grp2idx: distinguish empty vs all-undefined categorical inputs#353
Open
beingamanforever wants to merge 1 commit intognu-octave:mainfrom
Open
grp2idx: distinguish empty vs all-undefined categorical inputs#353beingamanforever wants to merge 1 commit intognu-octave:mainfrom
beingamanforever wants to merge 1 commit intognu-octave:mainfrom
