pattern.md

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nbsphinx: hidden
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import folium
import folium.plugins

Pattern plugins

We have two pattern plugin classes: StripePattern and CirclePattern.

import requests

m = folium.Map([40.0, -105.0], zoom_start=6)

stripes = folium.plugins.pattern.StripePattern(angle=-45).add_to(m)

circles = folium.plugins.pattern.CirclePattern(
    width=20, height=20, radius=5, fill_opacity=0.5, opacity=1
).add_to(m)


def style_function(feature):
    default_style = {
        "opacity": 1.0,
        "fillColor": "#ffff00",
        "color": "black",
        "weight": 2,
    }

    if feature["properties"]["name"] == "Colorado":
        default_style["fillPattern"] = stripes
        default_style["fillOpacity"] = 1.0

    if feature["properties"]["name"] == "Utah":
        default_style["fillPattern"] = circles
        default_style["fillOpacity"] = 1.0

    return default_style

us_states = requests.get(
    "https://raw.githubusercontent.com/python-visualization/folium-example-data/main/us_states.json"
).json()

folium.GeoJson(
    us_states,
    smooth_factor=0.5,
     style_function=style_function,
).add_to(m)

m