William Mayner

Thanks—I reproduced this on both macOS and Debian, and I found that it depends on having two zeros in the second histogram; the value of the 2.0 doesn't matter; and...

The problem is that NumPy needs to be [imported during the setup process](https://github.com/wmayner/pyemd/blob/develop/setup.py#L77) so that its C headers can be included, and for some reason it cannot be imported. You...

I will have some time to look into the various installation issues in a few weeks. In the meantime I'm happy to review PRs.

@philippjfr Is it possible to use your workaround to show just a tooltip for the nearest point? (Relevant when zooming in to a datashaded plot).

I'm getting a different error when I try to pickle a fitted UMAP object, even when I use `protocol=-1`: ``` TypeError: can't pickle _nrt_python._MemInfo objects ``` I also tried using...

It seems that the `_nrt_python._MemInfo` error is caused by the attempt to serialize `pynndescent._rp_trees.FlatTree` objects.

For Googlers: the relevant attribute seems to be `_rp_forest`. Deleting this allowed the UMAP objects to be pickled.

:+1: This is probably the most useful feature of vim-fugitive!

:+1: I got bitten by this

Ok, that's what I figured, but I'll look into `rebuild_indexes`. Thanks!