错误提示:
使用matplotlib legend提示:ValueError: Unrecognized location ‘upper’. Valid locations are
plt.legend(title='参数where:',fontsize='xx-small',loc='upper')
Traceback (most recent call last):
File "09-plt-step.py", line 30, in <module>
plt.legend(title='参数where:',fontsize='xx-small',loc='upper')
File "D:\Python\Python38\lib\site-packages\matplotlib\pyplot.py", line 2738, in legend
return gca().legend(*args, **kwargs)
File "D:\Python\Python38\lib\site-packages\matplotlib\axes\_axes.py", line 417, in legend
self.legend_ = mlegend.Legend(self, handles, labels, **kwargs)
File "D:\Python\Python38\lib\site-packages\matplotlib\legend.py", line 455, in __init__
raise ValueError(
ValueError: Unrecognized location 'upper'. Valid locations are
best
upper right
upper left
lower left
lower right
right
center left
center right
lower center
upper center
center
错误原因:
1、使用matplotlib的legend图例说明时,说明位置参数loc=’upper’非法,没有’upper’类型的位置值
解决方法:
1、通过错误提示找到合法的位置值,可以使用下面这些字符串表示的位置,比如upper right表示右上角::
best
upper right
upper left
lower left
lower right
right
center left
center right
lower center
upper center
center
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