使用matplotlib和tkinter的动态绘图图表

我正在做一些简单的绘制图表的应用程序。我从雅虎财经获得股票数据，我无法管理股票的“动态”选择。我敢肯定，我的“generateChard”功能工作正常，因为如果我摆脱应用程序的运行过程中选择股票，在编译之前设定的股票名称 - 它工作正常使用matplotlib和tkinter的动态绘图图表

import matplotlib 

matplotlib.use("TkAgg") 
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg 
from matplotlib.figure import Figure 
import matplotlib.animation as animation 
import matplotlib.pyplot as plt 
from matplotlib import style 
import matplotlib.dates as mdates 

import tkinter as tk 
from tkinter import * 

import urllib 
import json 

import pandas as pd 
import numpy as np 

style.use("dark_background") 

LARGE_FONT = ("Verdana", 12) 

f = Figure(figsize=(5, 5), dpi=100) 
graph = f.add_subplot(111) 


def bytespdate2num(fmt, encoding='utf-8'): 
    strconverter = mdates.strpdate2num(fmt) 

    def bytesconverter(b): 
     s = b.decode(encoding) 
     return strconverter(s) 

    return bytesconverter 


def generateChart(stock): 
    graph.clear() 
    stockPriceUrl = 'http://chartapi.finance.yahoo.com/instrument/1.0/' + stock + '/chartdata;type=quote;range=6m/csv' 

    sourceCode = urllib.request.urlopen(stockPriceUrl).read().decode() 

    stockData = [] 
    splitSource = sourceCode.split('\n') 

    for line in splitSource: 
     splitLine = line.split(',') 
     if len(splitLine) == 6: 
      if 'values' not in line and 'labels' not in line: 
       stockData.append(line) 

    date, closePrice, highPrice, lowPrice, openPrice, volume = np.loadtxt(stockData, delimiter=',', unpack=True, 
                      converters={0: bytespdate2num('%Y%m%d')}) 
    graph.plot_date(date, closePrice, '') 


class StockAnalyser(tk.Tk): 
    def __init__(self, *args, **kwargs): 
     tk.Tk.__init__(self, *args, **kwargs) 
     container = tk.Frame(self) 

     tk.Tk.wm_title(self, "Stock Analyser") 
     tk.Tk.minsize(self, width=350, height=200) 

     container.pack(side="top", fill="both", expand=True) 

     container.grid_rowconfigure(0, weight=1) 
     container.grid_columnconfigure(0, weight=1) 

     self.frames = {} 

     for F in (StartPage, StartPage2): 
      frame = F(container, self) 
      self.frames[F] = frame 
      frame.grid(row=0, column=0, sticky="nsew") 

     self.show_frame(StartPage) 

    def show_frame(self, cont): 
     frame = self.frames[cont] 
     frame.tkraise() 


class StartPage(tk.Frame): 
    def __init__(self, parent, controller): 
     tk.Frame.__init__(self, parent) 
     label = tk.Label(self, text="Pick graph stock exchange", font="LARGE_FONT") 
     label.pack(pady=10, padx=10) 

     stockEntry = tk.Entry(self) 
     stockEntry.pack() 

     button = tk.Button(self, text="next", 
          command=lambda: prepChart()) 
     button.pack() 

     def prepChart(): 
      generateChart(stockEntry.get()) 
      controller.show_frame(StartPage2) 


class StartPage2(tk.Frame): 
    def __init__(self, parent, controller): 
     tk.Frame.__init__(self, parent) 
     label = tk.Label(self, text="Graph page", font="LARGE_FONT") 
     label.pack(pady=10, padx=10) 

     button = tk.Button(self, text="back to home page", 
          command=lambda: controller.show_frame(StartPage)) 
     button.pack() 

     canvas = FigureCanvasTkAgg(f, self) 
     canvas.show() 

     toolbar = NavigationToolbar2TkAgg(canvas, self) 
     canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=True) 
     canvas._tkcanvas.pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True) 
     toolbar.update() 


app = StockAnalyser() 
app.mainloop()

来源

2017-05-14 ares1337

http://stackoverflow.com/questions/4098131/how-to-update-a-plot-in-matplotlib/4098938#4098938 –

谢谢！我设法解决这个问题，添加'动画'功能和标志，决定是否应该执行动画。也许这不是最好的选择，但与国旗完美的作品:) – ares1337

我设法解决这个问题，通过添加动画功能。我创建全局标志 - boolStartRefresingData，并设置股票名称也全球化，所以我可以做这样的事情：

def animate(self): 
    if boolStartRefreshingData==True: 
     generateChart() 

ani = animation.FuncAnimation(figure,animate,10)

我变更标识值为true，单击该按钮时，然后我改成了假的函数的结尾绘制图

来源

2017-05-14 20:36:59 ares1337

使用matplotlib和tkinter的动态绘图图表

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