columbia-applied-data-science/rosetta — pull request #17 by mdeland (2014-02-19 05:20:14+00:00)
Title: implement to_scipysparse

As referenced here:
https://github.com/columbia-applied-data-science/rosetta/issues/11

Currently returns a scipy sparse object.
There doesn't seem to be a great way to write a matrix to stdout that scipy can read in a simple fashion, so it seemed just as useful to return the sparse matrix.