python+numpy+scipy=matlab,抛弃matlab

本文主要介绍如何利用python实现matlab的功能，实现这个功能要用到python的三个第三方库，基于的操作系统是archlinux。其他的系统也是同样的方法。

安装

• pyhton:就到官网下载安装，很多linux下是本身就安装的。

• linux系统安装numpy,scipy,matplotlib如下：

  <!--lang: shell-->
  #archlinux系统下
  pacman -S python-numpy python-scipy python-matplotlib 
  #ubuntu系统下    
  sudo apt-get install python-numpy python-scipy python-matplotlib 
  

• windows系统安装numpy,scipy,matplotlib如下：
  到Unofficial Windows Binaries for Python Extension Packages中找到相应的版本
  的三个软件安装即可，具体过程和所有的windows安装一样

实例

创建一个python的脚本，将下面代码复制好，运行后你会看到美丽的画面：

• 代码如下：

  
  #!/usr/bin/env python
  
  """
  Show how to make date plots in matplotlib using date tick locators and
  formatters.  See major_minor_demo1.py for more information on
  controlling major and minor ticks
  """
  from __future__ import print_function
  import datetime
  from pylab import figure, show
  from matplotlib.dates import MONDAY
  from matplotlib.finance import quotes_historical_yahoo
  from matplotlib.dates import MonthLocator, WeekdayLocator, DateFormatter
  
  date1 = datetime.date( 2002, 1, 5 )
  date2 = datetime.date( 2003, 12, 1 )
  
  # every monday
  mondays   = WeekdayLocator(MONDAY)
  
  # every 3rd month
  months    = MonthLocator(range(1,13), bymonthday=1, interval=3)
  monthsFmt = DateFormatter("%b '%y")
  
  quotes = quotes_historical_yahoo('INTC', date1, date2)
  if len(quotes) == 0:
      print ('Found no quotes')
      raise SystemExit
  
  dates = [q[0] for q in quotes]
  opens = [q[1] for q in quotes]
  
  fig = figure()
  ax = fig.add_subplot(111)
  ax.plot_date(dates, opens, '-')
  ax.xaxis.set_major_locator(months)
  ax.xaxis.set_major_formatter(monthsFmt)
  ax.xaxis.set_minor_locator(mondays)
  ax.autoscale_view()
  #ax.xaxis.grid(False, 'major')
  #ax.xaxis.grid(True, 'minor')
  ax.grid(True)
  
  fig.autofmt_xdate()
  
  show()
  

• 运行结果：