- path
path to file(s), either a filename or a folder
- col
either "ex" or "em", what wavelengths are in the columns
- recursive
logical, whether directories are loaded recursively
- is_blank_corrected
logical, whether blank correction was done
- is_scatter_corrected
logical, wether scatters were corrected
- is_ife_corrected
logical, wether inner-filter effect correction was done
- is_raman_normalized
logical, wether raman normalisation applied
- manufacturer
string specifying manufacturer of instrument
- ...
parameters from other functions, currently not used