Please add Folium pane

[MarcSkovMadsen]

My Pain

I would like Panel to be great and support the most common python visualization libraries and associated js libraries.

One such Python Package is Folium. You can use a Folium map in Panel using pn.pane.HTML but if you try to make the map interactive it redraws the whole _repr_html_ from scratch every time making the screen flickr.

Solution

Add panel Folium pane based on a Folium Bokeh model.

Additional Context

You can experience the flickr via this contribution #1189

[jbednar]

At the 2018 SciPy conference, l believe that the main author of Folium (https://github.com/ocefpaf) suggested that it was not something he was recommending that people use anymore; has that changed?

[MarcSkovMadsen]

Hi @jbednar . I did not attend and have not heard about that. Its not stated on Github or the web site either.

What I can see is that it is 7 times more starred than Panel and there is activity

[MarcSkovMadsen]

But @jbednar I guess the feature request should be extended to a Folium + Leaflet.js pane?

[philippjfr]

Doesn't seem to be stopping people:

[jbednar]

Ok, I've talked to Filipe, who clarified that Folium has a strong future as long as people realize that it is expected to remain a one-way street, constructing JS artifacts from Python without providing a pathway to return data back to Python/Jupyter/JupyterLab. If users need two-way communication of that sort, Filipe suggests they look to other tools like Bokeh or ipyleaflet.

With that in mind, providing a Folium Pane sounds very reasonable, so that people can make use of all the Folium examples that are out there! Filipe also clarified that Frank Conengmo (https://github.com/Conengmo) is the new Folium maintainer, and so we should follow up with him if we want to chat about the Folium roadmap.

[philippjfr]

A basic Folium pane was merged, and I don't think the flicker is actually avoidable because Folium does not have JS bindings which would allow us to update the map/plot incrementally.