Fix behavior of hist function when passed empty dataset#2551

Merged

tacaswell merged 4 commits intomatplotlib:v1.3.xfrom

neggert:hist_emptydata

Jan 13, 2014

Commits on Jan 6, 2014

Allow empty datasets to be passed to hist, as long as at least one dataset has data
neggert
committed
Fixed another location where empty datasets in hist caused exceptions
neggert
committed
Add test for histogram with empty dataset
neggert
committed

Commits on Jan 10, 2014

Add cleanup to test
Nic Eggert
committed