Comment (by Roland Haas):

In http://lists.einsteintoolkit.org/pipermail/users/2019-September/007016.html Erik says

My wife recommends "folium":
<https://anaconda.org/conda-forge/folium.> This is a Python package
talking to the "folium" Javascript library that displays the map.

Here is a simple example:
<https://nbviewer.jupyter.org/github/python-visualization/folium/blob/master/examples/ContinuousWorld.ipynb.>

In http://lists.einsteintoolkit.org/pipermail/users/2019-September/007015.html Niels says

The BHPToolkit map is made using the Google Maps - MyMaps service (www.google.com/mymaps <http://www.google.com/mymaps).> As we currently have a small number of users I have just been keeping the map up to date by hand. Unfortunately it does not look like there is a programatic way to use MyMaps (https://stackoverflow.com/questions/40488333/google-my-maps-api <https://stackoverflow.com/questions/40488333/google-my-maps-api).>

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/260/produce-map-of-et-users