HeatMap doesn't use weights

I spend quite some time tracking down this bug. I think it should be fixed or the limitation should be clearly stated in the docs. This is a major time waster and makes a bad impression on this otherwise great package.

This is a major bug coming for the upstream Leaflet.heat project.

• https://github.com/python-visualization/folium/issues/496
• https://github.com/Leaflet/Leaflet.heat/issues/43
• https://github.com/Leaflet/Leaflet.heat/issues/74

Problem description

The plugins.HeatMap states that the points used to create the heat map can be weighted.

data (list of points of the form [lat, lng] or [lat, lng, weight])

However weights are simply ignored. This makes it useless for heatmaps that are based on a few points with different weights.

Expected Output

Weight should have impact. Or remove this option from the docs.

[Conengmo]

You can install folium with pip from the master branch like this: pip install git+https://github.com/python-visualization/folium.git

[Conengmo]

Note that you’re using v0.11.0 and we were talking about the master branch, which contains a fix for heatmaps and changes its behavior slightly. With the fix, max_val is deprecated.