• python 下 tinker、matplotlib 混合编程示例一个


    该例是实现了 Tinker 嵌入 matplotlib 所绘制的蜡烛图(k 线),数据是从 csv 读入的。花一下午做的,还很粗糙,仅供参考。python 代码如下:

    import matplotlib
    import matplotlib.dates as mdates
    
    import pandas as pd
    
    from matplotlib.figure import Figure
    from matplotlib.finance import candlestick_ohlc
    from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
    from matplotlib.backend_bases import key_press_handler
    
    from numpy import arange, sin, pi
    
    matplotlib.use('TkAgg')
    
    import sys
    if sys.version_info[0] < 3:
        import Tkinter as Tk
    else:
        import tkinter as Tk
    
    root = Tk.Tk()
    root.wm_title("CNY exchange rate")
    root.iconbitmap('my_logo.ico') # read data data
    = pd.read_csv("data.csv", index_col=0, parse_dates=True) data = data.reset_index() data['Date2'] = data['Date'].apply(lambda d: mdates.date2num(d.to_pydatetime())) tuples = [tuple(x) for x in data[['Date2','Open','High','Low','Close']].values] # drawArea setup drawArea = Figure(figsize=(10, 5), dpi=100) ax = drawArea.add_axes([0.1, 0.2, 0.85, 0.7]) ax.spines['right'].set_color('none') ax.spines['top'].set_color('none') ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') ax.tick_params(axis='both', direction='out', width=2, length=8, labelsize=12, pad=8) ax.spines['left'].set_linewidth(2) ax.spines['bottom'].set_linewidth(2) ax.set_xticklabels(data['Date2'], rotation=45, horizontalalignment='right') ax.xaxis_date() ax.xaxis.set_major_formatter(mdates.DateFormatter("%Y-%m-%d")) ax.set_ylabel('Price ($)', size=17) candlestick_ohlc(ax, tuples, width=.5, colorup='r', colordown='g'); # a tk.canvas canvas = FigureCanvasTkAgg( drawArea, master=root) canvas.show() canvas.get_tk_widget().grid(row=1, columnspan=4) toolbar = NavigationToolbar2TkAgg(canvas, root) toolbar.update() toolbar.grid(row=2, columnspan=4) #canvas._tkcanvas.pack(side=Tk.TOP, fill=Tk.BOTH, expand=1) def _refresh(): ax.clear() data = pd.read_csv("data2.csv", index_col=0, parse_dates=True) data = data.reset_index() data['Date2'] = data['Date'].apply(lambda d: mdates.date2num(d.to_pydatetime())) tuples = [tuple(x) for x in data[['Date2','Open','High','Low','Close']].values] ax.spines['right'].set_color('none') ax.spines['top'].set_color('none') ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') ax.tick_params(axis='both', direction='out', width=2, length=8, labelsize=12, pad=8) ax.spines['left'].set_linewidth(2) ax.spines['bottom'].set_linewidth(2) ax.set_xticklabels(data['Date2'], rotation=45, horizontalalignment='right') ax.xaxis_date() ax.xaxis.set_major_formatter(mdates.DateFormatter("%Y-%m-%d")) ax.set_ylabel('Price ($)', size=17) candlestick_ohlc(ax, tuples, width=.5, colorup='r', colordown='g'); canvas.show() Tk.Label(root,text='Money').grid(row=0,column=0) defaultVar = Tk.StringVar(root) defaultVar.set("CNY") # default value moneyList = Tk.OptionMenu(root, defaultVar, "CNY", "USD", "EUR") moneyList.grid(row=0, column=1) btnRefresh = Tk.Button(master=root, text='Refresh', command=_refresh) btnRefresh.grid(row=0, column=3) Tk.mainloop()

    可以用来调试的数据一例,命名为 data.csv,与上面文件同目录即可:

    Date,Open,High,Low,Close
    2010-01-04,30.49,30.64,30.34,30.57
    2010-02-04,30.50,31.64,20.34,25.57
    2010-03-04,30.49,30.64,30.34,30.57
    2010-04-04,30.49,30.64,30.34,30.57
    2010-05-04,30.49,30.64,30.34,30.57
    2010-06-04,30.49,30.64,30.34,30.57
    2010-07-04,30,30.64,30.34,30.57
    2010-08-04,20.49,30.64,30.34,30.57
    2010-09-04,10.49,30.64,30.34,30.57
  • 相关阅读:
    微软一站式示例代码库(中文版)2010年12月10日更新
    微软一站式示例代码库(中文版)2011年1月12日更新
    微软一站式示例代码库 MSDN 官方论坛今天正式上线
    微软一站式示例代码浏览器 第二版 CTP发布
    两边固定中间子适应的流式布局
    不使用第三个变量交换两个数字
    身份证号码15位转18位 C#实现
    利用AspNetPager分页
    C#面向对象高级语法(一)
    String.Empty、string=”” 和null的区别
  • 原文地址:https://www.cnblogs.com/pied/p/5875838.html
Copyright © 2020-2023  润新知