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[Commit-gnuradio] r7654 - in gnuradio/branches/releases/3.1: . gnuradio-
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From: |
jcorgan |
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Subject: |
[Commit-gnuradio] r7654 - in gnuradio/branches/releases/3.1: . gnuradio-core/src/lib/general gnuradio-core/src/utils |
|
Date: |
Wed, 13 Feb 2008 11:38:11 -0700 (MST) |
Author: jcorgan
Date: 2008-02-13 11:38:11 -0700 (Wed, 13 Feb 2008)
New Revision: 7654
Added:
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.cc
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.h
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.i
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/README
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_char.py
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_c.py
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_f.py
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_int.py
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_short.py
Removed:
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_read_binary.py
Modified:
gnuradio/branches/releases/3.1/AUTHORS
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/Makefile.am
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/general.i
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_math.h
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_const.py
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_float.py
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_iq.py
Log:
Merged relevant portions of changeset r7324 from trunk into release branch.
Adds plotting utilties, gr.peak_detector2, and branchless clipping.
Modified: gnuradio/branches/releases/3.1/AUTHORS
===================================================================
--- gnuradio/branches/releases/3.1/AUTHORS 2008-02-13 17:56:13 UTC (rev
7653)
+++ gnuradio/branches/releases/3.1/AUTHORS 2008-02-13 18:38:11 UTC (rev
7654)
@@ -11,3 +11,4 @@
Joshua Lackey <address@hidden> Original GMSK implementation.
Johnathan Corgan <address@hidden> Build system, ongoing stuff, release manager
Bdale Garbee <address@hidden> Debian release packages
+Tom Rondeau <address@hidden> Mostly digital waveforms and a little
bit of trouble
Modified:
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/Makefile.am
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/Makefile.am
2008-02-13 17:56:13 UTC (rev 7653)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/Makefile.am
2008-02-13 18:38:11 UTC (rev 7654)
@@ -98,6 +98,7 @@
gr_null_source.cc \
gr_pa_2x2_phase_combiner.cc \
gr_packet_sink.cc \
+ gr_peak_detector2_fb.cc \
gr_phase_modulator_fc.cc \
gr_pll_carriertracking_cc.cc \
gr_pll_freqdet_cf.cc \
@@ -230,6 +231,7 @@
gr_null_source.h \
gr_pa_2x2_phase_combiner.h \
gr_packet_sink.h \
+ gr_peak_detector2_fb.h \
gr_phase_modulator_fc.h \
gr_pll_carriertracking_cc.h \
gr_pll_freqdet_cf.h \
@@ -363,6 +365,7 @@
gr_null_source.i \
gr_pa_2x2_phase_combiner.i \
gr_packet_sink.i \
+ gr_peak_detector2_fb.i \
gr_phase_modulator_fc.i \
gr_pll_carriertracking_cc.i \
gr_pll_freqdet_cf.i \
Modified: gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/general.i
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/general.i
2008-02-13 17:56:13 UTC (rev 7653)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/general.i
2008-02-13 18:38:11 UTC (rev 7654)
@@ -118,6 +118,7 @@
#include <gr_bin_statistics_f.h>
#include <gr_glfsr_source_b.h>
#include <gr_glfsr_source_f.h>
+#include <gr_peak_detector2_fb.h>
%}
%include "gr_nop.i"
@@ -216,3 +217,4 @@
%include "gr_bin_statistics_f.i"
%include "gr_glfsr_source_b.i"
%include "gr_glfsr_source_f.i"
+%include "gr_peak_detector2_fb.i"
Modified: gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_math.h
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_math.h
2008-02-13 17:56:13 UTC (rev 7653)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_math.h
2008-02-13 18:38:11 UTC (rev 7654)
@@ -65,4 +65,17 @@
return gr_fast_atan2f(z.imag(), z.real());
}
+
+/* This bounds x by +/- clip without a branch */
+
+static inline float gr_branchless_clip(float x, float clip)
+{
+ float x1 = fabsf(x+clip);
+ float x2 = fabsf(x-clip);
+ x1 -= x2;
+ return 0.5*x1;
+}
+
+
+
#endif /* _GR_MATH_H_ */
Copied:
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.cc
(from rev 7324,
gnuradio/trunk/gnuradio-core/src/lib/general/gr_peak_detector2_fb.cc)
===================================================================
---
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.cc
(rev 0)
+++
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.cc
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,106 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2007 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_peak_detector2_fb.h>
+#include <gr_io_signature.h>
+
+gr_peak_detector2_fb_sptr
+gr_make_peak_detector2_fb (float threshold_factor_rise,
+ int look_ahead, float alpha)
+{
+ return gr_peak_detector2_fb_sptr (new gr_peak_detector2_fb
(threshold_factor_rise,
+ look_ahead, alpha));
+}
+
+gr_peak_detector2_fb::gr_peak_detector2_fb (float threshold_factor_rise,
+ int look_ahead, float alpha)
+ : gr_sync_block ("peak_detector2_fb",
+ gr_make_io_signature (1, 1, sizeof(float)),
+ gr_make_io_signature2 (1, 2, sizeof(char), sizeof(float))),
+ d_threshold_factor_rise(threshold_factor_rise),
+ d_look_ahead(look_ahead), d_alpha(alpha), d_avg(0.0f), d_found(false)
+{
+}
+
+int
+gr_peak_detector2_fb::work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items) {
+ float *iptr = (float *) input_items[0];
+ char *optr = (char *) output_items[0];
+
+ assert(noutput_items >= 2);
+
+ memset(optr, 0, noutput_items*sizeof(char));
+
+ for (int i = 0; i < noutput_items; i++) {
+
+ if (!d_found) {
+ // Have not yet detected presence of peak
+ if (iptr[i] > d_avg * (1.0f + d_threshold_factor_rise)) {
+ d_found = true;
+ d_look_ahead_remaining = d_look_ahead;
+ d_peak_val = -(float)INFINITY;
+ }
+ else {
+ d_avg = d_alpha*iptr[i] + (1.0f - d_alpha)*d_avg;
+ }
+ }
+ else {
+ // Detected presence of peak
+ if (iptr[i] > d_peak_val) {
+ d_peak_val = iptr[i];
+ d_peak_ind = i;
+ }
+ else if (d_look_ahead_remaining <= 0) {
+ optr[d_peak_ind] = 1;
+ d_found = false;
+ d_avg = iptr[i];
+ }
+
+ // Have not yet located peak, loop and keep searching.
+ d_look_ahead_remaining--;
+ }
+
+ // Every iteration of the loop, write debugging signal out if
+ // connected:
+ if (output_items.size() == 2) {
+ float *sigout = (float *) output_items[1];
+ sigout[i] = d_avg;
+ }
+ } // loop
+
+ if (!d_found)
+ return noutput_items;
+
+ // else if detected presence, keep searching during the next call to work.
+ int tmp = d_peak_ind;
+ d_peak_ind = 1;
+
+ return tmp - 1;
+}
+
+
Copied:
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.h
(from rev 7324,
gnuradio/trunk/gnuradio-core/src/lib/general/gr_peak_detector2_fb.h)
===================================================================
---
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.h
(rev 0)
+++
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.h
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,108 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2007 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.
+ */
+
+#ifndef INCLUDED_gr_peak_detector2_FB_H
+#define INCLUDED_gr_peak_detector2_FB_H
+
+#include <gr_sync_block.h>
+
+class gr_peak_detector2_fb;
+typedef boost::shared_ptr<gr_peak_detector2_fb> gr_peak_detector2_fb_sptr;
+
+gr_peak_detector2_fb_sptr gr_make_peak_detector2_fb (float
threshold_factor_rise = 7,
+ int look_ahead = 1000,
+ float alpha = 0.001);
+
+/*!
+ * \brief Detect the peak of a signal
+ * \ingroup block
+ *
+ * If a peak is detected, this block outputs a 1,
+ * or it outputs 0's. A separate debug output may be connected, to
+ * view the internal EWMA described below.
+ *
+ * \param threshold_factor_rise The threshold factor determins when a peak
+ * is present. An EWMA average of the signal is calculated and when the
+ * value of the signal goes over threshold_factor_rise*average, we
+ * call the peak.
+ * \param look_ahead The look-ahead value is used when the threshold is
+ * found to locate the peak within this range.
+ * \param alpha The gain value of a single-pole moving average filter
+ */
+
+class gr_peak_detector2_fb : public gr_sync_block
+{
+ friend gr_peak_detector2_fb_sptr
+ gr_make_peak_detector2_fb (float threshold_factor_rise, int look_ahead,
float alpha);
+
+ gr_peak_detector2_fb (float threshold_factor_rise, int look_ahead, float
alpha);
+
+private:
+ float d_threshold_factor_rise;
+ int d_look_ahead;
+ int d_look_ahead_remaining;
+ int d_peak_ind;
+ float d_peak_val;
+ float d_alpha;
+ float d_avg;
+ bool d_found;
+
+public:
+
+ /*! \brief Set the threshold factor value for the rise time
+ * \param thr new threshold factor
+ */
+ void set_threshold_factor_rise(float thr) { d_threshold_factor_rise = thr; }
+
+ /*! \brief Set the look-ahead factor
+ * \param look new look-ahead factor
+ */
+ void set_look_ahead(int look) { d_look_ahead = look; }
+
+ /*! \brief Set the running average alpha
+ * \param alpha new alpha for running average
+ */
+ void set_alpha(int alpha) { d_alpha = alpha; }
+
+ /*! \brief Get the threshold factor value for the rise time
+ * \return threshold factor
+ */
+ float threshold_factor_rise() { return d_threshold_factor_rise; }
+
+ /*! \brief Get the look-ahead factor value
+ * \return look-ahead factor
+ */
+ int look_ahead() { return d_look_ahead; }
+
+ /*! \brief Get the alpha value of the running average
+ * \return alpha
+ */
+ float alpha() { return d_alpha; }
+
+ int work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+};
+
+#endif
+
+
Copied:
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.i
(from rev 7324,
gnuradio/trunk/gnuradio-core/src/lib/general/gr_peak_detector2_fb.i)
===================================================================
---
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.i
(rev 0)
+++
gnuradio/branches/releases/3.1/gnuradio-core/src/lib/general/gr_peak_detector2_fb.i
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,45 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2007 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.
+ */
+
+
+GR_SWIG_BLOCK_MAGIC(gr,peak_detector2_fb)
+
+ gr_peak_detector2_fb_sptr gr_make_peak_detector2_fb (float
threshold_factor_rise = 7,
+ int look_ahead = 1000,
+ float alpha=0.001);
+
+class gr_peak_detector2_fb : public gr_sync_block
+{
+private:
+ gr_peak_detector2_fb (float threshold_factor_rise, int look_ahead, float
alpha);
+
+public:
+ void set_threshold_factor_rise(float thr) { d_threshold_factor_rise = thr; }
+ void set_look_ahead(int look) { d_look_ahead = look; }
+ void set_alpha(int alpha) { d_avg_alpha = alpha; }
+
+ float threshold_factor_rise() { return d_threshold_factor_rise; }
+ int look_ahead() { return d_look_ahead; }
+ float alpha() { return d_avg_alpha; }
+};
+
+
Copied: gnuradio/branches/releases/3.1/gnuradio-core/src/utils/README (from rev
7324, gnuradio/trunk/gnuradio-core/src/utils/README)
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/README
(rev 0)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/README
2008-02-13 18:38:11 UTC (rev 7654)
@@ -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/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_char.py
(from rev 7324, gnuradio/trunk/gnuradio-core/src/utils/gr_plot_char.py)
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_char.py
(rev 0)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_char.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,165 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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.
+#
+
+import scipy
+from pylab import *
+from optparse import OptionParser
+
+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.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('key_press_event', self.click)
+ show()
+
+ def get_data(self):
+ self.text_file_pos.set_text("File Position: %d" % (self.hfile.tell()))
+ f = scipy.fromfile(self.hfile, dtype=scipy.int8,
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):
+ # if specified on the command-line, set file pointer
+ self.hfile.seek(8*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, 0.875,
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 = plot(self.time, self.f, 'bo-')
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+
+ draw()
+
+ def update_plots(self):
+ self.plot_f[0].set_data([self.time, self.f])
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+ 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.block_length ):
+ self.hfile.seek(-2*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 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
+ filename = args[0]
+
+ dc = draw_fft_c(filename, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Modified:
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_const.py
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_const.py
2008-02-13 17:56:13 UTC (rev 7653)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_const.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -20,89 +20,172 @@
# Boston, MA 02110-1301, USA.
#
-import pylab, math
+import scipy
from pylab import *
-import struct, sys
+from matplotlib.font_manager import fontManager, FontProperties
from optparse import OptionParser
-import gr_read_binary
+matplotlib.interactive(True)
+matplotlib.use('TkAgg')
-class zoom:
- def __init__(self, xdata, reals, imags, sp_iq, sp_const, plot_const,
manager):
- self.sp_iq = sp_iq
- self.sp_const = sp_const
- self.xaxis = xdata
- self.reals = reals
- self.imags = imags
- self.plot_const = plot_const
- self.manager = manager
+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.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()
-
- def __call__(self, event):
+
+ 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()//8))
+ iq = scipy.fromfile(self.hfile, dtype=scipy.complex64,
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(16*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(self.xlim[0]) : int(self.xlim[1])]
- i = self.imags[int(self.xlim[0]) : int(self.xlim[1])]
+ 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() >= 16*self.block_length ):
+ self.hfile.seek(-16*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] output_filename"
- parser = OptionParser(conflict_handler="resolve", usage=usage)
- parser.add_option("-s", "--size", type="int", default=None,
- help="Specify the number of points to plot
[default=%default]")
- parser.add_option("", "--skip", type="int", default=None,
- help="Specify the number of points to skip
[default=%default]")
+ 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]
- iq = gr_read_binary.read_complex_binary(filename)
+ dc = draw_constellation(filename, options)
- if(options.skip is None):
- options.skip = 0
-
- if((options.size is None) or ((options.skip+options.size) > len(iq[0]))):
- options.size = len(iq[0]) - options.skip
-
- reals = iq[0][options.skip : options.skip + options.size]
- imags = iq[1][options.skip : options.skip + options.size]
- x = range(options.skip, options.skip + options.size)
-
- # PLOT
- f = figure(1, figsize=(16, 12), facecolor='w')
- rcParams['xtick.labelsize'] = 16
- rcParams['ytick.labelsize'] = 16
-
- # Subplot for real and imaginary parts of signal
- sp1 = f.add_subplot(2,1,1)
- sp1.set_title(("I&Q"), fontsize=26, fontweight="bold")
- sp1.set_xlabel("Time (s)", fontsize=20, fontweight="bold")
- sp1.set_ylabel("Amplitude (V)", fontsize=20, fontweight="bold")
- plot(x, reals, 'bo-', x, imags, 'ro-')
-
- # Subplot for constellation plot
- sp2 = f.add_subplot(2,1,2)
- sp2.set_title(("Constellation"), fontsize=26, fontweight="bold")
- sp2.set_xlabel("Inphase", fontsize=20, fontweight="bold")
- sp2.set_ylabel("Qaudrature", fontsize=20, fontweight="bold")
- p2 = plot(reals, imags, 'bo')
- sp2.axis([-2, 2, -2, 2])
-
- manager = get_current_fig_manager()
- zm = zoom(x, reals, imags, sp1, sp2, p2, manager)
- connect('draw_event', zm)
-
- show()
-
if __name__ == "__main__":
try:
main()
Copied: gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_c.py
(from rev 7324, gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_c.py)
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_c.py
(rev 0)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_c.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,221 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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.
+#
+
+import scipy
+from pylab import *
+from optparse import OptionParser
+from scipy import fftpack
+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.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()//8))
+ self.iq = scipy.fromfile(self.hfile, dtype=scipy.complex64,
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(16*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() >= 16*self.block_length ):
+ self.hfile.seek(-16*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 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/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_f.py
(from rev 7324, gnuradio/trunk/gnuradio-core/src/utils/gr_plot_fft_f.py)
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_f.py
(rev 0)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_fft_f.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,223 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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.
+#
+
+import scipy
+from pylab import *
+from optparse import OptionParser
+from scipy import fftpack
+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.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()//4))
+ self.floats = scipy.fromfile(self.hfile, dtype=scipy.float32,
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(16*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() >= 8*self.block_length ):
+ self.hfile.seek(-8*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 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
+
+
+
Modified:
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_float.py
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_float.py
2008-02-13 17:56:13 UTC (rev 7653)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_float.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -20,56 +20,146 @@
# Boston, MA 02110-1301, USA.
#
-import pylab, math
+import scipy
from pylab import *
-import struct, sys
from optparse import OptionParser
-import gr_read_binary
+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.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('key_press_event', self.click)
+ show()
+
+ def get_data(self):
+ self.text_file_pos.set_text("File Position: %d" %
(self.hfile.tell()//4))
+ f = scipy.fromfile(self.hfile, dtype=scipy.float32,
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):
+ # if specified on the command-line, set file pointer
+ self.hfile.seek(8*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, 0.875,
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 = plot(self.time, self.f, 'bo-')
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+
+ draw()
+
+ def update_plots(self):
+ self.plot_f[0].set_data([self.time, self.f])
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+ 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() >= 8*self.block_length ):
+ self.hfile.seek(-8*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] output_filename"
- parser = OptionParser(conflict_handler="resolve", usage=usage)
- parser.add_option("-s", "--size", type="int", default=None,
- help="Specify the number of points to plot
[default=%default]")
- parser.add_option("", "--skip", type="int", default=None,
- help="Specify the number of points to skip
[default=%default]")
+ usage="%prog: [options] input_filename"
+ 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
filename = args[0]
- fl = gr_read_binary.read_float_binary(filename)
+ dc = draw_fft_c(filename, options)
- if(options.skip is None):
- options.skip = 0
-
- if((options.size is None) or ((options.skip+options.size) > len(iq[0]))):
- options.size = len(fl) - options.skip
-
- x = range(options.skip, options.skip + options.size)
-
- # PLOT REAL AND IMAGINARY PARTS
-
- f = figure(1, figsize=(16, 12), facecolor='w')
- rcParams['xtick.labelsize'] = 16
- rcParams['ytick.labelsize'] = 16
-
- sp1 = f.add_subplot(1,1,1)
- sp1.set_title(("GNU Radio Float"), fontsize=26, fontweight="bold")
- sp1.set_xlabel("Time (s)", fontsize=20, fontweight="bold")
- sp1.set_ylabel("Amplitude (V)", fontsize=20, fontweight="bold")
- plot(x, fl, 'bo-')
-
- show()
-
if __name__ == "__main__":
try:
main()
except KeyboardInterrupt:
pass
-
-
Copied: gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_int.py
(from rev 7324, gnuradio/trunk/gnuradio-core/src/utils/gr_plot_int.py)
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_int.py
(rev 0)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_int.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,165 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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.
+#
+
+import scipy
+from pylab import *
+from optparse import OptionParser
+
+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.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('key_press_event', self.click)
+ show()
+
+ def get_data(self):
+ self.text_file_pos.set_text("File Position: %d" %
(self.hfile.tell()//4))
+ f = scipy.fromfile(self.hfile, dtype=scipy.int32,
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):
+ # if specified on the command-line, set file pointer
+ self.hfile.seek(8*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, 0.875,
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 = plot(self.time, self.f, 'bo-')
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+
+ draw()
+
+ def update_plots(self):
+ self.plot_f[0].set_data([self.time, self.f])
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+ 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() >= 8*self.block_length ):
+ self.hfile.seek(-8*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 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
+ filename = args[0]
+
+ dc = draw_fft_c(filename, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Modified: gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_iq.py
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_iq.py
2008-02-13 17:56:13 UTC (rev 7653)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_iq.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -20,53 +20,145 @@
# Boston, MA 02110-1301, USA.
#
-import pylab, math
+import scipy
from pylab import *
-import struct, sys
from optparse import OptionParser
-import gr_read_binary
+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.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()//8))
+ self.iq = scipy.fromfile(self.hfile, dtype=scipy.complex64,
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(16*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() >= 16*self.block_length ):
+ self.hfile.seek(-16*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] output_filename"
- parser = OptionParser(conflict_handler="resolve", usage=usage)
- parser.add_option("-s", "--size", type="int", default=None,
- help="Specify the number of points to plot
[default=%default]")
- parser.add_option("", "--skip", type="int", default=None,
- help="Specify the number of points to skip
[default=%default]")
+ 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]
- iq = gr_read_binary.read_complex_binary(filename)
+ dc = draw_fft(filename, options)
- if(options.skip is None):
- options.skip = 0
-
- if((options.size is None) or ((options.skip+options.size) > len(iq[0]))):
- options.size = len(iq[0]) - options.skip
-
- reals = iq[0][options.skip : options.skip + options.size]
- imags = iq[1][options.skip : options.skip + options.size]
- x = range(options.skip, options.skip + options.size)
-
- # PLOT REAL AND IMAGINARY PARTS
-
- f = figure(1, figsize=(16, 12), facecolor='w')
- rcParams['xtick.labelsize'] = 16
- rcParams['ytick.labelsize'] = 16
-
- sp1 = f.add_subplot(1,1,1)
- sp1.set_title(("I&Q"), fontsize=26, fontweight="bold")
- sp1.set_xlabel("Time (s)", fontsize=20, fontweight="bold")
- sp1.set_ylabel("Amplitude (V)", fontsize=20, fontweight="bold")
- plot(x, reals, 'bo-', x, imags, 'ro-')
-
- show()
-
if __name__ == "__main__":
try:
main()
Copied: gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_short.py
(from rev 7324, gnuradio/trunk/gnuradio-core/src/utils/gr_plot_short.py)
===================================================================
--- gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_short.py
(rev 0)
+++ gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_plot_short.py
2008-02-13 18:38:11 UTC (rev 7654)
@@ -0,0 +1,165 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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.
+#
+
+import scipy
+from pylab import *
+from optparse import OptionParser
+
+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.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('key_press_event', self.click)
+ show()
+
+ def get_data(self):
+ self.text_file_pos.set_text("File Position: %d" %
(self.hfile.tell()//2))
+ f = scipy.fromfile(self.hfile, dtype=scipy.int16,
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):
+ # if specified on the command-line, set file pointer
+ self.hfile.seek(8*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, 0.875,
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 = plot(self.time, self.f, 'bo-')
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+
+ draw()
+
+ def update_plots(self):
+ self.plot_f[0].set_data([self.time, self.f])
+ self.sp_f.set_ylim([1.5*min(self.f),
+ 1.5*max(self.f)])
+ 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() >= 4*self.block_length ):
+ self.hfile.seek(-4*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 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
+ filename = args[0]
+
+ dc = draw_fft_c(filename, options)
+
+if __name__ == "__main__":
+ try:
+ main()
+ except KeyboardInterrupt:
+ pass
+
Deleted:
gnuradio/branches/releases/3.1/gnuradio-core/src/utils/gr_read_binary.py
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