reference other engineer's code to explain wheather linux terminal can display matplotlib' figure

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柱状图（plt.bar）

代码与注释

import numpy as npfrom matplotlib import pyplot as pltplt.figure(figsize=(9,6))n = 8X = np.arange(n)+1#X是1,2,3,4,5,6,7,8,柱的个数# numpy.random.uniform(low=0.0, high=1.0, size=None), normal#uniform均匀分布的随机数，normal是正态分布的随机数，0.5-1均匀分布的数，一共有n个Y1 = np.random.uniform(0.5,1.0,n)Y2 = np.random.uniform(0.5,1.0,n)plt.bar(X,Y1,width = 0.35,facecolor = 'lightskyblue',edgecolor = 'white')#width:柱的宽度plt.bar(X+0.35,Y2,width = 0.35,facecolor = 'yellowgreen',edgecolor = 'white')#水平柱状图plt.barh，属性中宽度width变成了高度height#打两组数据时用+#facecolor柱状图里填充的颜色#edgecolor是边框的颜色#想把一组数据打到下边，在数据前使用负号#plt.bar(X, -Y2, width=width, facecolor='#ff9999', edgecolor='white')#给图加textfor x,y in zip(X,Y1):    plt.text(x+0.3, y+0.05, '%.2f' % y, ha='center', va= 'bottom')for x,y in zip(X,Y2):    plt.text(x+0.6, y+0.05, '%.2f' % y, ha='center', va= 'bottom')plt.ylim(0,+1.25)plt.show()

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