2 # Copyright 2001 Free Software Foundation, Inc.
4 # This file is part of GNU Radio
6 # GNU Radio is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3, or (at your option)
11 # GNU Radio is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with GNU Radio; see the file COPYING. If not, write to
18 # the Free Software Foundation, Inc., 51 Franklin Street,
19 # Boston, MA 02110-1301, USA.
22 function plotfft (data, sample_rate)
28 if ((m = nargchk (1,2,nargin)))
33 s = fft (data.*kaiser(len, 5));
35 incr = sample_rate/len;
36 min_x = -sample_rate/2;
37 max_x = sample_rate/2 - incr;
38 plot (min_x:incr:max_x, abs(fftshift(s)));