根据电影数据画出折线图

#coding:utf-8

import numpy as np

import pandas as pd

import matplotlib as plt

import string

from pylab import *

mpl.rcParams['font.sans-serif'] = ['SimHei'] #指定默认字体

mpl.rcParams['axes.unicode_minus'] = False #解决保存图像是负号'-'显示为方块的问题

dfxy=pd.read_csv('xyfilm.csv',delimiter=';',names=['fn','date','bor'])

dfxypt=dfxy[['date','bor']]

dfpxy=dfxypt.sort_values(by= 'date', ascending=1)

dfpxy['bor'] =dfpxy['bor']/10.0

dfpxy.index=dfpxy['date']

del dfpxy['date']

plt.title(u"BOR中文")

plt.xlabel('day')

plt.ylabel('Box Office Return')

dfpxy['bor'].plot(style='rD--')

plt.show()