AttributeError: ‘numpy.ndarray‘ object has no attribute ‘fill_betweenx‘

Posted 2022-08-23 Data+Science+Insight

AttributeError: 'numpy.ndarray' object has no attribute 'fill_betweenx'

目录

AttributeError: 'numpy.ndarray' object has no attribute 'fill_betweenx'

问题：

解决：

完整错误：

---

问题：

计划棘突布局为4行2列，这样实际上轴的索引应该是双下标，既要指定行还要指定列。

使用subplots可视化多个基于标签分组的小提琴图；

此处的错误在于axs[index]

正确的应该是第一幅图为axs[0,0]，第二幅图为axs[0,1],第三幅图为axs[1,0]

以此类推。

f, axs = plt.subplots(4,2,figsize=(10,30))

# 

columns = ['a1','b1','a2','b2','a3','b3','a4','b4']

for index,col in enumerate(columns):
    print(index)
    sns.violinplot(x=df.label, y=df[col],ax=axs[index])

f.tight_layout()

解决：

因为要使用循环、所以干脆把子图设置为8行1列

f, axs = plt.subplots(8,1,figsize=(10,30))

# 

columns = ['a1','b1','a2','b2','a3','b3','a4','b4']

for index,col in enumerate(columns):
    print(index)
    sns.violinplot(x=df.label, y=df[col],ax=axs[index])

f.tight_layout()

完整错误：

AttributeError                            Traceback (most recent call last)
<ipython-input-1025-0aafcb9e325b> in <module>
      4 # make scatterplot with legends
      5 for index,col in enumerate(eda_columns):
----> 6     sns.violinplot(x=df.label, y=df[col],ax=axs[index])
      7 
      8 f.tight_layout()

D:\\anaconda\\lib\\site-packages\\seaborn\\_decorators.py in inner_f(*args, **kwargs)
     44             )
     45         kwargs.update(k: arg for k, arg in zip(sig.parameters, args))
---> 46         return f(**kwargs)
     47     return inner_f
     48 

D:\\anaconda\\lib\\site-packages\\seaborn\\categorical.py in violinplot(x, y, hue, data, order, hue_order, bw, cut, scale, scale_hue, gridsize, width, inner, split, dodge, orient, linewidth, color, palette, saturation, ax, **kwargs)
   2403         ax = plt.gca()
   2404 
-> 2405     plotter.plot(ax)
   2406     return ax
   2407 

D:\\anaconda\\lib\\site-packages\\seaborn\\categorical.py in plot(self, ax)
   1041     def plot(self, ax):
   1042         """Make the violin plot."""
-> 1043         self.draw_violins(ax)
   1044         self.annotate_axes(ax)
   1045         if self.orient == "h":

D:\\anaconda\\lib\\site-packages\\seaborn\\categorical.py in draw_violins(self, ax)
    759     def draw_violins(self, ax):
    760         """Draw the violins onto `ax`."""
--> 761         fill_func = ax.fill_betweenx if self.orient == "v" else ax.fill_between
    762         for i, group_data in enumerate(self.plot_data):
    763 

AttributeError: 'numpy.ndarray' object has no attribute 'fill_betweenx'