python3使用matplotlib绘制条形图

本文实例为大家分享了python3使用matplotlib绘制条形图的具体代码，供大家参考，具体内容如下

绘制竖状条形图

代码

from matplotlib import pyplot as plt
from matplotlib import font_manager

my_font = font_manager.FontProperties(fname="/usr/share/fonts/truetype/arphic/ukai.ttc")
a = ["战狼2", "速度与激情8", "功夫瑜伽", "西游伏妖篇", "变形金刚5：最后的骑士", "摔跤吧！爸爸", "加勒比海盗5：死无对证", "金刚：骷髅岛", "极限特工：终极回归", "生化危机6：终章",
"乘风破浪", "神偷奶爸3", "智取威虎山", "大闹天竺", "金刚狼3：殊死一战", "蜘蛛侠：英雄归来", "悟空传", "银河护卫队2", "情圣", "新木乃伊", ]

b = [56.01, 26.94, 17.53, 16.49, 15.45, 12.96, 11.8, 11.61, 11.28, 11.12, 10.49, 10.3, 8.75, 7.55, 7.32, 6.99, 6.88,
6.86, 6.58, 6.23]
plt.figure(figsize=(15,7))
# 绘制条形图
plt.bar(range(len(a)),b,width=0.3)
# 对应x轴与字符串
plt.xticks(range(len(a)),a,fontproperties=my_font,rotation=90)
plt.savefig("./bar1.png")
plt.show()

效果图

绘制横状条形图

代码

# 绘制横着的条形图
from matplotlib import pyplot as plt
from matplotlib import font_manager

my_font = font_manager.FontProperties(fname="/usr/share/fonts/truetype/arphic/ukai.ttc")
a = ["战狼2", "速度与激情8", "功夫瑜伽", "西游伏妖篇", "变形金刚5：最后的骑士", "摔跤吧！爸爸", "加勒比海盗5：死无对证", "金刚：骷髅岛", "极限特工：终极回归", "生化危机6：终章",
"乘风破浪", "神偷奶爸3", "智取威虎山", "大闹天竺", "金刚狼3：殊死一战", "蜘蛛侠：英雄归来", "悟空传", "银河护卫队2", "情圣", "新木乃伊", ]

b = [56.01, 26.94, 17.53, 16.49, 15.45, 12.96, 11.8, 11.61, 11.28, 11.12, 10.49, 10.3, 8.75, 7.55, 7.32, 6.99, 6.88,
6.86, 6.58, 6.23]
plt.figure(figsize=(15, 7))
# 绘制条形图
plt.barh(range(len(a)), b, height=0.3,color='orange')
# 对应x轴与字符串
plt.yticks(range(len(a)), a, fontproperties=my_font, rotation=0)
# 添加网格 alpha参数是设置网格的透明度的
plt.grid(alpha=0.3)
# 保存图片
plt.savefig("./bar1.png")
plt.show()

效果图

需要注意的是横着的和竖着的条形图的区别在与横着的使用的是barh()方法,同时要注意它传参数的顺序是:

def barh(y, width, height=0.8, left=None, *, align='center', **kwargs):

绘制多次条形图

代码

from matplotlib import pyplot as plt
from matplotlib import font_manager

myfont = font_manager.FontProperties(fname="/usr/share/fonts/truetype/arphic/ukai.ttc")
a = ["猩球崛起3：终极之战","敦刻尔克","蜘蛛侠：英雄归来","战狼2"]
b_16 = [15746,312,4497,319]
b_15 = [12357,156,2045,168]
b_14 = [2358,399,2358,362]

bar_width = 0.25
x_14 = list(range(len(a)))
x_15 = list(i+bar_width for i in x_14)
x_16 = list(i+bar_width for i in x_15)
# 设置图形大小
plt.figure(figsize=(20,8),dpi=80)
plt.bar(range(len(a)),b_14,width=bar_width,label="9月14日")
plt.bar(x_15,b_15,width=bar_width,label="9月15日")
plt.bar(x_16,b_16,width=bar_width,label="9月16日")
# 设置图例
plt.legend(prop=myfont)
# 设置x轴刻度
plt.xticks(x_15,a,fontproperties=myfont)
plt.savefig("./mutiy.png")
plt.show()

效果图

来源：https://blog.csdn.net/qq_41009846/article/details/85017125