Leafmap map does not rerender after code changes

[diehl]

Describe the bug

When writing Leafmap code to design maps in Marimo, I'm not able to get an updated version of the map rendered in the notebook without reloading the entire notebook. After making a code change, I rerun the cell and no update occurs. Needing to reload the entire notebook obviously makes the map development process even slower than a Jupyter notebook. I'd love to see this fixed as being able to run the notebook as an app straightaway makes the process of sharing maps extremely easy!

A simple code snippet that helps highlight the issue is the following. If you make changes to the viz height and rerun the cell, the resulting map does not change.

m = leafmap.Map(
    center=(-98.5795,39.8283),  # Center of the US
    zoom=3,                     # Initial zoom level
    height='500px'
)
m

Running this code with leafmap==0.39.2.

Environment

{
"marimo": "0.9.31",
"OS": "Darwin",
"OS Version": "23.6.0",
"Processor": "i386",
"Python Version": "3.11.10",
"Binaries": {
"Browser": "131.0.6778.109",
"Node": "v23.2.0"
},
"Dependencies": {
"click": "8.1.7",
"docutils": "0.21.2",
"itsdangerous": "2.2.0",
"jedi": "0.19.2",
"markdown": "3.6",
"narwhals": "1.13.5",
"packaging": "24.2",
"psutil": "6.1.0",
"pygments": "2.18.0",
"pymdown-extensions": "10.12",
"pyyaml": "6.0.2",
"ruff": "0.7.4",
"starlette": "0.41.2",
"tomlkit": "0.13.2",
"typing-extensions": "4.12.2",
"uvicorn": "0.32.0",
"websockets": "12.0"
},
"Optional Dependencies": {
"anywidget": "0.9.13",
"duckdb": "1.1.3",
"pandas": "2.2.3",
"pyarrow": "18.0.0"
}
}

Code to reproduce

import leafmap

# Making updates to the viz height and rerunning the cell leads to no update in the map
m = leafmap.Map(center=(-98.5795,39.8283), zoom=3, height='500px')
m

[mscolnick]

@diehl updates work for me, but i do see height not being respected. unsure but might be the internals of leafmap?

[diehl]

@mscolnick Roger that. FYI I noticed similarly when I was adding a logo to the map that my changes to the logo size were also not updating.

[mscolnick]

If you inspect your maps .to_html(), do you see the changes in there. If not, then it might be in the map, if you do see the changes, then marimo is probably responsible for its staleness.

This map is also the folium map (instead of the jupyter leaflet), so it may have a slight difference in features.

[diehl]

@mscolnick I just realized I left out two key details! I'm using the MapLibre backend. So when installing the package, I am usingpip install "leafmap[maplibre]". And the import is import leafmap.maplibregl as leafmap. Apologies for these omissions!

[mscolnick]

hey @diehl - happy to look at this. can you provide a full minimal repo? best would be a notebook run with marimo new --sandbox so the packages are also in the notebook

[diehl]

thank you @mscolnick! your message is so timely as I was thinking about circling back on this issue. being able to design maps interactively with Leafmap would be such a huge win! happy to help however I can make this happen. I'll circle back on this when I get some time to put this together! more soon...