matplotlib情节雅虎图api图情节

时间:2014-10-12 14:22:19

标签: python matplotlib

我只是开始学习matplotlib。我试图绘制雅虎char api情节股票。我正在尝试这个程序,但它不起作用......有我的程序

import numpy as np 
import matplotlib.pyplot as plt 
import matplotlib.dates as mdates

def graph():
    date, closep, highp, lowp, openp, valuep = np.loadtxt('/home/najeeb/Desktop/table.csv', delimiter=',', unpack=True,
                          converters={0: mdates.strpdate2num('%Y-%m-%d')})

   fig = plt.figure()
   ax1 = fig.add_subplot(1,1,1, axisbg='w')
   plt.plot_date(x=date, y=value, fmt='-')

   plt.title('title')
   plt.ylabel('value')
   plt.xlabel('date')
   plt.show()
graph()

here is CSV file

请指导我如何解决这个问题,并有另一种方法来绘制股票图...谢谢

1 个答案:

答案 0 :(得分:0)

CSV文件如下所示:

Date,Open,High,Low,Close,Volume,Adj Close
2014-10-17,97.50,99.00,96.81,97.67,68032200,97.67
2014-10-16,95.55,97.72,95.41,96.26,72110700,96.26
2014-10-15,97.97,99.15,95.18,97.54,100875400,97.54

您的代码np.loadtxt()试图解析标题'日期'作为一个日期,由于该字符串不是有效的日期值,因此无法正常工作,因此我使用skiprows=1跳过标题。

另一个问题是,CSV有7列,在你的元组中你只拆解了6个值

enter image description here

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
import urllib2


url = 'http://ichart.finance.yahoo.com/table.csv?s=AAPL&d=9&e=14&f=2008&g=d&a=8&b=7&c=1984&ignore=.csv'

def graph():
    date, open, high, low, close, volume, adj_close = np.loadtxt(urllib2.urlopen(url), skiprows=1, delimiter=',', unpack=True, converters={0: mdates.strpdate2num('%Y-%m-%d')})

    fig = plt.figure()
    ax1 = fig.add_subplot(1,1,1, axisbg='w')
    plt.plot_date(x=date, y=adj_close, fmt='-')

    plt.title('Apple, 1984 to 2008')
    plt.ylabel('Adjusted close')
    plt.xlabel('Date')
    plt.show()

graph()