地理数据框地图图似乎忽略了legend_kwds

时间:2019-10-29 22:51:46

标签: python geopandas

我正在尝试使用地理数据框编辑地图图例的图例参数。我的问题是legend_kwds似乎被忽略了。

提前感谢您的时间!

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')

结果是此图:

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')

结果完全相同。... Is the same...

你知道怎么了吗?

更新2

在将geopandas成功更新为0.6.1后...我仍然遇到同样的问题...图形不会随着legend_kwds参数而改变。

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

再次感谢您抽出宝贵的时间!


# Name                    Version                   Build  Channel
_ipyw_jlab_nb_ext_conf    0.1.0                    py37_0  
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backports.functools_lru_cache 1.5                        py_2  
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backports.tempfile        1.0                        py_1  
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bkcharts                  0.2                      py37_0  
blas                      1.0                         mkl  
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llvm-openmp               4.0.1                hcfea43d_1  
llvmlite                  0.29.0           py37h98b8051_0  
locket                    0.2.0                    py37_1  
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mapclassify               2.1.1                    pypi_0    pypi
markupsafe                1.1.1            py37h1de35cc_0  
matplotlib                3.1.1            py37h54f8f79_0  
mccabe                    0.6.1                    py37_1  
mistune                   0.8.4            py37h1de35cc_0  
mkl                       2019.4                      233  
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mock                      3.0.5                    py37_0  
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py                        1.8.0                    py37_0  
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python-libarchive-c       2.8                     py37_13  
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sqlite                    3.30.0               ha441bb4_0  
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unicodecsv                0.14.1                   py37_0  
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xz                        5.2.4                h1de35cc_4  
yaml                      0.1.7                hc338f04_2  
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zlib                      1.2.11               h1de35cc_3  
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1 个答案:

答案 0 :(得分:0)

您需要将geopandas升级到v 0.6。然后尝试运行此修改后的代码:

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')

修改

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