折线图
import pandas as pd
import matplotlib.pyplot as plt
iris = pd.read_csv(‘iris.csv’)
fig = plt.figure(figsize = (10, 10))
plt.plot(iris[‘sepal_width’],‘r–’,label=‘sepal_width’)
plt.legend(loc=‘best’)
散点图
import pandas as pd
import matplotlib.pyplot as plt
iris = pd.read_csv(‘iris.csv’)
fig = plt.figure(figsize = (10, 10))
plt.scatter(iris[‘sepal_length’],iris[‘petal_length’],label=‘petal&sepal_length’)
plt.legend(loc=‘best’)//系统自动取最适合值
plt.xlabel(‘sepal_length’)//设置x轴
plt.ylabel(‘petal_length’)
直方图
import pandas as pd
import matplotlib.pyplot as plt
iris = pd.read_csv(‘iris.csv’)
fig = plt.figure(figsize = (10, 10))
plt.hist(iris[‘petal_width’],label=‘petal_width’)
plt.legend(loc=‘best’)
箱线图
import pandas as pd
import matplotlib.pyplot as plt
iris = pd.read_csv(‘iris.csv’)
fig= plt.figure(figsize = (10, 10))
plt.boxplot(iris[‘petal_length’])
plt.title(‘box plot’) //设置标题
plt.ylabel(‘data content’) //设置坐标轴名称