# 面积图 可以表示一个整的变化趋势fig,axes=plt.subplots(2,1,figsize=(8,6))#fig,axes=plt.subplots(2,1,figsize=(8,6))df1 = pd.DataFrame(np.random.rand(10, 4), columns=['a', 'b', 'c', 'd'])df2 = pd.DataFrame(np.random.randn(10, 4), columns=['a', 'b', 'c', 'd'])print(df1)df1.plot.area(colormap = 'Greens_r',alpha = 0.5,ax = axes[0])df2.plot.area(stacked=False,colormap = 'Set2',alpha = 0.5,ax = axes[1])#(True就会报错,因正负值不统一,无法堆叠)