#!/usr/bin/env python
#
-# Copyright 2007,2008 Free Software Foundation, Inc.
+# Copyright 2007,2008,2011 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
rcParams['xtick.labelsize'] = self.axis_font_size
rcParams['ytick.labelsize'] = self.axis_font_size
- self.text_file = figtext(0.10, 0.95, ("File: %s" % filename), weight="heavy", size=self.text_size)
- self.text_file_pos = figtext(0.10, 0.92, "File Position: ", weight="heavy", size=self.text_size)
+ self.text_file = figtext(0.10, 0.95, ("File: %s" % filename),
+ weight="heavy", size=self.text_size)
+ self.text_file_pos = figtext(0.10, 0.92, "File Position: ",
+ weight="heavy", size=self.text_size)
self.text_block = figtext(0.35, 0.92, ("Block Size: %d" % self.block_length),
weight="heavy", size=self.text_size)
self.text_sr = figtext(0.60, 0.915, ("Sample Rate: %.2f" % self.sample_rate),
self.button_right = Button(self.button_right_axes, ">")
self.button_right_callback = self.button_right.on_clicked(self.button_right_click)
- self.xlim = self.sp_iq.get_xlim()
+ self.xlim = scipy.array(self.sp_iq.get_xlim())
self.manager = get_current_fig_manager()
connect('draw_event', self.zoom)
def get_data(self):
self.position = self.hfile.tell()/self.sizeof_data
self.text_file_pos.set_text("File Position: %d" % self.position)
- self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
- #print "Read in %d items" % len(self.iq)
- if(len(self.iq) == 0):
+ try:
+ self.iq = scipy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
+ except MemoryError:
print "End of File"
else:
tstep = 1.0 / self.sample_rate
- self.time = [tstep*(self.position + i) for i in xrange(len(self.iq))]
+ #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))])
self.iq_psd, self.freq = self.dopsd(self.iq)
-
+
def dopsd(self, iq):
''' Need to do this here and plot later so we can do the fftshift '''
overlap = self.psdfftsize/4
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
+ self.draw_time(self.time, self.iq) # draw the plot
self.plot_psd = self.sp_psd.plot([], 'b') # make plot for PSD
- self.draw_psd() # draw the plot
+ self.draw_psd(self.freq, self.iq_psd) # draw the plot
if self.dospec:
self.sp_spec.set_xlabel("Time (s)", fontsize=self.label_font_size, fontweight="bold")
self.sp_spec.set_ylabel("Frequency (Hz)", fontsize=self.label_font_size, fontweight="bold")
- self.draw_spec()
+ self.draw_spec(self.time, self.iq)
draw()
- def draw_time(self):
- reals = self.iq.real
- imags = self.iq.imag
- self.plot_iq[0].set_data([self.time, reals])
- self.plot_iq[1].set_data([self.time, imags])
- self.sp_iq.set_xlim(min(self.time), max(self.time))
- self.sp_iq.set_ylim([1.5*min([min(reals), min(imags)]),
- 1.5*max([max(reals), max(imags)])])
-
- def draw_psd(self):
- self.plot_psd[0].set_data([self.freq, self.iq_psd])
- self.sp_psd.set_ylim([min(self.iq_psd)-10, max(self.iq_psd)+10])
-
- def draw_spec(self):
+ def draw_time(self, t, iq):
+ reals = iq.real
+ imags = iq.imag
+ self.plot_iq[0].set_data([t, reals])
+ self.plot_iq[1].set_data([t, imags])
+ self.sp_iq.set_xlim(t.min(), t.max())
+ self.sp_iq.set_ylim([1.5*min([reals.min(), imags.min()]),
+ 1.5*max([reals.max(), imags.max()])])
+
+ def draw_psd(self, f, p):
+ self.plot_psd[0].set_data([f, p])
+ self.sp_psd.set_ylim([p.min()-10, p.max()+10])
+ self.sp_psd.set_xlim([f.min(), f.max()])
+
+ def draw_spec(self, t, s):
overlap = self.specfftsize/4
winfunc = scipy.blackman
self.sp_spec.clear()
- self.sp_spec.specgram(self.iq, self.specfftsize, self.sample_rate,
+ self.sp_spec.specgram(s, self.specfftsize, self.sample_rate,
window = lambda d: d*winfunc(self.specfftsize),
- noverlap = overlap, xextent=[min(self.time), max(self.time)])
+ noverlap = overlap, xextent=[t.min(), t.max()])
def update_plots(self):
- self.draw_time()
- self.draw_psd()
+ self.draw_time(self.time, self.iq)
+ self.draw_psd(self.freq, self.iq_psd)
if self.dospec:
- self.draw_spec()
+ self.draw_spec(self.time, self.iq)
- self.xlim = self.sp_iq.get_xlim() # so zoom doesn't get called
+ self.xlim = scipy.array(self.sp_iq.get_xlim()) # so zoom doesn't get called
+
draw()
def zoom(self, event):
newxlim = scipy.array(self.sp_iq.get_xlim())
curxlim = scipy.array(self.xlim)
- if(newxlim.all() != curxlim.all()):
- self.xlim = newxlim
- xmin = max(0, int(ceil(self.sample_rate*(self.xlim[0] - self.position))))
- xmax = min(int(ceil(self.sample_rate*(self.xlim[1] - self.position))), len(self.iq))
+ if(newxlim[0] != curxlim[0] or newxlim[1] != curxlim[1]):
+ #xmin = max(0, int(ceil(self.sample_rate*(newxlim[0] - self.position))))
+ #xmax = min(int(ceil(self.sample_rate*(newxlim[1] - self.position))), len(self.iq))
+ xmin = max(0, int(ceil(self.sample_rate*(newxlim[0]))))
+ xmax = min(int(ceil(self.sample_rate*(newxlim[1]))), len(self.iq))
iq = self.iq[xmin : xmax]
time = self.time[xmin : xmax]
iq_psd, freq = self.dopsd(iq)
- self.plot_psd[0].set_data(freq, iq_psd)
- self.sp_psd.axis([min(freq), max(freq),
- min(iq_psd)-10, max(iq_psd)+10])
+ self.draw_psd(freq, iq_psd)
+ self.xlim = scipy.array(self.sp_iq.get_xlim())
draw()
projects / debian / gnuradio / blobdiff