# -*- coding: utf-8 -*-import pandas as pd
from matplotlib import pyplot as plthot_dog = pd.read_csv(r"matplotlib_bar/csv/hot-dog-contest-winners.csv")defplot():# ********* Begin *********#fig, ax = plt.subplots()#subplots返回画布和子图 ax.bar(hot_dog["Year"],hot_dog["Dogs eaten"])#绘制柱形图,第一个参数为x轴变量,第二个参数为y轴变量 plt.show()#显示图像 # ********* End *********#plt.savefig('matplotlib_bar/studentfile/studentanswer/level_1/US.png')plt.close()
第2关:“大胃王”比赛数据柱形图绘制——柱形图展示优化
# -*- coding: utf-8 -*-import pandas as pd
from matplotlib import pyplot as plthot_dog = pd.read_csv(r"matplotlib_bar/csv/hot-dog-contest-winners.csv")defplot():# ********* Begin *********#fig, ax = plt.subplots()#subplots返回画布和子图 ax.bar(hot_dog["Year"],hot_dog["Dogs eaten"],width=[0.6],color=unitedStatesColor())#添加指定的宽度ax.set_xlabel("Year")#设置x轴标签 ax.set_ylabel("Dogs Eaten")#设置y轴标签 ax.set_title("Hotdog game scores 1980-2010")#设置标题 ax.set_xlim(1979,2011)#设置x轴数据限值 plt.rcParams['figure.figsize']=(8.0,4.0)#设置figure_size尺寸 # ********* End *********#plt.savefig('matplotlib_bar/studentfile/studentanswer/level_2/US.png')plt.close()defunitedStatesColor():# ********* Begin *********# list=[]for i in hot_dog["Country"]:if i=='United States':list.append("#DB7093")#打破记录的年份显示为粉红色 else:list.append("#5F9F9F")#其余年份显示为灰绿色 returnlist# ********* End *********#