Python如何使用matplotlib绘制柱状图
作者：小黄鸭and小黑鸭
这篇文章主要介绍了Python如何使用matplotlib绘制柱状图问题,具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教
1、基本柱状图
首先要安装matplotlib（http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.plot） 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[i] = x[i] + 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()
总结
以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。