As suggested in #812 this adds datashader operations to HoloViews, making it trivial to aggregate any Element type into an Image or stack of images and then shade it. The PR currently adds two main operations:
I've not yet written docstrings or any tests yet, but I do have the initial skeleton of a tutorial: https://anaconda.org/philippjfr/holoviews_datashader/notebook
Looks good to me!
There are a few other things we have discussed:
I also expect there will be some additional PRs for small fixes and general clean-up but this one is now ready to merge.