Folium: export coordinates from markers

Question

I'm looking for a way to export the coordinates from markers on the map in folium. I know that one can get the coordinates over the current mouse position, but I would like to use this information for another problem.

Ideally I would like to be able to move a marker and get the new coordinates of this marker. At the moment my markers are defined as follows:

def add_markers(coordinates, building):
  marker = folium.Marker(
    location=coordinates,
    popup=(f"<stong>{building}</stong>"),
    draggable=True)
  marker.add_to(map_with_markers)

When I move the marker on the map this is not saved anywhere and also the coordinates of the marker stay the same. Any ideas?

Answer 1

At least at Folium v0.13 that's not seem to be possible. Check issue #1578 in folium's github repository.

If you are using Jupyter to render your maps, I suggest you to try a different library like ipyleaflet. It has a great interactive features. Check this blog post for an example of what you ask for. I paste here a resume:

# Define a callback function for an event on a marker
def handle_observe(event):
    print(event)

# Call the callback function whenever the location of the marker changes
marker.observe(handle_observe, 'location')