[Discuss-gnuradio] argmax

[Abram Young]

List,
I'm having trouble with gr.argmax_fs()

gr.max_ss() seems to work fine returning the max value of a vector.  And 
(argmax, 0) works fine to return the vector position with the max value. 
But (argmax, 1) never returns anything but zero.

I'm probably missing something very obvious, such as a type mismatch or a 
fundamental misunderstanding, but...

---code snippet---

    src = usrp.source_s (0, decim, 1, gru.hexint(mux))

    s2f = gr.short_to_float()
    vec = gr.stream_to_vector(gr.sizeof_float, fft_size)
    fft = gr.fft_vfc(fft_size, True, [])
    abs = gr.complex_to_mag(fft_size)
    argmax = gr.argmax_fs(fft_size)
    dst1 = gr.file_sink (gr.sizeof_short, "out1")
    dst2 = gr.file_sink (gr.sizeof_short, "out2")

    fg.connect(src, s2f, vec, fft, abs, argmax)
    fg.connect((argmax, 0), dst1)
    fg.connect((argmax, 1), dst2)

---end code snippet---

the vector position of the max of a vector ends up in dst1, but all zeroes 
end up in dst2.

If you can correct whatever I've screwed up, thanks,


Abram Young                  Room:       PAS-367
Dept. of Physics             Voice:      520.621.6802
University of Arizona        E-mail:     address@hidden