diff options
Diffstat (limited to 'gnuradio-core/src/utils/gr_plot_iq.py')
| -rwxr-xr-x | gnuradio-core/src/utils/gr_plot_iq.py | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/gnuradio-core/src/utils/gr_plot_iq.py b/gnuradio-core/src/utils/gr_plot_iq.py deleted file mode 100755 index f1f1c1052..000000000 --- a/gnuradio-core/src/utils/gr_plot_iq.py +++ /dev/null @@ -1,182 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2007,2008 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 -except ImportError: - print "Please install SciPy to run this script (http://www.scipy.org/)" - raise SystemExit, 1 - -try: - from pylab import * -except ImportError: - print "Please install Matplotlib to run this script (http://matplotlib.sourceforge.net/)" - raise SystemExit, 1 - -from optparse import OptionParser - -matplotlib.interactive(True) -matplotlib.use('TkAgg') - -class draw_fft: - def __init__(self, filename, options): - self.hfile = open(filename, "r") - self.block_length = options.block - self.start = options.start - self.sample_rate = options.sample_rate - - self.datatype = scipy.complex64 - self.sizeof_data = self.datatype().nbytes # number of bytes per sample in file - - self.axis_font_size = 16 - self.label_font_size = 18 - self.title_font_size = 20 - self.text_size = 22 - - # Setup PLOT - self.fig = figure(1, figsize=(16, 9), 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(0.40, 0.88, ("Block Size: %d" % self.block_length), - weight="heavy", size=self.text_size) - self.text_sr = figtext(0.60, 0.88, ("Sample Rate: %.2f" % self.sample_rate), - weight="heavy", size=self.text_size) - self.make_plots() - - self.button_left_axes = self.fig.add_axes([0.45, 0.01, 0.05, 0.05], frameon=True) - self.button_left = Button(self.button_left_axes, "<") - self.button_left_callback = self.button_left.on_clicked(self.button_left_click) - - self.button_right_axes = self.fig.add_axes([0.50, 0.01, 0.05, 0.05], frameon=True) - 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.manager = get_current_fig_manager() - connect('key_press_event', self.click) - show() - - def get_data(self): - self.text_file_pos.set_text("File Position: %d" % (self.hfile.tell()//self.sizeof_data)) - 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): - print "End of File" - else: - self.reals = [r.real for r in self.iq] - self.imags = [i.imag for i in self.iq] - self.time = [i*(1/self.sample_rate) for i in range(len(self.reals))] - - def make_plots(self): - # if specified on the command-line, set file pointer - self.hfile.seek(self.sizeof_data*self.start, 1) - - self.get_data() - - # Subplot for real and imaginary parts of signal - self.sp_iq = self.fig.add_subplot(2,1,1, position=[0.075, 0.14, 0.85, 0.67]) - self.sp_iq.set_title(("I&Q"), fontsize=self.title_font_size, fontweight="bold") - self.sp_iq.set_xlabel("Time (s)", fontsize=self.label_font_size, fontweight="bold") - self.sp_iq.set_ylabel("Amplitude (V)", fontsize=self.label_font_size, fontweight="bold") - self.plot_iq = plot(self.time, self.reals, 'bo-', self.time, self.imags, 'ro-') - self.sp_iq.set_ylim([1.5*min([min(self.reals), min(self.imags)]), - 1.5*max([max(self.reals), max(self.imags)])]) - - draw() - - def update_plots(self): - self.plot_iq[0].set_data([self.time, self.reals]) - self.plot_iq[1].set_data([self.time, self.imags]) - self.sp_iq.set_ylim([1.5*min([min(self.reals), min(self.imags)]), - 1.5*max([max(self.reals), max(self.imags)])]) - draw() - - def click(self, event): - forward_valid_keys = [" ", "down", "right"] - backward_valid_keys = ["up", "left"] - - if(find(event.key, forward_valid_keys)): - self.step_forward() - - elif(find(event.key, backward_valid_keys)): - self.step_backward() - - def button_left_click(self, event): - self.step_backward() - - def button_right_click(self, event): - self.step_forward() - - def step_forward(self): - self.get_data() - self.update_plots() - - def step_backward(self): - # Step back in file position - if(self.hfile.tell() >= 2*self.sizeof_data*self.block_length ): - self.hfile.seek(-2*self.sizeof_data*self.block_length, 1) - else: - self.hfile.seek(-self.hfile.tell(),1) - self.get_data() - self.update_plots() - - - -#FIXME: there must be a way to do this with a Python builtin -def find(item_in, list_search): - for l in list_search: - if item_in == l: - return True - return False - -def main(): - usage="%prog: [options] input_filename" - description = "Takes a GNU Radio complex binary file and displays the I&Q data versus time. You can set the block size to specify how many points to read in at a time and the start position in the file. By default, the system assumes a sample rate of 1, so in time, each sample is plotted versus the sample number. To set a true time axis, set the sample rate (-R or --sample-rate) to the sample rate used when capturing the samples." - - parser = OptionParser(conflict_handler="resolve", usage=usage, description=description) - parser.add_option("-B", "--block", type="int", default=1000, - help="Specify the block size [default=%default]") - parser.add_option("-s", "--start", type="int", default=0, - help="Specify where to start in the file [default=%default]") - parser.add_option("-R", "--sample-rate", type="float", default=1.0, - help="Set the sampler rate of the data [default=%default]") - - (options, args) = parser.parse_args () - if len(args) != 1: - parser.print_help() - raise SystemExit, 1 - filename = args[0] - - dc = draw_fft(filename, options) - -if __name__ == "__main__": - try: - main() - except KeyboardInterrupt: - pass - - - |