Leafmap tutorials hang without loading widgets about leafmap

[robbibt]

Hmm, it looks like this issue is actually coming from installing xarray_leaflet a part of the 05_load_raster.ipynb notebook. This updates our versions of ipyleaflet and ipywidget from

0.13.0
7.5.1

to

0.13.6
7.6.3

Which then seems to break any interactive leaflet plotting ability within our Jupyterhub environment.

[giswqs]

Thanks for reporting. This seems to be an issue caused by ipyleaflet rather than leafmap. I just tested the Sandbox by upgrading ipyleaflet (!pip install -U ipyleaflet) before installing anything else (e.g., leafmap, xarray_leaflet), and I got the same Loading widget error. A similar issue was reported with the geemap package before (see gee-community/geemap#31). However, it seems the previouly working solution no longer works. I am not sure what internal change ipyleaflet has made that's causing the issue. I would encourage you to report it on the ipyleaflet GitHub repository.

As an alternative, you can try out the leafmap binder environments created using this environment.yml.

• https://gishub.org/leafmap-pangeo
• https://gishub.org/leafmap-binder
• https://gishub.org/leafmap-lab

[giswqs]

One workaround is to downgrade ipyleaflet back to 0.13.0 (!pip install ipyleaflet==0.13.0) after installing leafmap. The map can be displayed correctly. However, the toolbar icons do not show up, but they still work.

[giswqs]

I am closing this issue for now as this requires a fix by the upstream ipyleaflet. Feel free to open an issue on the ipyleaflet GitHub repo https://github.com/jupyter-widgets/ipyleaflet/issues