[Python Study Notes]水平柱状图绘制

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>>文件: 水平直方图.py

>>作者: liu yang

>>邮箱: liuyang0001@outlook.com

>>博客: www.cnblogs.com/liu66blog

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#!/usr/bin/env python

#  -*- coding: utf-8 -*-

import sys, os

import matplotlib

import matplotlib.pyplot as plt

# 定义要使用的字体,防止出现中文乱码

font=matplotlib.font_manager.FontProperties(fname=r"C:\Windows\Fonts\Deng.ttf")

# Horizontal histogram 水平直方图

def horizontal_histogram():

    # 先生成一个画布

    fig = plt.figure()

    # 生成数据

    x1 = [x for x in range(1, 9)]

    y1 = [n * 2 for n in range(1, 9)]

    x2 = [x for x in range(1, 9)]

    y2 = [x ** 2 for x in x2]

    # 画水平直方图

    l2=plt.barh(x2,y2,color='b')

    l1=plt.barh(x1,y1,color='g')

    # 设置

    plt.title("水平直方图",fontproperties=font)

    # 设置x，y轴标签

    plt.xlabel('数量',fontproperties=font)

    plt.ylabel('产品',fontproperties=font)

    # 设置刻度

    plt.xticks([x for x in range(0,80,4)])

    plt.yticks([y for y in range(0,9,1)])

    # 设置注解狂图示

    plt.legend(handles = [l1, l2,], labels = ['去年', '今年'], loc = 'best',prop=font)

    for x1,x2, y1, y2 in zip(x1,x2, y1, y2):

        # 添加文本时添加偏移量使其显示更加美观

        plt.text(y1+1.5 , x1-0.25, '%.0f' % y1, ha='center', va='bottom')

        plt.text(y2+1.5 , x2-0.25, '%.0f' % y2, ha='center', va='bottom')

    # 显示

    plt.show()

if __name__ == '__main__':

    histogram = horizontal_histogram()
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[Python Study Notes]水平柱状图绘制

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