python-3.x - 更改绘图时如何始终更新矩形选择器？

Question

当我打开文件并绘制它时出现问题图在同一个情节：

self.RS = RectangleSelector(self.axes,self.line_select_callback,
                                       drawtype='box', useblit=False,
                                       button=[1, 3],minspanx=5, minspany=5,
                                       spancoords='pixels',
                                       interactive=True, rectprops = dict(facecolor='None',edgecolor='red',alpha=5,fill=False))

        self.RS.to_draw.set_visible(True)
        self.RS.extents = (0,10,0,10)

    def line_select_callback(self, eclick, erelease):
        'eclick and erelease are the press and release events'
        x1, y1 = eclick.xdata, eclick.ydata
        x2, y2 = erelease.xdata, erelease.ydata
        self.zoom_axes=[x1,x2,y1,y2]

谢谢你

Answer 1

在声明self.RS使用以下内容之前：

    try:
        self.RS.set_visible(False)
    except:
        pass