facetgrid使用方法

1. 显示使用的数据

   %matplotlib inline
   import numpy as np
   import pandas as pd
   import seaborn as sns
   from scipy import stats
   import matplotlib as mpl
   import matplotlib.pyplot as plt
   
   sns.set(style="ticks")
   np.random.seed(sum(map(ord, "axis_grids")))
   tips = sns.load_dataset("tips")
   tips.head()
   

   运行结果：
   

2. 指定展示的信息

   g = sns.FacetGrid(tips, col="time")
   

   运行结果：
   

3. 透明度

   g = sns.FacetGrid(tips, col="sex", hue="smoker")
   g.map(plt.scatter, "total_bill", "tip", alpha=.7)
   g.add_legend();
   

   运行结果：
   

4. 其他应用

   g = sns.FacetGrid(tips, row="smoker", col="time", margin_titles=True)
   g.map(sns.regplot, "size", "total_bill", color=".1", fit_reg=False, x_jitter=.1);
   

   运行结果：
   

   g = sns.FacetGrid(tips, col="day", size=4, aspect=.5)
   g.map(sns.barplot, "sex", "total_bill");
   

   运行结果：
   

5. 绘制先后顺序

   from pandas import Categorical
   ordered_days = tips.day.value_counts().index
   print (ordered_days)
   ordered_days = Categorical(['Thur', 'Fri', 'Sat', 'Sun'])
   g = sns.FacetGrid(tips, row="day", row_order=ordered_days,
                     size=1.7, aspect=4,)
   g.map(sns.boxplot, "total_bill")
   

   运行结果：