(numeric) expansion factor for labels: 1st value for main groups (grp, eg genotypes), 2nd for detailed text (grp2, eg animal IDs) (see also par)
sepLines
(logical) optional drawing of horizontal lines aiming to separate groups (in analogy to support vectors)
silent
(logical) suppress messages
callFrom
(character) allow easier tracking of message(s) produced
Value
list with $annot, $abund for initial/raw abundance values and $quant with final normalized quantitations, or returns data.frame with annot and quant if separateAnnot=FALSE