如何在tkinter的按钮回调中更新matplotlib图？

Question

当用户单击具有新值和新范围的按钮时，我正在尝试更新Matplot图。我也在画布tkinter小部件内绘制该图。

我尝试将图形全局化，并用新值更新该图形，然后更新画布。

这是我的回调函数的代码：

def runAlgorithm(inputFileName,outputFileName,quantumTimeEntry,contextSwitchingTimeEntry,canvas):



    global figurePlotter
    if(not(contextSwitchingTimeEntry.isdigit()) or contextSwitchingTimeEntry==""):
        messagebox.showinfo("Error","Please Enter a positive context switching time ")
        return
    if(inputFileName=="" or outputFileName==""): 
        return

    if((not(quantumTimeEntry.isdigit()) or quantumTimeEntry=="" )and selectedAlgorithm=="RR"):
        messagebox.showinfo("Error","Please Enter a positive quantum Time ")
        return
    contextSwitchTime=int(contextSwitchingTimeEntry)

    if(selectedAlgorithm=="HPF"):
        hpf=HPF(contextSwitchTime,inputFileName)
        outputProcesses,detailedOutput=hpf.schedule()


    if(selectedAlgorithm=="FCFS"):
        fcfs=FCFS(contextSwitchTime)
        fcfs.read_processes(inputFileName)
        outputProcesses,detailedOutput=fcfs.schedule()
        print("FCFS")

    if(selectedAlgorithm=="SRTN"):
        srtn=SRTN(contextSwitchTime,inputFileName)
        outputProcesses,detailedOutput=srtn.schedule()
        print("SRTN")

    if(selectedAlgorithm=="RR"):
        quantumTime=int(quantumTimeEntry) 
        roundrobin=RoundRobin(quantumTime,contextSwitchTime,inputFileName)
        outputProcesses,detailedOutput=roundrobin.schedule()
        print("RR")   

    #print (detailedOutput)
    output2FileWriter=Output(outputFileName,outputProcesses)
    output2FileWriter.writeOutput()
    plotter = ProcessesPlotter()
    plt.clf()
    figurePlotter=plotter.plot(detailedOutput)
    #print(figurePlotter)
    #canvas.clear()
    #canvas = FigureCanvasTkAgg(figurePlotter, master=rowFourFrame)  # A tk.DrawingArea.
    #canvas.draw()
    #canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)
    canvas.get_tk_widget().update()