Re: [Discuss-gnuradio] output of gr.argmax & gr.max

[Tim Meehan]

I do this by sending the value of argmax to the gui using number_sink for the gui. 
BTW I sent a message to this list the other day questioning the "-20*math.log10(self.fft_size)..."
in the line below (taken from your code above).  I argue it should be "-10*math.log10(self.fft_size)..."
[from Brook Lin]  self.fft_size,-20*math.log10(self.fft_size)-10*math.log10(power/self.fft_size))
Any comments?

Here is some quick code to display the max index of the FFT output in a gui

        ss2v = gr.streams_to_vector(gr.sizeof_gr_complex, 128)
        pick_one = gr.keep_one_in_n(gr.sizeof_gr_complex * 128,1024)
        my_fft = gr.fft_vcc(128,1,[])
        my_mag = gr.complex_to_mag(128)
        my_argmax = gr.argmax_fs(128)
        my_s2f = gr.short_to_float()
        self.my0_s2f = gr.short_to_float()

        self.connect(self.chan_filt,ss2v,pick_one,my_fft,my_mag,(my_argmax,0))
        self.connect((my_argmax,0),self.my0_s2f,self.my0_probe)
        self.connect((my_argmax,1),my_s2f,self.my_probe)

#Now in the gui area

        self.my_number = numbersink2.number_sink_f(self.panel,label= "maxIndex",decimal_places=2)

            self.connect (self.my0_s2f, self.my_number)
            vbox.Add (self.my_number.win, 4, wx.EXPAND)



Tim

On Tue, Mar 11, 2008 at 10:26 PM, Brook Lin <address@hidden> wrote:

And I also want to show this maximum value on the status bar in wxgui, which
shows the fft plot in the gnuradio-example. Any suggestion?

In short, when I run usrp_fft.py, how can I show the peak value on the wxgui
window? Can I do it like what I did now?(I mean the code I attached
previously). If not, do you have some good idea to do it?

Thanks,

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