cmaurer/angularjs-nvd3-directives — pull request #138 by Spoke2k (2014-02-24 13:05:40+00:00)
Title: Added elementClick event to piechart.

I added the elementClick event to the piechart in my project, and it seems to work without problems.
I don't know if there are underlying reasons not to include this functionality.

If not I think it is a useful addition.