How to display constellation in gnuradio

How to display constellation in gnuradio? I know that uhd_fft.py can
show a window, but there is not anything what i need. I appreciate any
help, thanks a lot in advance.

BR
guojun

On 09/04/2011 04:42 AM, guojun chang wrote:

How to display constellation in gnuradio? I know that uhd_fft.py can
show a window, but there is not anything what i need. I appreciate any
help, thanks a lot in advance.

The both the qtgui sink and wxgui scope sink has an XY mode to plot
complex input.

-josh

I have found it, but i’d like to add FFT before sopesink2 of wxgui,
there a error in it. the error info is “itemsize mismatch:gr uhd usrp
source(1):0 using 8,fft_vcc_fftw(14):0 using 4096”,how to have their
itemsizi matched?

2011/9/5 Josh B. [email protected]: