Get zoom level

[giswqs]

Is it possible to get the zoom level of a map object? I saw a similar question at python-visualization/folium#1352, but there is no solution.

[bartboogmans]

map1.getZoom() gives me nothing

The leaflet class itself (which I believe is the superclass) does however show it in its documentation:
https://leafletjs.com/reference-1.6.0.html#map

>>        self.map1 = folium.Map(
        	tiles='Stamen Terrain',
        	zoom_start=zoom0,
        	location=coordinate
        )
>> zoomlevel = self.map1.getZoom()

'Map' object has no attribute 'getZoom'

[blackary]

@bartboogmans

If you add your map to the streamlit app with output = st_folium(self.map1), then output becomes a dictionary that has, among other things, a "zoom" key, so output["zoom"] will give you the current zoom-level of the map.

[bartboogmans]

The st_folium function seems to be designed for Streamlit apps, that not everybody might use (including me).

Such a dictionary would do the job though, so thats a good idea.
Any idea if/how one could access this dictionary in non streamlit apps?

[randyzwitch]

This package is specifically designed to work in Streamlit, that's its complete scope. Broadening to make this available in other packages would require some sort of plugin specification between various web app projects, which does not currently exist.

[bartboogmans]

Whoops, I did not see that it was specifically for the combination with streamlit. I thought it was a general topic, so you're right to point this out.