diff options
Diffstat (limited to 'gr-utils/src/python/plot_fft_base.py')
| -rwxr-xr-x | gr-utils/src/python/plot_fft_base.py | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/gr-utils/src/python/plot_fft_base.py b/gr-utils/src/python/plot_fft_base.py index 0b5df504b..4afdc3a36 100755 --- a/gr-utils/src/python/plot_fft_base.py +++ b/gr-utils/src/python/plot_fft_base.py @@ -1,24 +1,24 @@ #!/usr/bin/env python # # Copyright 2007,2008,2011 Free Software Foundation, Inc. -# +# # This file is part of GNU Radio -# +# # GNU Radio is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3, or (at your option) # any later version. -# +# # GNU Radio is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. -# +# # You should have received a copy of the GNU General Public License # along with GNU Radio; see the file COPYING. If not, write to # the Free Software Foundation, Inc., 51 Franklin Street, # Boston, MA 02110-1301, USA. -# +# try: import scipy @@ -54,7 +54,7 @@ class plot_fft_base: self.fig = figure(1, figsize=(16, 12), facecolor='w') rcParams['xtick.labelsize'] = self.axis_font_size rcParams['ytick.labelsize'] = self.axis_font_size - + self.text_file = figtext(0.10, 0.94, ("File: %s" % filename), weight="heavy", size=self.text_size) self.text_file_pos = figtext(0.10, 0.88, "File Position: ", weight="heavy", size=self.text_size) self.text_block = figtext(0.35, 0.88, ("Block Size: %d" % self.block_length), @@ -77,7 +77,7 @@ class plot_fft_base: connect('draw_event', self.zoom) connect('key_press_event', self.click) show() - + def get_data(self): self.position = self.hfile.tell()/self.sizeof_data self.text_file_pos.set_text("File Position: %d" % (self.position)) @@ -87,7 +87,7 @@ class plot_fft_base: print "End of File" else: self.iq_fft = self.dofft(self.iq) - + tstep = 1.0 / self.sample_rate #self.time = scipy.array([tstep*(self.position + i) for i in xrange(len(self.iq))]) self.time = scipy.array([tstep*(i) for i in xrange(len(self.iq))]) @@ -107,7 +107,7 @@ class plot_fft_base: Fn = 0.5 * sample_rate freq = scipy.array([-Fn + i*Fs for i in xrange(N)]) return freq - + def make_plots(self): # if specified on the command-line, set file pointer self.hfile.seek(self.sizeof_data*self.start, 1) @@ -125,7 +125,7 @@ class plot_fft_base: self.sp_fft.set_ylabel("Power Spectrum (dBm)", fontsize=self.label_font_size, fontweight="bold") self.get_data() - + self.plot_iq = self.sp_iq.plot([], 'bo-') # make plot for reals self.plot_iq += self.sp_iq.plot([], 'ro-') # make plot for imags self.draw_time() # draw the plot @@ -155,7 +155,7 @@ class plot_fft_base: self.xlim = self.sp_iq.get_xlim() draw() - + def zoom(self, event): newxlim = scipy.array(self.sp_iq.get_xlim()) curxlim = scipy.array(self.xlim) @@ -168,10 +168,10 @@ class plot_fft_base: iq = self.iq[xmin : xmax] time = self.time[xmin : xmax] - + iq_fft = self.dofft(iq) freq = self.calc_freq(time, self.sample_rate) - + self.plot_fft[0].set_data(freq, iq_fft) self.sp_fft.axis([freq.min(), freq.max(), iq_fft.min()-10, iq_fft.max()+10]) @@ -184,7 +184,7 @@ class plot_fft_base: if(find(event.key, forward_valid_keys)): self.step_forward() - + elif(find(event.key, backward_valid_keys)): self.step_backward() @@ -244,6 +244,6 @@ if __name__ == "__main__": main() except KeyboardInterrupt: pass - + |