Geopandas plot 为每个数据点而不是颜色条制作标签

Question

这是我的简单代码：

gdf_MA_outage.plot(column = 'total_customers_affected_by_city' , cmap = 'OrRd' , figsize = (16,16) , legend = True)

'total_customers_affected_by_city' 范围从 1 到 200000。它不是制作颜色条，而是为该列中的每一行制作标签。感谢任何帮助。

Answer 1

total_customers_affected_by_city 必须是字符串，因此它被视为分类。将其更改为数字列，您将获得一个颜色条。下面的代码显示了您描述的内容，我故意将列设置为字符串而不是数字。

import geopandas as gpd
import numpy as np

gdf_MA_outage = gpd.read_file(gpd.datasets.get_path("naturalearth_lowres")).loc[
    lambda d: (d["continent"] == "Europe") & (~d["iso_a3"].isin(["-99", "RUS"]))
]

gdf_MA_outage["total_customers_affected_by_city"] = np.random.randint(1, 200000, len(gdf_MA_outage)).astype(str)

gdf_MA_outage.plot(
    column="total_customers_affected_by_city",
    cmap="OrRd",
    figsize=(16, 16),
    legend=True,
)

Geopandas plot 为每个数据点而不是颜色条制作标签

Geopandas plot makes label for every datapoint instead of a colorbar

python

matplotlib

colorbar

geopandas