Bokeh backend for holoviews doesn't seem to render properly

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Hi,

I’m not sure if this is a bug in Bokeh or HoloViews, but it is definitely a bug! I studied the Holoviews code for this. To summarize, the HoloViews code invokes the datashader library to create an rgba image as an xarray. It then builds a ColumnDataSource with { ‘image’: xarray_image_data } and other fields. Finally, it seems to instantiate a bokeh ImageRGBA glyph type with that data. Somewhere along the line, the good image (which I confirmed is being produced by datashader) gets corrupted - it looks suspiciously like a very simple resize operation that does some integer round-off of pixel positions.

Any help would be greatly appreciated!

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This issue could be due to changes in Bokeh 3, but if so, the fix is probably in HoloViews, so please file an issue at Issues · holoviz/holoviews · GitHub .

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