User guide `ImageOverlay` example is missing the image file

[elliot-100]

At https://python-visualization.github.io/folium/latest/user_guide/ui_elements/layer_control.html, the example shows the error Could not find data/Mercator_projection_SW.png and the image is not displayed.

Presumably the image file is missing or misplaced.

Not sure why it's a PNG when the linked original source is a JPG? Seems to add a little bit of unneeded complexity.

folium is maintained by volunteers. Can you help making a fix for this issue?

I think so if I can find time to work out file hierarchy.

[elliot-100]

Looks like this is the only example that tries to load from a filepath instead of URL, so I guess the image would need to be added to https://github.com/python-visualization/folium/tree/main/docs/_static
rather than
https://github.com/python-visualization/folium-example-data ?

[Conengmo]

Good catch @elliot-100! I made a PR to address this.