Using tkinter — How to clear FigureCanvasTkAgg object if exists or similar?

Question

Trying to create a tkinter based window that allows user to create a chart on button click, refreshing the chart -- not adding another, each time. All without creating a new

Answer 1

For your current setup, just add a try clause at the start of your plot function.

def plot(self):   
    try: 
        self.wierdobject.get_tk_widget().pack_forget()
    except AttributeError: 
        pass                
    f=Figure(figsize=(5,1)) 
    aplt=f.add_subplot(111)       
    aplt.plot([1,2,3,4]) 
    self.wierdobject = FigureCanvasTkAgg(f, master=self.frame1) 
    self.wierdobject.get_tk_widget().pack() 
    self.wierdobject.draw()