pop: Save FAUST subset as an FCS file
In MiguelRodo/faustutils: Additional functions to extract and plot FAUST output

Save FAUST subset as an FCS file

.save_faust_pop(
  project_path,
  fr_source,
  sample_name,
  sel_sample,
  pop,
  dir_save,
  trans_fn = NULL,
  trans_chnl = NULL
)

`project_path`	character. FAUST project directory.
`fr_source`	GatingSet or character vector. If a `GatingSet`, then the flowFrames within the GatingSet are used to create the output fcs files. If a character vector, then must specify a directory containing FCS files. These FCS files are used to create the output fcs files.
`sample_name`	`character vector`. Specifies names of samples in order in which they are found in `gs`.
`sel_sample`	`character vector`. Character vector specifying the names of the samples (as saved by FAUST as folder names in the analysis map and equivalent to `gs[[i]]@name` where i is an index in `gs`.) that are to have their FAUST pops saved.
`pop`	`list` or `named character vector`. If a `character vector`, then all cells matching the set of marker levels are returned. If a `list`, then each element must be a `character vector`, and then all cells matching either of these specified sets of marker levels are returned.
`dir_save`	`character`. Specifies directory in which files are saved.
`trans_fn`	function. If supplied, this function is applied to the expression data. Useful for back-transformation. If `NULL`, then no transformation is applied. Default is `NULL`.
`trans_chnl`	character vector. If specified, `trans_fn` is applied to only these channels. If `NULL` and if `trans_fn` is not `NULL`, then `trans_fn` is applied to entire expression matrix. Default is `NULL`.