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45 lines
1.0 KiB
45 lines
1.0 KiB
import pandas as pd
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import folium
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from folium.plugins import HeatMap
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import numpy as np
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# 1. 定义朱诺市的中心坐标
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juneau_center = [58.3019, -134.4197]
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# 2. 生成模拟数据（确保权重是数值类型）
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np.random.seed(42)
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num_points = 50
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lats = np.random.normal(juneau_center[0], 0.1, num_points)
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lons = np.random.normal(juneau_center[1], 0.1, num_points)
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weights = np.random.rand(num_points) # 确保权重是浮点数
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data = [[lat, lon, weight] for lat, lon, weight in zip(lats, lons, weights)]
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# 3. 创建地图对象
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m = folium.Map(
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location=juneau_center,
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zoom_start=12,
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tiles="cartodbpositron"
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)
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# 4. 修复关键点：将 gradient 的键改为字符串格式
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HeatMap(
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data,
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radius=20,
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blur=15,
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max_zoom=13,
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gradient={'0.4': 'blue', '0.6': 'lime', '1': 'red'} # 键改为字符串
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).add_to(m)
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# 5. 标记市中心
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folium.Marker(
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location=juneau_center,
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popup="Juneau, Alaska",
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icon=folium.Icon(color="green")
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).add_to(m)
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# 6. 保存地图
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m.save("juneau_heatmap.html")
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# 在Jupyter中显示
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# m |