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 usingimport 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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