绘制多个条形图时以科学记数法表示的 Y 轴标签

问题描述

我试图将多个条形图绘制为子图,但 y 轴不断获得科学记数法值。我运行的初始代码是:

from matplotlib import pyplot as plt
fig,axes = plt.subplots(7,3,figsize = (25,40)) # axes is a numpy array of pyplot Axes
axes = iter(axes.ravel())  
cat_columns=['Source','Side','State','Timezone','Amenity','Bump','Crossing','Give_Way','Junction','No_Exit','Railway','Roundabout','Station','Stop','Traffic_Calming','Traffic_Signal','Turning_Loop','Sunrise_Sunset','Civil_Twilight','Nautical_Twilight','Astronomical_Twilight']
for col in cat_columns: 
    ax = df[col].value_counts().plot(kind='bar',label = col,ax=axes.__next__())  

输出如下所示:

enter image description here

fig,ax=axes.__next__())
    ax.ticklabel_format(uSEOffset=False,style='plain') 

使用此行后 ax.ticklabel_format(uSEOffset=False,style='plain') 我收到如下错误

enter image description here

请指导我解决这个错误

解决方法

您可以通过创建自定义 ScalarFormatter 对象并关闭科学记数法来关闭此功能。有关更多详细信息,请参阅 matplotlib 文档页面 on tick formatterson ScalarFormatter

# additional import statement at the top
from matplotlib import pyplot as plt
from matplotlib import ticker

# additional code for every axis
formatter = ticker.ScalarFormatter()
formatter.set_scientific(False)
ax.yaxis.set_major_formatter(formatter)