Multiple checkboxes to select which plots to show

[Rita Roxo]

Hello,

I am trying to make an app to plot the signals received from a microcontroller. The main point is to be able to plot the signal from the different channels. I created different checkboxes in order to be able to choose from which channel I want to plot the data. 

I have this code for one checkbox and it works:

def plot_channels(self,ch): 

        self.view = pg.GraphicsView()

        self.view.show()

        

        if ch.text() == "Channel 0":

            if ch.isChecked() == True:

                self.dataPlot_0 = np.sin(np.linspace(0, 5 *np.pi , 2000))

        

                self.graph_0 = pg.PlotItem()

                self.graph_0.plot(self.dataPlot_0)

                self.lay = pg.GraphicsLayout()                    

                self.lay.addItem(self.graph_0)

                self.view.setCentralItem(self.lay)

                #self.view.showMaximized()

However, when I create a second checkbox related to another channel and also check it another window appears with the second signal and replace the first one.

I want to have only one window when the different plots appear as soon I check the respective checkbox.

Can someone help me to figure it out?

Thank you for the time and help.

Regards,

RR