如何在Tkinter窗口中刷新matplotlib图?

我想知道是否有人想知道为什么在按下GUI上的按钮后,下面的代码为什么不显示带有线的图形。我想创建一个程序,该程序在通过单击按钮导入一组数据后执行一长串命令。这些命令之一将是在同一窗口内的图形上显示光谱数据。这是我到目前为止的内容:

# import modules that I'm using

import matplotlib

matplotlib.use('TKAgg')

from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg

from matplotlib.figure import Figure

import matplotlib.pyplot as pltlib

import Tkinter

from Tkinter import *

import numpy as np

import scipy as sc

#import matplotlib.pyplot as pltlib

# lmfit is imported becuase parameters are allowed to depend on each other along with bounds, etc.

from lmfit import minimize, Parameters, Minimizer

#Make object for application

class App_Window(Tkinter.Tk):

def __init__(self,parent):

Tkinter.Tk.__init__(self,parent)

self.parent = parent

self.initialize()

def initialize(self):

button = Tkinter.Button(self,text="Open File",command=self.OnButtonClick).pack(side=Tkinter.TOP)

self.canvasFig=pltlib.figure(1)

Fig = matplotlib.figure.Figure(figsize=(5,4),dpi=100)

FigSubPlot = Fig.add_subplot(111)

x=[]

y=[]

self.line1, = FigSubPlot.plot(x,y,'r-')

self.canvas = matplotlib.backends.backend_tkagg.FigureCanvasTkAgg(Fig, master=self)

self.canvas.show()

self.canvas.get_tk_widget().pack(side=Tkinter.TOP, fill=Tkinter.BOTH, expand=1)

self.canvas._tkcanvas.pack(side=Tkinter.TOP, fill=Tkinter.BOTH, expand=1)

self.resizable(True,False)

self.update()

def refreshFigure(self,x,y):

self.line1.set_xdata(x)

self.line1.set_ydata(y)

self.canvas.draw()

def OnButtonClick(self):

# file is opened here and some data is taken

# I've just set some arrays here so it will compile alone

x=[]

y=[]

for num in range(0,1000):x.append(num*.001+1)

# just some random function is given here, the real data is a UV-Vis spectrum

for num2 in range(0,1000):y.append(sc.math.sin(num2*.06)+sc.math.e**(num2*.001))

X = np.array(x)

Y = np.array(y)

self.refreshFigure(X,Y)

if __name__ == "__main__":

MainWindow = App_Window(None)

MainWindow.mainloop()

回答:

那是因为xaxis和yaxis的范围不会更改为新数据的范围,因此请更改您的refreshFigure,如下所示:

def refreshFigure(self,x,y):

self.line1.set_data(x,y)

ax = self.canvas.figure.axes[0]

ax.set_xlim(x.min(), x.max())

ax.set_ylim(y.min(), y.max())

self.canvas.draw()

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