PySimpleGUI 清除按钮未清除 canvas。图表保留并添加到新图表

Question

清除按钮不会清除 canvas 上的 matplotlib 图。相反，它会在现有图表之上构建新图表。



    #clearing all the outputs 
    if event == '-BTNCLEAR-':

        window['-OUTPUT-'].Update('')
        window['-OUTPUT1-'].Update('')
        window['-OUTPUT2-'].Update('')
        window['-OUTPUT3-'].Update('')
        ax.cla()                       # to clear the canvas
        
        #window['-CANVAS-'].update('')
        #sg.Canvas.delete("all")
    window.refresh()
        

    
    
    
window.close()

Answer 1

您可能忘记更新更改

        ax.cla()                       # to clear the canvas
        fig_agg.draw()                 # to update the change

PySimpleGUI 清除按钮未清除 canvas。图表保留并添加到新图表

PySimpleGUI clear button isn't clearing the canvas. Graph remains and adds to the new graph

pysimplegui