Volker Bergen

Installing `pynndescent` solved it for us as well. Worth adding it to the requirements or shouldn't it be a hard dependency?

Just saw this by chance. As we're planning to merge with scvelo's plotting modules soonish, that would simply become `scv.pl.scatter(adata, groups=[[c] for c in adata.obs['clusters'].cat.categories], color='clusters', ncols=4)`, simply passing a...

Any keyword suggestion? `groups='all'` as @gokceneraslan suggested?

@DHGK you can follow this [example](https://scvelo-notebooks.readthedocs.io/en/latest/DentateGyrus.html) to obtain velocities, and compute directed PAGA via ``` scv.tl.velocity_graph(adata) sc.tl.paga(adata) sc.tl.paga(adata, use_rna_velocity=True) sc.pl.paga(adata, transitions='transitions_confidence') ```

An example of applying directed PAGA can be found at https://scvelo.readthedocs.io/VelocityBasics.html.