python-visualization / python-visualization/folium

WmsTileLayer does not recognise transparent parameter

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Description

Describe the bug
WmsTileLayer is not recognising transparent=True parameter when using NASA WMS service.

To Reproduce

m = folium.Map(tiles="cartodbpositron")
wms_url = "https://gibs.earthdata.nasa.gov/wms/epsg4326/best/wms.cgi" 
wms = folium.raster_layers.WmsTileLayer(url=wms_url, layers="MODIS_Aqua_CorrectedReflectance_TrueColor", transparent=True,
fmt="image/png", name="Corrected Reflectance", 
styles="default", time="2023-09-22", overlay=True, show=True)
wms.add_to(m)
m

Expected behavior
I expect the black parts to be transparent

Environment (please complete the following information):

  • Jupyter Notebook
  • Python 3.9
  • folium latest version

Possible solutions
I already tried to include that parameter on kwargs, change True to "True", "true" and "True", but does not work.

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at folium.raster_layers.WmsTileLayer and reproduce the NASA WMS example in a Jupyter Notebook. Check how the transparent parameter is passed to the WMS request, then verify that the black parts render transparently with the provided layer configuration.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
58/100

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