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[Commit-gnuradio] r7536 - in gnuradio/trunk: gnuradio-core/src/utils gr-
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From: |
jcorgan |
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Subject: |
[Commit-gnuradio] r7536 - in gnuradio/trunk: gnuradio-core/src/utils gr-utils/src/python |
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Date: |
Fri, 1 Feb 2008 09:48:01 -0700 (MST) |
Author: jcorgan
Date: 2008-02-01 09:48:00 -0700 (Fri, 01 Feb 2008)
New Revision: 7536
Added:
gnuradio/trunk/gr-utils/src/python/README.plot
gnuradio/trunk/gr-utils/src/python/gr_plot_char.py
gnuradio/trunk/gr-utils/src/python/gr_plot_const.py
gnuradio/trunk/gr-utils/src/python/gr_plot_fft_c.py
gnuradio/trunk/gr-utils/src/python/gr_plot_fft_f.py
gnuradio/trunk/gr-utils/src/python/gr_plot_float.py
gnuradio/trunk/gr-utils/src/python/gr_plot_int.py
gnuradio/trunk/gr-utils/src/python/gr_plot_iq.py
gnuradio/trunk/gr-utils/src/python/gr_plot_short.py
gnuradio/trunk/gr-utils/src/python/plot_data.py
Removed:
gnuradio/trunk/gnuradio-core/src/utils/README
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_char.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_const.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_data.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_c.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_f.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_float.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_int.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_iq.py
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_short.py
Modified:
gnuradio/trunk/gr-utils/src/python/
gnuradio/trunk/gr-utils/src/python/Makefile.am
Log:
Moved gnuradio-core/src/utils/ plotting scripts into gr-utils, with some rework.
The gr_plot_data.py class installs into the gnuradio namespace as
gnuradio.plot_data, and the remainder of the scripts install into
$prefix/bin.
Deleted: gnuradio/trunk/gnuradio-core/src/utils/README
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_char.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_const.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_data.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_c.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_f.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_float.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_int.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_iq.py
Deleted: gnuradio/trunk/gnuradio-core/src/utils/gr_plot_short.py
Property changes on: gnuradio/trunk/gr-utils/src/python
___________________________________________________________________
Name: svn:ignore
- Makefile
Makefile.in
+ Makefile
Makefile.in
*.pyc
Modified: gnuradio/trunk/gr-utils/src/python/Makefile.am
===================================================================
--- gnuradio/trunk/gr-utils/src/python/Makefile.am 2008-02-01 03:23:21 UTC
(rev 7535)
+++ gnuradio/trunk/gr-utils/src/python/Makefile.am 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -19,10 +19,26 @@
# Boston, MA 02110-1301, USA.
#
+include $(top_srcdir)/Makefile.common
+
EXTRA_DIST = \
- $(bin_SCRIPTS)
+ $(bin_SCRIPTS) \
+ README.plot
+ourpythondir = $(grpythondir)
+
+ourpython_PYTHON = \
+ plot_data.py
+
bin_SCRIPTS = \
+ gr_plot_char.py \
+ gr_plot_const.py \
+ gr_plot_fft_c.py \
+ gr_plot_fft_f.py \
+ gr_plot_float.py \
+ gr_plot_int.py \
+ gr_plot_iq.py \
+ gr_plot_short.py \
usrp_fft.py \
usrp_oscope.py \
usrp_print_db.py \
@@ -31,3 +47,5 @@
usrp_siggen.py \
usrp_test_counting.py \
usrp_test_loopback.py
+
+MOSTLYCLEANFILES = *~ *.pyc
Copied: gnuradio/trunk/gr-utils/src/python/README.plot (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/README)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/README.plot
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/README.plot 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,40 @@
+* gr_plot_*.py:
+These are a collection of Python scripts to enable viewing and analysis of
files produced by GNU Radio flow graphs. Most of them work off complex data
produced by digital waveforms.
+
+
+** gr_plot_float.py:
+Takes a GNU Radio floating point binary file and displays the samples 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.
+
+
+
+** gr_plot_iq.py:
+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.
+
+
+
+** gr_plot_const.py:
+Takes a GNU Radio complex binary file and displays the I&Q data versus time
and the constellation plot (I vs. Q). 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.
+
+
+
+** gr_plot_fft_c.py:
+Takes a GNU Radio complex binary file and displays the I&Q data versus time as
well as the frequency domain (FFT) plot. The y-axis values are plotted assuming
volts as the amplitude of the I&Q streams and converted into dBm in the
frequency domain (the 1/N power adjustment out of the FFT is performed
internally).
+
+The script plots a certain block of data at a time, specified on the command
line as -B or --block. This value defaults to 1000. The start position in the
file can be set by specifying -s or --start and defaults to 0 (the start of 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 and frequency axis, set
the sample rate (-R or --sample-rate) to the sample rate used when capturing
the samples.
+
+
+
+** gr_plot_fft_f.py:
+Takes a GNU Radio floating point binary file and displays the samples versus
time as well as the frequency domain (FFT) plot. The y-axis values are plotted
assuming volts as the amplitude of the I&Q streams and converted into dBm in
the frequency domain (the 1/N power adjustment out of the FFT is performed
internally).
+
+The script plots a certain block of data at a time, specified on the command
line as -B or --block. This value defaults to 1000. The start position in the
file can be set by specifying -s or --start and defaults to 0 (the start of 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 and frequency axis, set
the sample rate (-R or --sample-rate) to the sample rate used when capturing
the samples.
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_char.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_char.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_char.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_char.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,58 @@
+#!/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
+
+from optparse import OptionParser
+from gnuradio.plot_data import plot_data
+
+def main():
+ usage="%prog: [options] input_filenames"
+ description = "Takes a GNU Radio byte/char binary file and displays the
samples 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
+ filenames = args
+
+ datatype=scipy.int8
+ dc = plot_data(datatype, filenames, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_const.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_const.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_const.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_const.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,208 @@
+#!/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 *
+ from matplotlib.font_manager import fontManager, FontProperties
+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_constellation:
+ 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
+
+ # 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, 0.95, ("File: %s" % filename),
weight="heavy", size=16)
+ self.text_file_pos = figtext(0.10, 0.90, "File Position: ",
weight="heavy", size=16)
+ self.text_block = figtext(0.40, 0.90, ("Block Size: %d" %
self.block_length),
+ weight="heavy", size=16)
+ self.text_sr = figtext(0.60, 0.90, ("Sample Rate: %.2f" %
self.sample_rate),
+ weight="heavy", size=16)
+ 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('draw_event', self.zoom)
+ 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))
+ iq = scipy.fromfile(self.hfile, dtype=self.datatype,
count=self.block_length)
+ #print "Read in %d items" % len(iq)
+ if(len(iq) == 0):
+ print "End of File"
+ else:
+ self.reals = [r.real for r in iq]
+ self.imags = [i.imag for i in 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, 0.2, 0.4,
0.6])
+ 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.axis([min(self.time), max(self.time),
+ 1.5*min([min(self.reals), min(self.imags)]),
+ 1.5*max([max(self.reals), max(self.imags)])])
+
+ # Subplot for constellation plot
+ self.sp_const = self.fig.add_subplot(2,2,1, position=[0.575, 0.2, 0.4,
0.6])
+ self.sp_const.set_title(("Constellation"),
fontsize=self.title_font_size, fontweight="bold")
+ self.sp_const.set_xlabel("Inphase", fontsize=self.label_font_size,
fontweight="bold")
+ self.sp_const.set_ylabel("Qaudrature", fontsize=self.label_font_size,
fontweight="bold")
+ self.plot_const = plot(self.reals, self.imags, 'bo')
+ self.sp_const.axis([-2, 2, -2, 2])
+
+ 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.axis([min(self.time), max(self.time),
+ 1.5*min([min(self.reals), min(self.imags)]),
+ 1.5*max([max(self.reals), max(self.imags)])])
+
+ self.plot_const[0].set_data([self.reals, self.imags])
+ self.sp_const.axis([-2, 2, -2, 2])
+ draw()
+
+ def zoom(self, event):
+ newxlim = self.sp_iq.get_xlim()
+ if(newxlim != self.xlim):
+ self.xlim = newxlim
+ r = self.reals[int(ceil(self.xlim[0])) : int(ceil(self.xlim[1]))]
+ i = self.imags[int(ceil(self.xlim[0])) : int(ceil(self.xlim[1]))]
+
+ self.plot_const[0].set_data(r, i)
+ self.sp_const.axis([-2, 2, -2, 2])
+ self.manager.canvas.draw()
+ 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()
+
+
+def find(item_in, list_search):
+ try:
+ return list_search.index(item_in) != None
+ except ValueError:
+ 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 and the constellation plot (I vs. Q). 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_constellation(filename, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
+
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_fft_c.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_c.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_fft_c.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_fft_c.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,231 @@
+#!/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
+ from scipy import fftpack
+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
+from math import log10
+
+matplotlib.interactive(True)
+matplotlib.use('TkAgg')
+
+class draw_fft_c:
+ 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('draw_event', self.zoom)
+ 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.iq_fft = self.dofft(self.iq)
+
+ self.time = [i*(1/self.sample_rate) for i in
range(len(self.reals))]
+ self.freq = self.calc_freq(self.time, self.sample_rate)
+
+
+ def dofft(self, iq):
+ N = len(iq)
+ iq_fft = fftpack.fftshift(scipy.fft(iq)) # fft and shift axis
+ iq_fft = [20*log10(abs(i/N)) for i in iq_fft] # convert to decibels,
adjust power
+ return iq_fft
+
+ def calc_freq(self, time, sample_rate):
+ N = len(time)
+ Fs = 1.0 / (max(time) - min(time))
+ Fn = 0.5 * sample_rate
+ freq = [-Fn + i*Fs for i in range(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)
+
+ self.get_data()
+
+ # Subplot for real and imaginary parts of signal
+ self.sp_iq = self.fig.add_subplot(2,1,1, position=[0.075, 0.2, 0.4,
0.6])
+ 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)])])
+
+ # Subplot for constellation plot
+ self.sp_fft = self.fig.add_subplot(2,2,1, position=[0.575, 0.2, 0.4,
0.6])
+ self.sp_fft.set_title(("FFT"), fontsize=self.title_font_size,
fontweight="bold")
+ self.sp_fft.set_xlabel("Frequency (Hz)",
fontsize=self.label_font_size, fontweight="bold")
+ self.sp_fft.set_ylabel("Power (dBm)", fontsize=self.label_font_size,
fontweight="bold")
+ self.plot_fft = plot(self.freq, self.iq_fft, '-bo')
+ self.sp_fft.set_ylim([min(self.iq_fft)-10, max(self.iq_fft)+10])
+
+ 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)])])
+
+ self.plot_fft[0].set_data([self.freq, self.iq_fft])
+ self.sp_fft.set_ylim([min(self.iq_fft)-10, max(self.iq_fft)+10])
+
+ draw()
+
+ def zoom(self, event):
+ newxlim = self.sp_iq.get_xlim()
+ if(newxlim != self.xlim):
+ self.xlim = newxlim
+ xmin = max(0, int(ceil(self.sample_rate*self.xlim[0])))
+ xmax = min(int(ceil(self.sample_rate*self.xlim[1])), len(self.iq))
+
+ 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([min(freq), max(freq),
+ min(iq_fft)-10, max(iq_fft)+10])
+
+ 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()
+
+def find(item_in, list_search):
+ try:
+ return list_search.index(item_in) != None
+ except ValueError:
+ 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 as well as the frequency domain (FFT) plot. The y-axis values
are plotted assuming volts as the amplitude of the I&Q streams and converted
into dBm in the frequency domain (the 1/N power adjustment out of the FFT is
performed internally). The script plots a certain block of data at a time,
specified on the command line as -B or --block. This value defaults to 1000.
The start position in the file can be set by specifying -s or --start and
defaults to 0 (the start of 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 and frequency 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_c(filename, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
+
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_fft_f.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_f.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_fft_f.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_fft_f.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,234 @@
+#!/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
+ from scipy import fftpack
+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
+from math import log10
+
+matplotlib.interactive(True)
+matplotlib.use('TkAgg')
+
+class draw_fft_f:
+ 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.float32
+ 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_f.get_xlim()
+
+ self.manager = get_current_fig_manager()
+ connect('draw_event', self.zoom)
+ 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.floats = scipy.fromfile(self.hfile, dtype=self.datatype,
count=self.block_length)
+ #print "Read in %d items" % len(self.floats)
+ if(len(self.floats) == 0):
+ print "End of File"
+ else:
+ self.f_fft = self.dofft(self.floats)
+
+ self.time = [i*(1/self.sample_rate) for i in
range(len(self.floats))]
+ self.freq = self.calc_freq(self.time, self.sample_rate)
+
+ def dofft(self, f):
+ N = len(f)
+ f_fft = fftpack.fftshift(scipy.fft(f)) # fft and shift axis
+ f_dB = list()
+ for f in f_fft:
+ try:
+ f_dB.append(20*log10(abs(f/N))) # convert to decibels, adjust
power
+ except OverflowError: # protect against taking
log(0)
+ f = 1e-14 # not sure if this is the
best way to do this
+ f_dB.append(20*log10(abs(f/N)))
+
+ return f_dB
+
+ def calc_freq(self, time, sample_rate):
+ N = len(time)
+ Fs = 1.0 / (max(time) - min(time))
+ Fn = 0.5 * sample_rate
+ freq = [-Fn + i*Fs for i in range(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)
+
+ self.get_data()
+
+ # Subplot for real and imaginary parts of signal
+ self.sp_f = self.fig.add_subplot(2,1,1, position=[0.075, 0.2, 0.4,
0.6])
+ self.sp_f.set_title(("Amplitude"), fontsize=self.title_font_size,
fontweight="bold")
+ self.sp_f.set_xlabel("Time (s)", fontsize=self.label_font_size,
fontweight="bold")
+ self.sp_f.set_ylabel("Amplitude (V)", fontsize=self.label_font_size,
fontweight="bold")
+ self.plot_f = plot(self.time, self.floats, 'bo-')
+ self.sp_f.set_ylim([1.5*min(self.floats),
+ 1.5*max(self.floats)])
+
+ # Subplot for constellation plot
+ self.sp_fft = self.fig.add_subplot(2,2,1, position=[0.575, 0.2, 0.4,
0.6])
+ self.sp_fft.set_title(("FFT"), fontsize=self.title_font_size,
fontweight="bold")
+ self.sp_fft.set_xlabel("Frequency (Hz)",
fontsize=self.label_font_size, fontweight="bold")
+ self.sp_fft.set_ylabel("Power (dBm)", fontsize=self.label_font_size,
fontweight="bold")
+ self.plot_fft = plot(self.freq, self.f_fft, '-bo')
+ self.sp_fft.set_ylim([min(self.f_fft)-10, max(self.f_fft)+10])
+
+ draw()
+
+ def update_plots(self):
+ self.plot_f[0].set_data([self.time, self.floats])
+ self.sp_f.set_ylim([1.5*min(self.floats),
+ 1.5*max(self.floats)])
+
+ self.plot_fft[0].set_data([self.freq, self.f_fft])
+ self.sp_fft.set_ylim([min(self.f_fft)-10, max(self.f_fft)+10])
+
+ draw()
+
+ def zoom(self, event):
+ newxlim = self.sp_f.get_xlim()
+ if(newxlim != self.xlim):
+ self.xlim = newxlim
+ xmin = max(0, int(ceil(self.sample_rate*self.xlim[0])))
+ xmax = min(int(ceil(self.sample_rate*self.xlim[1])),
len(self.floats))
+
+ f = self.floats[xmin : xmax]
+ time = self.time[xmin : xmax]
+
+ f_fft = self.dofft(f)
+ freq = self.calc_freq(time, self.sample_rate)
+
+ self.plot_fft[0].set_data(freq, f_fft)
+ self.sp_fft.axis([min(freq), max(freq),
+ min(f_fft)-10, max(f_fft)+10])
+
+ 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()
+
+
+def find(item_in, list_search):
+ try:
+ return list_search.index(item_in) != None
+ except ValueError:
+ return False
+
+def main():
+ usage="%prog: [options] input_filename"
+ description = "Takes a GNU Radio floating point binary file and displays
the sample data versus time as well as the frequency domain (FFT) plot. The
y-axis values are plotted assuming volts as the amplitude of the I&Q streams
and converted into dBm in the frequency domain (the 1/N power adjustment out of
the FFT is performed internally). The script plots a certain block of data at a
time, specified on the command line as -B or --block. This value defaults to
1000. The start position in the file can be set by specifying -s or --start and
defaults to 0 (the start of 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 and frequency 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_f(filename, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
+
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_float.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_float.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_float.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_float.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,58 @@
+#!/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
+
+from optparse import OptionParser
+from gnuradio.plot_data import plot_data
+
+def main():
+ usage="%prog: [options] input_filenames"
+ description = "Takes a GNU Radio floating point binary file and displays
the samples 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
+ filenames = args
+
+ datatype=scipy.float32
+ dc = plot_data(datatype, filenames, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_int.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_int.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_int.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_int.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,58 @@
+#!/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
+
+from optparse import OptionParser
+from gnuradio.plot_data import plot_data
+
+def main():
+ usage="%prog: [options] input_filenames"
+ description = "Takes a GNU Radio integer binary file and displays the
samples 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
+ filenames = args
+
+ datatype=scipy.int32
+ dc = plot_data(datatype, filenames, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_iq.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_iq.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_iq.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_iq.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,180 @@
+#!/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()
+
+
+def find(item_in, list_search):
+ try:
+ return list_search.index(item_in) != None
+ except ValueError:
+ 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
+
+
+
Copied: gnuradio/trunk/gr-utils/src/python/gr_plot_short.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_short.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/gr_plot_short.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/gr_plot_short.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,58 @@
+#!/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
+
+from optparse import OptionParser
+from gnuradio.plot_data import plot_data
+
+def main():
+ usage="%prog: [options] input_filenames"
+ description = "Takes a GNU Radio short integer binary file and displays
the samples 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
+ filenames = args
+
+ datatype=scipy.int16
+ dc = plot_data(datatype, filenames, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Copied: gnuradio/trunk/gr-utils/src/python/plot_data.py (from rev 7535,
gnuradio/trunk/gnuradio-core/src/utils/gr_plot_data.py)
===================================================================
--- gnuradio/trunk/gr-utils/src/python/plot_data.py
(rev 0)
+++ gnuradio/trunk/gr-utils/src/python/plot_data.py 2008-02-01 16:48:00 UTC
(rev 7536)
@@ -0,0 +1,168 @@
+#
+# 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 plot_data:
+ def __init__(self, datatype, filenames, options):
+ self.hfile = list()
+ self.legend_text = list()
+ for f in filenames:
+ self.hfile.append(open(f, "r"))
+ self.legend_text.append(f)
+
+ self.block_length = options.block
+ self.start = options.start
+ self.sample_rate = options.sample_rate
+
+ self.datatype = datatype
+ self.sizeof_data = 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_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_f.get_xlim()
+
+ self.manager = get_current_fig_manager()
+ connect('key_press_event', self.click)
+ show()
+
+ def get_data(self, hfile):
+ self.text_file_pos.set_text("File Position: %d" %
(hfile.tell()//self.sizeof_data))
+ f = scipy.fromfile(hfile, dtype=self.datatype, count=self.block_length)
+ #print "Read in %d items" % len(self.f)
+ if(len(f) == 0):
+ print "End of File"
+ else:
+ self.f = f
+ self.time = [i*(1/self.sample_rate) for i in range(len(self.f))]
+
+ def make_plots(self):
+ self.sp_f = self.fig.add_subplot(2,1,1, position=[0.075, 0.2, 0.875,
0.6])
+ self.sp_f.set_title(("Amplitude"), fontsize=self.title_font_size,
fontweight="bold")
+ self.sp_f.set_xlabel("Time (s)", fontsize=self.label_font_size,
fontweight="bold")
+ self.sp_f.set_ylabel("Amplitude (V)", fontsize=self.label_font_size,
fontweight="bold")
+ self.plot_f = list()
+
+ maxval = -1e12
+ minval = 1e12
+
+ for hf in self.hfile:
+ # if specified on the command-line, set file pointer
+ hf.seek(self.sizeof_data*self.start, 1)
+
+ self.get_data(hf)
+
+ # Subplot for real and imaginary parts of signal
+ self.plot_f += plot(self.time, self.f, 'o-')
+ maxval = max(maxval, max(self.f))
+ minval = min(minval, min(self.f))
+
+ self.sp_f.set_ylim([1.5*minval, 1.5*maxval])
+
+ self.leg = self.sp_f.legend(self.plot_f, self.legend_text)
+
+ draw()
+
+ def update_plots(self):
+ maxval = -1e12
+ minval = 1e12
+ for hf,p in zip(self.hfile,self.plot_f):
+ self.get_data(hf)
+ p.set_data([self.time, self.f])
+ maxval = max(maxval, max(self.f))
+ minval = min(minval, min(self.f))
+
+ self.sp_f.set_ylim([1.5*minval, 1.5*maxval])
+
+ 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.update_plots()
+
+ def step_backward(self):
+ for hf in self.hfile:
+ # Step back in file position
+ if(hf.tell() >= 2*self.sizeof_data*self.block_length ):
+ hf.seek(-2*self.sizeof_data*self.block_length, 1)
+ else:
+ hf.seek(-hf.tell(),1)
+ self.update_plots()
+
+
+def find(item_in, list_search):
+ try:
+ return list_search.index(item_in) != None
+ except ValueError:
+ return False
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