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#!/usr/bin/env python
try:
import scipy
from scipy import fftpack
except ImportError:
print "Please install SciPy to run this script (http://www.scipy.org/)"
raise SystemExit, 1
import sys, os
from PyQt4 import Qt, QtCore, QtGui
import PyQt4.Qwt5 as Qwt
from matplotlib import mlab
from optparse import OptionParser
from gnuradio import eng_notation
from pyqt_plot import Ui_MainWindow
class gr_plot_qt(QtGui.QMainWindow):
def __init__(self, qapp, filename, options, parent=None):
QtGui.QWidget.__init__(self, parent)
self.gui = Ui_MainWindow()
self.gui.setupUi(self)
self.block_length = options.block_length
self.start = options.start
self.sample_rate = options.sample_rate
self.psdfftsize = options.psd_size
self.specfftsize = options.spec_size
self.winfunc = scipy.blackman
self.sizeof_data = 8
self.datatype = scipy.complex64
self.iq = list()
self.time = list()
# Set up basic plot attributes
self.gui.timePlot.setAxisTitle(self.gui.timePlot.xBottom, "Time (sec)")
self.gui.timePlot.setAxisTitle(self.gui.timePlot.yLeft, "Amplitude (V)")
self.gui.freqPlot.setAxisTitle(self.gui.freqPlot.xBottom, "Frequency (Hz)")
self.gui.freqPlot.setAxisTitle(self.gui.freqPlot.yLeft, "Magnitude (dB)")
# Set up FFT size combo box
self.gui.fftComboBox.addItems(["128", "256", "512", "1024", "2048",
"4096", "8192", "16384", "32768"])
pos = self.gui.fftComboBox.findText(Qt.QString("%1").arg(self.psdfftsize))
self.gui.fftComboBox.setCurrentIndex(pos)
self.connect(self.gui.fftComboBox,
Qt.SIGNAL("activated (const QString&)"),
self.fftComboBoxEdit)
# Set up color scheme box
self.color_modes = {"Black on White" : self.color_black_on_white,
"White on Black" : self.color_white_on_black,
"Blue on Black" : self.color_blue_on_black,
"Green on Black" : self.color_green_on_black}
self.gui.colorComboBox.addItems(self.color_modes.keys())
pos = self.gui.colorComboBox.findText("Blue on Black")
self.gui.colorComboBox.setCurrentIndex(pos)
self.connect(self.gui.colorComboBox,
Qt.SIGNAL("activated (const QString&)"),
self.colorComboBoxEdit)
# Create zoom functionality for the plots
self.timeZoomer = Qwt.QwtPlotZoomer(self.gui.timePlot.xBottom,
self.gui.timePlot.yLeft,
Qwt.QwtPicker.PointSelection,
Qwt.QwtPicker.AlwaysOn,
self.gui.timePlot.canvas())
self.freqZoomer = Qwt.QwtPlotZoomer(self.gui.freqPlot.xBottom,
self.gui.freqPlot.yLeft,
Qwt.QwtPicker.PointSelection,
Qwt.QwtPicker.AlwaysOn,
self.gui.freqPlot.canvas())
self.picker = Qwt.QwtPlotPicker(self.gui.timePlot.xBottom,
self.gui.timePlot.yLeft,
Qwt.QwtPicker.PointSelection,
Qwt.QwtPlotPicker.CrossRubberBand,
Qwt.QwtPicker.AlwaysOn,
self.gui.timePlot.canvas())
self.picker.connect(self.picker,
Qt.SIGNAL('selected(const QwtDoublePoint&)'),
self.clickMe)
# Set up action when tab is changed
self.connect(self.gui.tabGroup,
Qt.SIGNAL("currentChanged (int)"),
self.tabChanged)
# Add a legend to the Time plot
legend_real = Qwt.QwtLegend()
self.gui.timePlot.insertLegend(legend_real)
# Set up slider
self.gui.plotHBar.setSingleStep(1)
self.gui.plotHBar.setPageStep(self.block_length)
self.gui.plotHBar.setMinimum(0)
self.gui.plotHBar.setMaximum(self.block_length)
self.connect(self.gui.plotHBar,
Qt.SIGNAL("valueChanged(int)"),
self.sliderMoved)
# Connect Open action to Open Dialog box
self.connect(self.gui.action_open,
Qt.SIGNAL("activated()"),
self.open_file)
# Set up file position boxes to update current figure
self.connect(self.gui.filePosStartLineEdit,
Qt.SIGNAL("editingFinished()"),
self.file_position_changed)
self.connect(self.gui.filePosStopLineEdit,
Qt.SIGNAL("editingFinished()"),
self.file_position_changed)
self.connect(self.gui.filePosLengthLineEdit,
Qt.SIGNAL("editingFinished()"),
self.file_length_changed)
self.connect(self.gui.fileTimeStartLineEdit,
Qt.SIGNAL("editingFinished()"),
self.file_time_changed)
self.connect(self.gui.fileTimeStopLineEdit,
Qt.SIGNAL("editingFinished()"),
self.file_time_changed)
self.connect(self.gui.fileTimeLengthLineEdit,
Qt.SIGNAL("editingFinished()"),
self.file_time_length_changed)
self.rcurve = Qwt.QwtPlotCurve("Real")
self.icurve = Qwt.QwtPlotCurve("Imaginary")
self.icurve.attach(self.gui.timePlot)
self.rcurve.attach(self.gui.timePlot)
self.psdcurve = Qwt.QwtPlotCurve("PSD")
self.psdcurve.attach(self.gui.freqPlot)
# Set up initial color scheme
self.color_modes["Blue on Black"]()
self.set_sample_rate(self.sample_rate)
self.connect(self.gui.sampleRateLineEdit,
Qt.SIGNAL("editingFinished()"),
self.sample_rate_changed)
if(filename is not None):
self.initialize(filename)
self.show()
def open_file(self):
filename = Qt.QFileDialog.getOpenFileName(self, "Open", ".")
if(filename != ""):
print filename
self.initialize(filename)
def initialize(self, filename):
self.hfile = open(filename, "r")
self.setWindowTitle(("GNU Radio File Plot Utility: %s" % filename))
self.gui.filePosStartLineEdit.setText("0")
self.gui.filePosStopLineEdit.setText("0")
self.gui.fileTimeStartLineEdit.setText("0")
self.gui.fileTimeStopLineEdit.setText("0")
self.cur_start = 0
self.cur_stop = self.block_length
self.init_data_input()
self.get_data(self.cur_start, self.cur_stop)
self.get_psd()
self.gui.plotHBar.setSliderPosition(0)
self.gui.plotHBar.setMaximum(self.signal_size)
self.update_time_curves()
self.update_psd_curves()
def init_data_input(self):
self.hfile.seek(0, os.SEEK_END)
self.signal_size = self.hfile.tell()/self.sizeof_data
print "Sizeof File: ", self.signal_size
self.hfile.seek(0, os.SEEK_SET)
def get_data(self, start, end):
if(end > start):
self.hfile.seek(start*self.sizeof_data, os.SEEK_SET)
self.position = start
try:
iq = scipy.fromfile(self.hfile, dtype=self.datatype,
count=end-start)
if(len(iq) < (end-start)):
end = len(iq)
self.gui.filePosLengthLineEdit.setText(Qt.QString("%1").arg(end))
self.gui.plotHBar.setMaximum(end)
self.gui.plotHBar.setSingleStep(end)
self.file_length_changed()
tstep = 1.0 / self.sample_rate
self.iq = iq
self.time = [tstep*(self.position + i) for i in xrange(len(self.iq))]
self.set_file_pos_box(start, end)
except MemoryError:
pass
else:
# Do we want to do anything about this?
pass
def get_psd(self):
winpoints = self.winfunc(self.psdfftsize)
iq_psd, freq = mlab.psd(self.iq, Fs=self.sample_rate,
NFFT=self.psdfftsize,
noverlap=self.psdfftsize/4.0,
window=winpoints,
scale_by_freq=False)
self.iq_psd = 10.0*scipy.log10(abs(fftpack.fftshift(iq_psd)))
self.freq = freq - self.sample_rate/2.0
def clickMe(self, qPoint):
print qPoint.x()
def fftComboBoxEdit(self, fftSize):
self.psdfftsize = fftSize.toInt()[0]
self.get_psd()
self.update_psd_curves()
def colorComboBoxEdit(self, colorSelection):
colorstr = str(colorSelection.toAscii())
color_func = self.color_modes[colorstr]
color_func()
def sliderMoved(self, value):
pos_start = value
pos_end = value + self.gui.plotHBar.pageStep()
self.get_data(pos_start, pos_end)
self.get_psd()
self.update_time_curves()
self.update_psd_curves()
def set_sample_rate(self, sr):
self.sample_rate = sr
srstr = eng_notation.num_to_str(self.sample_rate)
self.gui.sampleRateLineEdit.setText(Qt.QString("%1").arg(srstr))
def sample_rate_changed(self):
srstr = self.gui.sampleRateLineEdit.text().toAscii()
self.sample_rate = eng_notation.str_to_num(srstr)
self.set_file_pos_box(self.cur_start, self.cur_stop)
self.get_data(self.cur_start, self.cur_stop)
self.get_psd()
self.update_time_curves()
self.update_psd_curves()
def set_file_pos_box(self, start, end):
tstart = start / self.sample_rate
tend = end / self.sample_rate
self.gui.filePosStartLineEdit.setText(Qt.QString("%1").arg(start))
self.gui.filePosStopLineEdit.setText(Qt.QString("%1").arg(end))
self.gui.filePosLengthLineEdit.setText(Qt.QString("%1").arg(end-start))
self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
self.gui.fileTimeLengthLineEdit.setText(Qt.QString("%1").arg(tend-tstart))
def file_position_changed(self):
start = self.gui.filePosStartLineEdit.text().toInt()
end = self.gui.filePosStopLineEdit.text().toInt()
if((start[1] == True) and (end[1] == True)):
self.cur_start = start[0]
self.cur_stop = end[0]
tstart = self.cur_start / self.sample_rate
tend = self.cur_stop / self.sample_rate
self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
self.get_data(self.cur_start, self.cur_stop)
self.update_time_curves()
self.update_psd_curves()
# If there's a non-digit character, reset box
else:
self.set_file_pos_box(self.cur_start, self.cur_stop)
def file_time_changed(self):
tstart = self.gui.fileTimeStartLineEdit.text().toDouble()
tstop = self.gui.fileTimeStopLineEdit.text().toDouble()
if((tstart[1] == True) and (tstop[1] == True)):
self.cur_start = int(tstart[0] * self.sample_rate)
self.cur_stop = int(tstop[0] * self.sample_rate)
self.get_data(self.cur_start, self.cur_stop)
self.gui.filePosStartLineEdit.setText(Qt.QString("%1").arg(self.cur_start))
self.gui.filePosStopLineEdit.setText(Qt.QString("%1").arg(self.cur_stop))
self.update_time_curves()
self.update_psd_curves()
# If there's a non-digit character, reset box
else:
self.set_file_pos_box(self.cur_start, self.cur_stop)
def file_length_changed(self):
start = self.gui.filePosStartLineEdit.text().toInt()
length = self.gui.filePosLengthLineEdit.text().toInt()
if((start[1] == True) and (length[1] == True)):
self.cur_start = start[0]
self.block_length = length[0]
self.cur_stop = self.cur_start + self.block_length
tstart = self.cur_start / self.sample_rate
tend = self.cur_stop / self.sample_rate
tlen = self.block_length / self.sample_rate
self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
self.gui.fileTimeLengthLineEdit.setText(Qt.QString("%1").arg(tlen))
self.gui.plotHBar.setPageStep(self.block_length)
self.get_data(self.cur_start, self.cur_stop)
self.get_psd()
self.update_time_curves()
self.update_psd_curves()
# If there's a non-digit character, reset box
else:
self.set_file_pos_box(self.cur_start, self.cur_stop)
def file_time_length_changed(self):
tstart = self.gui.fileTimeStartLineEdit.text().toDouble()
tlength = self.gui.fileTimeLengthLineEdit.text().toDouble()
if((tstart[1] == True) and (tlength[1] == True)):
self.cur_start = int(tstart[0] * self.sample_rate)
self.block_length = int(tlength[0] * self.sample_rate)
self.cur_stop = self.cur_start + self.block_length
tstart = self.cur_start / self.sample_rate
tend = self.cur_stop / self.sample_rate
tlen = self.block_length / self.sample_rate
self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
self.gui.fileTimeLengthLineEdit.setText(Qt.QString("%1").arg(tlen))
self.get_data(self.cur_start, self.cur_stop)
self.get_psd()
self.update_time_curves()
self.update_psd_curves()
# If there's a non-digit character, reset box
else:
self.set_file_pos_box(self.cur_start, self.cur_stop)
def update_time_curves(self):
self.icurve.setData(self.time, self.iq.imag)
self.rcurve.setData(self.time, self.iq.real)
# Reset the x-axis to the new time scale
iqmax = 1.5 * max(max(self.iq.real), max(self.iq.imag))
iqmin = 1.5 * min(min(self.iq.real), min(self.iq.imag))
self.gui.timePlot.setAxisScale(self.gui.timePlot.xBottom,
min(self.time),
max(self.time))
self.gui.timePlot.setAxisScale(self.gui.timePlot.yLeft,
iqmin,
iqmax)
# Set the zoomer base to unzoom to the new axis
self.timeZoomer.setZoomBase()
self.gui.timePlot.replot()
def update_psd_curves(self):
self.psdcurve.setData(self.freq, self.iq_psd)
self.gui.freqPlot.setAxisScale(self.gui.freqPlot.xBottom,
min(self.freq),
max(self.freq))
# Set the zoomer base to unzoom to the new axis
self.freqZoomer.setZoomBase()
self.gui.freqPlot.replot()
def tabChanged(self, index):
self.gui.timePlot.replot()
self.gui.freqPlot.replot()
def color_black_on_white(self):
blue = QtGui.qRgb(0x00, 0x00, 0xFF)
red = QtGui.qRgb(0xFF, 0x00, 0x00)
blackBrush = Qt.QBrush(Qt.QColor("black"))
blueBrush = Qt.QBrush(Qt.QColor(blue))
redBrush = Qt.QBrush(Qt.QColor(red))
self.gui.timePlot.setCanvasBackground(Qt.QColor("white"))
self.gui.freqPlot.setCanvasBackground(Qt.QColor("white"))
self.picker.setTrackerPen(Qt.QPen(blackBrush, 2))
self.timeZoomer.setTrackerPen(Qt.QPen(blackBrush, 2))
self.timeZoomer.setRubberBandPen(Qt.QPen(blackBrush, 2))
self.freqZoomer.setTrackerPen(Qt.QPen(blackBrush, 2))
self.freqZoomer.setRubberBandPen(Qt.QPen(blackBrush, 2))
self.psdcurve.setPen(Qt.QPen(blueBrush, 1))
self.rcurve.setPen(Qt.QPen(blueBrush, 2))
self.icurve.setPen(Qt.QPen(redBrush, 2))
self.gui.timePlot.replot()
self.gui.freqPlot.replot()
def color_white_on_black(self):
white = QtGui.qRgb(0xFF, 0xFF, 0xFF)
red = QtGui.qRgb(0xFF, 0x00, 0x00)
whiteBrush = Qt.QBrush(Qt.QColor("white"))
whiteBrush = Qt.QBrush(Qt.QColor(white))
redBrush = Qt.QBrush(Qt.QColor(red))
self.gui.timePlot.setCanvasBackground(QtGui.QColor("black"))
self.gui.freqPlot.setCanvasBackground(QtGui.QColor("black"))
self.picker.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.timeZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.timeZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
self.freqZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.freqZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
self.psdcurve.setPen(Qt.QPen(whiteBrush, 1))
self.rcurve.setPen(Qt.QPen(whiteBrush, 2))
self.icurve.setPen(Qt.QPen(redBrush, 2))
self.gui.timePlot.replot()
self.gui.freqPlot.replot()
def color_green_on_black(self):
green = QtGui.qRgb(0x00, 0xFF, 0x00)
red = QtGui.qRgb(0xFF, 0x00, 0x50)
whiteBrush = Qt.QBrush(Qt.QColor("white"))
greenBrush = Qt.QBrush(Qt.QColor(green))
redBrush = Qt.QBrush(Qt.QColor(red))
self.gui.timePlot.setCanvasBackground(QtGui.QColor("black"))
self.gui.freqPlot.setCanvasBackground(QtGui.QColor("black"))
self.picker.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.timeZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.timeZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
self.freqZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.freqZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
self.psdcurve.setPen(Qt.QPen(greenBrush, 1))
self.rcurve.setPen(Qt.QPen(greenBrush, 2))
self.icurve.setPen(Qt.QPen(redBrush, 2))
self.gui.timePlot.replot()
self.gui.freqPlot.replot()
def color_blue_on_black(self):
blue = QtGui.qRgb(0x00, 0x00, 0xFF)
red = QtGui.qRgb(0xFF, 0x00, 0x00)
whiteBrush = Qt.QBrush(Qt.QColor("white"))
blueBrush = Qt.QBrush(Qt.QColor(blue))
redBrush = Qt.QBrush(Qt.QColor(red))
self.gui.timePlot.setCanvasBackground(QtGui.QColor("black"))
self.gui.freqPlot.setCanvasBackground(QtGui.QColor("black"))
self.picker.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.timeZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.timeZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
self.freqZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
self.freqZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
self.psdcurve.setPen(Qt.QPen(blueBrush, 1))
self.rcurve.setPen(Qt.QPen(blueBrush, 2))
self.icurve.setPen(Qt.QPen(redBrush, 2))
self.gui.timePlot.replot()
self.gui.freqPlot.replot()
def setup_options():
usage="%prog: [options] (input_filename)"
description = ""
parser = OptionParser(conflict_handler="resolve", usage=usage, description=description)
parser.add_option("-B", "--block-length", type="int", default=8192,
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]")
parser.add_option("", "--psd-size", type="int", default=2048,
help="Set the size of the PSD FFT [default=%default]")
parser.add_option("", "--spec-size", type="int", default=256,
help="Set the size of the spectrogram FFT [default=%default]")
return parser
def main(args):
parser = setup_options()
(options, args) = parser.parse_args ()
if(len(args) == 1):
filename = args[0]
else:
filename = None
app = Qt.QApplication(args)
gplt = gr_plot_qt(app, filename, options)
app.exec_()
if __name__ == '__main__':
main(sys.argv)
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