Polygon (e.g. geojson) were colored incorrectly

[AndyW-llm]

Environment Information

• leafmap version: 0.2.0
• Python version: Python 3.9.4
• Operating System: Ubuntu 18.04.2 LTS

Description

Dear Professor Wu,
I would like seek your help on properly coloring geospatial features via leafmap. I was able to color the features, but the color were incorrect.
***edited ***
Looks like the fill_colors is supposed to randomly fill color, since the code document said,
"fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"]."

What I Did

1. create a basemap as m

2. Define geojson file path

file is available here

Testing.geojson.zip
file_path = os.path.join(folder, 'Testing.geojson')

3. read geojson for extracting color list at #4

gdf = gpd.read_file(file_path)
display(gdf)

4. Add geojson, with color list

m.add_geojson(file_path, layer_name="Test_Color", fill_colors=gdf['Test'])

Please see the attached images for demonstration.
I expected Maine to be shown in red, but it turns out green. In fact, the color pattern were random. If I rerun the code, the color sometimes changes.

[AndyW-llm]

The issue has been solved. There are two parameters in the function that allows user to customize the visualization (e.g. opacity, color). Here is how....
####1. Define a function
def fill_color(feature):
return {
"color": feature['properties']['Test'],
"fillColor": feature['properties']['Test'],
}
####2. (Optional) Change fill color, line color, and their opacity
style = {
# "stroke": True,
"color": "grey",
"weight": 0.5,
"opacity": 1,
# "fill": True,
# "fillColor": "#ffffff",
"fillOpacity": 0.9,
# "dashArray": "9"
# "clickable": True,
}
####3. Add the parameters into the function
m.add_geojson(file_path, layer_name=f"Test_Color",
style=style,
style_callback=red_color)
####4. Results