BUG: transform and filter misbehave when grouping on categorical data#9994

Merged

jreback merged 1 commit intopandas-dev:masterfrom

evanpw:issue_9921

Apr 29, 2015

Commits on Apr 28, 2015

BUG: transform and filter misbehave when grouping on categorical data (GH 9921)
evanpw
committed