Autocorrelation plot
http://pandasplotting.blogspot.com/2012/06/autocorrelation-plot.html

Cool. Could you be a bit more careful about not merging upstream into your feature branches? Makes merging the branch back to master a lot harder for me
 Sure
 Sorry, ignore my comment on the other PR, I see the same thing happened here
 Not sure what happened, but it looks like this branch was not based off of pydata/master-- this resulted in very confused git (cherry-picking failed). I committed and pushed the changes by hand, but if it happens again I'll make you redo the PR / commits with a clean branch =)
 Yes, sorry about that. I am not quite sure what happened myself, I am still a bit clumsy with git. I am used to mercurial. You shouldn't feel bad forcing me to resubmit pull requests if needed.
