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HeatmapWithTime is visualized in the back of overlay image

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#1,400 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
css, javascript, python

Research direction

Start by reviewing the attached index.txt and reproducing the map using the HeatMapWithTime and ImageOverlay example in the issue. Trace how those layers are rendered and ordered in the saved html, then verify that the heatmap appears in front of the overlay while LayerControl and the existing map setup still work.

Written by the indexing model from the issue text.

Description

bug

HeatMapWithTime is visualized in the back of the overlay image, even after including <style>.leaflet-heatmap-layer{z-index:300 !important}</style> in my html.

According to https://github.com/python-visualization/folium/issues/1201, including this <style>.leaflet-heatmap-layer{z-index:300 !important}</style> in my html should bring the Heatmap to the front. However, that did not work.

My map looks like this:

Basemap

m = folium.Map([35, 41], tiles='stamentoner', zoom_start=6)

Land Use Changes

folium.raster_layers.ImageOverlay(
image=dataimage,
bounds=[[ymin, xmin], [ymax, xmax]],
colormap = lambda x: (x, x, x),
name= 'MODIS Transitions 2009 vs. 2017',
opacity=.8,
zindex=1,
overlay=False,
mercator_project=True).add_to(m)

UCDP HeatMap

hm = HeatMapWithTime(data=list(data.values()), # coordinates
index=list(data.keys()), # years
name = 'UCDP events',
radius=10,
auto_play=False,
max_opacity=1).add_to(m)

folium.LayerControl().add_to(m)
m.save('html/index.html')

My html header is attached:
index.txt

Dominant language
Python
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