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python - Geodataframe map 图似乎忽略了 legend_kwds

转载 作者:行者123 更新时间:2023-12-05 03:57:21 31 4
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我正在尝试使用地理数据框编辑 map 绘图的图例参数。我的问题是 legend_kwds 似乎被忽略了。

预先感谢您的宝贵时间!!

图形代码为:

fig, ax = plt.subplots(1, 1)
Q= Valores.plot(column=Columna_Criterio, ax=ax, cmap = 'viridis', linewidth=0, legend=True, legend_kwds={'fontsize':'xx-small','label': "Population by Country", 'orientation': "horizontal"})
ax.axis('off')

结果是这张图:

The cmap and linewidth parameters are modifying the graph, while the legend_kwds are not +

如果我删除 legend_kwds 参数:

fig, ax = plt.subplots(1, 1)
Q= Valores.plot(column=Columna_Criterio, ax=ax, cmap = 'viridis', linewidth=0, legend=True)
ax.axis('off')

结果完全一样.... Is the same...

你知道错在哪里吗?

更新 2

成功将 geopandas 更新到 0.6.1 后......我仍然遇到同样的问题......图表不会随着 legend_kwds 参数而改变。

我使用了@swatchai 代码建议,我能够修改标签字母大小但不能修改条形位置。

再次提前感谢您的宝贵时间!!


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最佳答案

您需要将 geopandas 升级到 v 0.6。然后尝试运行修改后的代码:

import matplotlib.pyplot as plt
import geopandas
import matplotlib

# set font size here
matplotlib.rcParams['font.size'] = 7

fig, ax = plt.subplots(1, 1, figsize=[9,6])

# --- more lines of code here ---

Q = Valores.plot(column=Columna_Criterio, ax=ax, cmap = 'viridis', \
linewidth=0, legend=True, \
legend_kwds={'label': "Population by Country", 'orientation': "horizontal"})

ax.axis('off')

编辑

这是使用世界数据的可运行代码。

import matplotlib.pyplot as plt
import geopandas

import matplotlib
# set font size
matplotlib.rcParams['font.size'] = 7

# make use of the provided world dataset
world = geopandas.read_file(geopandas.datasets.get_path('naturalearth_lowres'))

# drop some rows
world = world[(world.name != "Antarctica") & (world.name != "Fr. S. Antarctic Lands")]

fig, ax = plt.subplots(1, 1, figsize=[9,6])

myplot = world.plot(column='pop_est',
ax=ax, legend=True,
legend_kwds={'label': "Population by Country",
'orientation': "horizontal"})

输出图:

enter image description here

关于python - Geodataframe map 图似乎忽略了 legend_kwds,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58616454/

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