Python——使用matplotlib绘制柱状图 1、基本柱状图 首先要安装matplotlib( matplotlib.org/api/pyplot_…) 可以使用pip命令直接安装 # -*- coding: utf-8 -*- import matplotlib.pyplot as plt num_list = [1.5,0.6,7.8,6] plt.bar(range(len(num_list)), num_list) plt.show() 2、设置颜色 # -*- coding: utf-8 -*- import matplotlib.pyplot as plt
num_list = [1.5,0.6,7.8,6] plt.bar(range(len(num_list)), num_list,fc='r') plt.show() # -*- coding: utf-8 -*- import matplotlib.pyplot as plt
num_list = [1.5,0.6,7.8,6] plt.bar(range(len(num_list)), num_list,color='rgb') plt.show()
3、设置标签 # -*- coding: utf-8 -*- import matplotlib.pyplot as plt
name_list = ['Monday','Tuesday','Friday','Sunday'] num_list = [1.5,0.6,7.8,6] plt.bar(range(len(num_list)), num_list,color='rgb',tick_label=name_list) plt.show()
4、堆叠柱状图 # -*- coding: utf-8 -*- import matplotlib.pyplot as plt
name_list = ['Monday','Tuesday','Friday','Sunday'] num_list = [1.5,0.6,7.8,6] num_list1 = [1,2,3,1] plt.bar(range(len(num_list)), num_list, label='boy',fc = 'y') plt.bar(range(len(num_list)), num_list1, bottom=num_list, label='girl',tick_label = name_list,fc = 'r') plt.legend() plt.show() 5、并列柱状图 # -*- coding: utf-8 -*- import matplotlib.pyplot as plt
name_list = ['Monday','Tuesday','Friday','Sunday'] num_list = [1.5,0.6,7.8,6] num_list1 = [1,2,3,1] x =list(range(len(num_list))) total_width, n = 0.8, 2 width = total_width / n
plt.bar(x, num_list, width=width, label='boy',fc = 'y') for i in range(len(x)): x = x + width plt.bar(x, num_list1, width=width, label='girl',tick_label = name_list,fc = 'r') plt.legend() plt.show()
6、条形柱状图 # -*- coding: utf-8 -*- import matplotlib.pyplot as plt
name_list = ['Monday','Tuesday','Friday','Sunday'] num_list = [1.5,0.6,7.8,6] plt.barh(range(len(num_list)), num_list,tick_label = name_list) plt.show()
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