Re: [Discuss-gnuradio] fft display frequency spotting

[cswiger]

On Tue, 2 Aug 2005, cswiger wrote:

>    def Mouse(self,event):
>        fRel = ( event.GetX() - 48 ) / 15.2 - 20
>        print eng_notation.num_to_str(self.frequency + (fRel*1e3))
>
>

Even better than printing on the console is use ToolTips to display the
frequency your cursor pointer is on in a little pop up window that
slides along the bottom of the fft window:

   wx.ToolTip.Enable(True)
   wx.ToolTip.SetDelay(0)

   # for mouse position reporting on fft display
   em.eventManager.Register(self.Mouse, wx.EVT_MOTION, self.fft.win)


   def Mouse(self,event):
       freq = self.frequency + (((event.GetX() - 48) / 15.2 - 20) * 1e3)
       self.fft.win.SetToolTip(wx.ToolTip(eng_notation.num_to_str(freq)))


--Chuck