git.gag.com Git - debian/gnuradio/blob - gr-utils/src/python/gr_plot_qt.py

   1 #!/usr/bin/env python
   2
   3 try:
   4     import scipy
   5     from scipy import fftpack
   6 except ImportError:
   7     print "Please install SciPy to run this script (http://www.scipy.org/)"
   8     raise SystemExit, 1
   9
  10 import sys, os
  11 from PyQt4 import Qt, QtCore, QtGui
  12 import PyQt4.Qwt5 as Qwt
  13 from matplotlib import mlab
  14 from optparse import OptionParser
  15 from gnuradio import eng_notation
  16
  17 from pyqt_plot import Ui_MainWindow
  18
  19 class gr_plot_qt(QtGui.QMainWindow):
  20     def __init__(self, qapp, filename, options, parent=None):
  21         QtGui.QWidget.__init__(self, parent)
  22         self.gui = Ui_MainWindow()
  23         self.gui.setupUi(self)
  24
  25         self.block_length = options.block_length
  26         self.start = options.start
  27         self.sample_rate = options.sample_rate
  28         self.psdfftsize = options.psd_size
  29         self.specfftsize = options.spec_size
  30         self.winfunc = scipy.blackman
  31         self.sizeof_data = 8
  32         self.datatype = scipy.complex64
  33         self.iq = list()
  34         self.time = list()
  35
  36         # Set up basic plot attributes
  37         self.gui.timePlot.setAxisTitle(self.gui.timePlot.xBottom, "Time (sec)")
  38         self.gui.timePlot.setAxisTitle(self.gui.timePlot.yLeft, "Amplitude (V)")
  39         self.gui.freqPlot.setAxisTitle(self.gui.freqPlot.xBottom, "Frequency (Hz)")
  40         self.gui.freqPlot.setAxisTitle(self.gui.freqPlot.yLeft, "Magnitude (dB)")
  41
  42         # Set up FFT size combo box
  43         self.gui.fftComboBox.addItems(["128", "256", "512", "1024", "2048",
  44                                        "4096", "8192", "16384", "32768"])
  45         pos = self.gui.fftComboBox.findText(Qt.QString("%1").arg(self.psdfftsize))
  46         self.gui.fftComboBox.setCurrentIndex(pos)
  47         self.connect(self.gui.fftComboBox,
  48                      Qt.SIGNAL("activated (const QString&)"),
  49                      self.fftComboBoxEdit)
  50
  51         # Set up color scheme box
  52         self.color_modes = {"Black on White" : self.color_black_on_white,
  53                             "White on Black" : self.color_white_on_black,
  54                             "Blue on Black"  : self.color_blue_on_black,
  55                             "Green on Black" : self.color_green_on_black}
  56         self.gui.colorComboBox.addItems(self.color_modes.keys())
  57         pos = self.gui.colorComboBox.findText("Blue on Black")
  58         self.gui.colorComboBox.setCurrentIndex(pos)
  59         self.connect(self.gui.colorComboBox,
  60                      Qt.SIGNAL("activated (const QString&)"),
  61                      self.colorComboBoxEdit)
  62
  63
  64         # Create zoom functionality for the plots
  65         self.timeZoomer = Qwt.QwtPlotZoomer(self.gui.timePlot.xBottom,
  66                                             self.gui.timePlot.yLeft,
  67                                             Qwt.QwtPicker.PointSelection,
  68                                             Qwt.QwtPicker.AlwaysOn,
  69                                             self.gui.timePlot.canvas())
  70
  71         self.freqZoomer = Qwt.QwtPlotZoomer(self.gui.freqPlot.xBottom,
  72                                             self.gui.freqPlot.yLeft,
  73                                             Qwt.QwtPicker.PointSelection,
  74                                             Qwt.QwtPicker.AlwaysOn,
  75                                             self.gui.freqPlot.canvas())
  76
  77         self.picker = Qwt.QwtPlotPicker(self.gui.timePlot.xBottom,
  78                                         self.gui.timePlot.yLeft,
  79                                         Qwt.QwtPicker.PointSelection,
  80                                         Qwt.QwtPlotPicker.CrossRubberBand,
  81                                         Qwt.QwtPicker.AlwaysOn,
  82                                         self.gui.timePlot.canvas())
  83         self.picker.connect(self.picker,
  84                             Qt.SIGNAL('selected(const QwtDoublePoint&)'),
  85                             self.clickMe)
  86
  87         # Set up action when tab is changed
  88         self.connect(self.gui.tabGroup,
  89                      Qt.SIGNAL("currentChanged (int)"),
  90                      self.tabChanged)
  91
  92         # Add a legend to the Time plot
  93         legend_real = Qwt.QwtLegend()
  94         self.gui.timePlot.insertLegend(legend_real)
  95
  96         # Set up slider
  97         self.gui.plotHBar.setSingleStep(1)
  98         self.gui.plotHBar.setPageStep(self.block_length)
  99         self.gui.plotHBar.setMinimum(0)
 100         self.gui.plotHBar.setMaximum(self.block_length)
 101         self.connect(self.gui.plotHBar,
 102                      Qt.SIGNAL("valueChanged(int)"),
 103                      self.sliderMoved)
 104
 105         # Connect Open action to Open Dialog box
 106         self.connect(self.gui.action_open,
 107                      Qt.SIGNAL("activated()"),
 108                      self.open_file)
 109
 110         # Set up file position boxes to update current figure
 111         self.connect(self.gui.filePosStartLineEdit,
 112                      Qt.SIGNAL("editingFinished()"),
 113                      self.file_position_changed)
 114         self.connect(self.gui.filePosStopLineEdit,
 115                      Qt.SIGNAL("editingFinished()"),
 116                      self.file_position_changed)
 117         self.connect(self.gui.filePosLengthLineEdit,
 118                      Qt.SIGNAL("editingFinished()"),
 119                      self.file_length_changed)
 120
 121         self.connect(self.gui.fileTimeStartLineEdit,
 122                      Qt.SIGNAL("editingFinished()"),
 123                      self.file_time_changed)
 124         self.connect(self.gui.fileTimeStopLineEdit,
 125                      Qt.SIGNAL("editingFinished()"),
 126                      self.file_time_changed)
 127         self.connect(self.gui.fileTimeLengthLineEdit,
 128                      Qt.SIGNAL("editingFinished()"),
 129                      self.file_time_length_changed)
 130
 131         self.rcurve = Qwt.QwtPlotCurve("Real")
 132         self.icurve = Qwt.QwtPlotCurve("Imaginary")
 133
 134         self.icurve.attach(self.gui.timePlot)
 135         self.rcurve.attach(self.gui.timePlot)
 136
 137         self.psdcurve = Qwt.QwtPlotCurve("PSD")
 138         self.psdcurve.attach(self.gui.freqPlot)
 139
 140         # Set up initial color scheme
 141         self.color_modes["Blue on Black"]()
 142
 143         self.set_sample_rate(self.sample_rate)
 144         self.connect(self.gui.sampleRateLineEdit,
 145                      Qt.SIGNAL("editingFinished()"),
 146                      self.sample_rate_changed)
 147
 148         if(filename is not None):
 149             self.initialize(filename)
 150
 151         self.show()
 152
 153     def open_file(self):
 154         filename = Qt.QFileDialog.getOpenFileName(self, "Open", ".")
 155         print filename
 156         self.initialize(filename)
 157
 158     def initialize(self, filename):
 159         self.hfile = open(filename, "r")
 160
 161         self.setWindowTitle(("GNU Radio File Plot Utility: %s" % filename))
 162
 163         self.cur_start = 0
 164         self.cur_stop = self.block_length
 165
 166         self.init_data_input()
 167         self.get_data(self.cur_start, self.cur_stop)
 168         self.get_psd()
 169         self.gui.plotHBar.setSliderPosition(0)
 170         self.gui.plotHBar.setMaximum(self.signal_size)
 171
 172         self.update_time_curves()
 173         self.update_psd_curves()
 174
 175     def init_data_input(self):
 176         self.hfile.seek(0, os.SEEK_END)
 177         self.signal_size = self.hfile.tell()/self.sizeof_data
 178         print "Sizeof File: ", self.signal_size
 179         self.hfile.seek(0, os.SEEK_SET)
 180
 181     def get_data(self, start, end):
 182         if(end > start):
 183             self.hfile.seek(start*self.sizeof_data, os.SEEK_SET)
 184             self.position = start
 185             iq = scipy.fromfile(self.hfile, dtype=self.datatype,
 186                                 count=end-start)
 187             if(len(iq) < (end-start)):
 188                 print "End of File"
 189             else:
 190                 tstep = 1.0 / self.sample_rate
 191                 self.iq = iq
 192                 self.time = [tstep*(self.position + i) for i in xrange(len(self.iq))]
 193
 194             self.set_file_pos_box(start, end)
 195         else:
 196             # Do we want to do anything about this?
 197             pass
 198
 199     def get_psd(self):
 200         winpoints = self.winfunc(self.psdfftsize)
 201         iq_psd, freq = mlab.psd(self.iq, Fs=self.sample_rate,
 202                                 NFFT=self.psdfftsize,
 203                                 noverlap=self.psdfftsize/4.0,
 204                                 window=winpoints,
 205                                 scale_by_freq=False)
 206         self.iq_psd = 10.0*scipy.log10(abs(fftpack.fftshift(iq_psd)))
 207         self.freq = freq - self.sample_rate/2.0
 208
 209
 210     def clickMe(self, qPoint):
 211         print qPoint.x()
 212
 213     def fftComboBoxEdit(self, fftSize):
 214         self.psdfftsize = fftSize.toInt()[0]
 215         self.get_psd()
 216         self.update_psd_curves()
 217
 218     def colorComboBoxEdit(self, colorSelection):
 219         colorstr = str(colorSelection.toAscii())
 220         color_func = self.color_modes[colorstr]
 221         color_func()
 222
 223     def sliderMoved(self, value):
 224         pos_start = value
 225         pos_end = value + self.gui.plotHBar.pageStep()
 226
 227         self.get_data(pos_start, pos_end)
 228         self.get_psd()
 229         self.update_time_curves()
 230         self.update_psd_curves()
 231
 232     def set_sample_rate(self, sr):
 233         self.sample_rate = sr
 234         srstr = eng_notation.num_to_str(self.sample_rate)
 235         self.gui.sampleRateLineEdit.setText(Qt.QString("%1").arg(srstr))
 236
 237     def sample_rate_changed(self):
 238         srstr = self.gui.sampleRateLineEdit.text().toAscii()
 239         self.sample_rate = eng_notation.str_to_num(srstr)
 240         self.set_file_pos_box(self.cur_start, self.cur_stop)
 241         self.get_data(self.cur_start, self.cur_stop)
 242         self.get_psd()
 243         self.update_time_curves()
 244         self.update_psd_curves()
 245
 246     def set_file_pos_box(self, start, end):
 247         tstart = start / self.sample_rate
 248         tend = end / self.sample_rate
 249
 250         self.gui.filePosStartLineEdit.setText(Qt.QString("%1").arg(start))
 251         self.gui.filePosStopLineEdit.setText(Qt.QString("%1").arg(end))
 252         self.gui.filePosLengthLineEdit.setText(Qt.QString("%1").arg(end-start))
 253
 254         self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
 255         self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
 256         self.gui.fileTimeLengthLineEdit.setText(Qt.QString("%1").arg(tend-tstart))
 257
 258     def file_position_changed(self):
 259         start  = self.gui.filePosStartLineEdit.text().toInt()
 260         end    = self.gui.filePosStopLineEdit.text().toInt()
 261         if((start[1] == True) and (end[1] == True)):
 262             self.cur_start = start[0]
 263             self.cur_stop = end[0]
 264
 265             tstart = self.cur_start / self.sample_rate
 266             tend = self.cur_stop / self.sample_rate
 267             self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
 268             self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
 269
 270             self.get_data(self.cur_start, self.cur_stop)
 271
 272             self.update_time_curves()
 273             self.update_psd_curves()
 274
 275         # If there's a non-digit character, reset box
 276         else:
 277             self.set_file_pos_box(self.cur_start, self.cur_stop)
 278
 279     def file_time_changed(self):
 280         tstart = self.gui.fileTimeStartLineEdit.text().toDouble()
 281         tstop  = self.gui.fileTimeStopLineEdit.text().toDouble()
 282         if((tstart[1] == True) and (tstop[1] == True)):
 283             self.cur_start = int(tstart[0] * self.sample_rate)
 284             self.cur_stop = int(tstop[0] * self.sample_rate)
 285             self.get_data(self.cur_start, self.cur_stop)
 286
 287             self.gui.filePosStartLineEdit.setText(Qt.QString("%1").arg(self.cur_start))
 288             self.gui.filePosStopLineEdit.setText(Qt.QString("%1").arg(self.cur_stop))
 289
 290             self.update_time_curves()
 291             self.update_psd_curves()
 292         # If there's a non-digit character, reset box
 293         else:
 294             self.set_file_pos_box(self.cur_start, self.cur_stop)
 295
 296     def file_length_changed(self):
 297         start = self.gui.filePosStartLineEdit.text().toInt()
 298         length = self.gui.filePosLengthLineEdit.text().toInt()
 299         if((start[1] == True) and (length[1] == True)):
 300             self.cur_start = start[0]
 301             self.block_length = length[0]
 302             self.cur_stop = self.cur_start + self.block_length
 303
 304             tstart = self.cur_start / self.sample_rate
 305             tend = self.cur_stop / self.sample_rate
 306             tlen = self.block_length / self.sample_rate
 307             self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
 308             self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
 309             self.gui.fileTimeLengthLineEdit.setText(Qt.QString("%1").arg(tlen))
 310
 311             self.gui.plotHBar.setPageStep(self.block_length)
 312
 313             self.get_data(self.cur_start, self.cur_stop)
 314             self.get_psd()
 315
 316             self.update_time_curves()
 317             self.update_psd_curves()
 318         # If there's a non-digit character, reset box
 319         else:
 320             self.set_file_pos_box(self.cur_start, self.cur_stop)
 321
 322     def file_time_length_changed(self):
 323         tstart = self.gui.fileTimeStartLineEdit.text().toDouble()
 324         tlength = self.gui.fileTimeLengthLineEdit.text().toDouble()
 325         if((tstart[1] == True) and (tlength[1] == True)):
 326             self.cur_start = int(tstart[0] * self.sample_rate)
 327             self.block_length = int(tlength[0] * self.sample_rate)
 328             self.cur_stop = self.cur_start + self.block_length
 329
 330             tstart = self.cur_start / self.sample_rate
 331             tend = self.cur_stop / self.sample_rate
 332             tlen = self.block_length / self.sample_rate
 333             self.gui.fileTimeStartLineEdit.setText(Qt.QString("%1").arg(tstart))
 334             self.gui.fileTimeStopLineEdit.setText(Qt.QString("%1").arg(tend))
 335             self.gui.fileTimeLengthLineEdit.setText(Qt.QString("%1").arg(tlen))
 336
 337             self.get_data(self.cur_start, self.cur_stop)
 338             self.get_psd()
 339
 340             self.update_time_curves()
 341             self.update_psd_curves()
 342         # If there's a non-digit character, reset box
 343         else:
 344             self.set_file_pos_box(self.cur_start, self.cur_stop)
 345
 346
 347     def update_time_curves(self):
 348         self.icurve.setData(self.time, self.iq.imag)
 349         self.rcurve.setData(self.time, self.iq.real)
 350
 351         # Reset the x-axis to the new time scale
 352         iqmax = 1.5 * max(max(self.iq.real), max(self.iq.imag))
 353         iqmin = 1.5 * min(min(self.iq.real), min(self.iq.imag))
 354         self.gui.timePlot.setAxisScale(self.gui.timePlot.xBottom,
 355                                        min(self.time),
 356                                        max(self.time))
 357         self.gui.timePlot.setAxisScale(self.gui.timePlot.yLeft,
 358                                        iqmin,
 359                                        iqmax)
 360
 361         # Set the zoomer base to unzoom to the new axis
 362         self.timeZoomer.setZoomBase()
 363
 364         self.gui.timePlot.replot()
 365
 366     def update_psd_curves(self):
 367         self.psdcurve.setData(self.freq, self.iq_psd)
 368
 369         self.gui.freqPlot.setAxisScale(self.gui.freqPlot.xBottom,
 370                                        min(self.freq),
 371                                        max(self.freq))
 372
 373         # Set the zoomer base to unzoom to the new axis
 374         self.freqZoomer.setZoomBase()
 375
 376         self.gui.freqPlot.replot()
 377
 378     def tabChanged(self, index):
 379         self.gui.timePlot.replot()
 380         self.gui.freqPlot.replot()
 381
 382     def color_black_on_white(self):
 383         blue = QtGui.qRgb(0x00, 0x00, 0xFF)
 384         red = QtGui.qRgb(0xFF, 0x00, 0x00)
 385
 386         blackBrush = Qt.QBrush(Qt.QColor("black"))
 387         blueBrush = Qt.QBrush(Qt.QColor(blue))
 388         redBrush = Qt.QBrush(Qt.QColor(red))
 389
 390         self.gui.timePlot.setCanvasBackground(Qt.QColor("white"))
 391         self.gui.freqPlot.setCanvasBackground(Qt.QColor("white"))
 392         self.picker.setTrackerPen(Qt.QPen(blackBrush, 2))
 393         self.timeZoomer.setTrackerPen(Qt.QPen(blackBrush, 2))
 394         self.timeZoomer.setRubberBandPen(Qt.QPen(blackBrush, 2))
 395         self.freqZoomer.setTrackerPen(Qt.QPen(blackBrush, 2))
 396         self.freqZoomer.setRubberBandPen(Qt.QPen(blackBrush, 2))
 397         self.psdcurve.setPen(Qt.QPen(blueBrush, 1))
 398         self.rcurve.setPen(Qt.QPen(blueBrush, 2))
 399         self.icurve.setPen(Qt.QPen(redBrush, 2))
 400
 401         self.gui.timePlot.replot()
 402         self.gui.freqPlot.replot()
 403
 404     def color_white_on_black(self):
 405         white = QtGui.qRgb(0xFF, 0xFF, 0xFF)
 406         red = QtGui.qRgb(0xFF, 0x00, 0x00)
 407
 408         whiteBrush = Qt.QBrush(Qt.QColor("white"))
 409         whiteBrush = Qt.QBrush(Qt.QColor(white))
 410         redBrush = Qt.QBrush(Qt.QColor(red))
 411
 412         self.gui.timePlot.setCanvasBackground(QtGui.QColor("black"))
 413         self.gui.freqPlot.setCanvasBackground(QtGui.QColor("black"))
 414         self.picker.setTrackerPen(Qt.QPen(whiteBrush, 2))
 415         self.timeZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
 416         self.timeZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
 417         self.freqZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
 418         self.freqZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
 419         self.psdcurve.setPen(Qt.QPen(whiteBrush, 1))
 420         self.rcurve.setPen(Qt.QPen(whiteBrush, 2))
 421         self.icurve.setPen(Qt.QPen(redBrush, 2))
 422
 423         self.gui.timePlot.replot()
 424         self.gui.freqPlot.replot()
 425
 426
 427     def color_green_on_black(self):
 428         green = QtGui.qRgb(0x00, 0xFF, 0x00)
 429         red = QtGui.qRgb(0xFF, 0x00, 0x50)
 430
 431         whiteBrush = Qt.QBrush(Qt.QColor("white"))
 432         greenBrush = Qt.QBrush(Qt.QColor(green))
 433         redBrush = Qt.QBrush(Qt.QColor(red))
 434
 435         self.gui.timePlot.setCanvasBackground(QtGui.QColor("black"))
 436         self.gui.freqPlot.setCanvasBackground(QtGui.QColor("black"))
 437         self.picker.setTrackerPen(Qt.QPen(whiteBrush, 2))
 438         self.timeZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
 439         self.timeZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
 440         self.freqZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
 441         self.freqZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
 442         self.psdcurve.setPen(Qt.QPen(greenBrush, 1))
 443         self.rcurve.setPen(Qt.QPen(greenBrush, 2))
 444         self.icurve.setPen(Qt.QPen(redBrush, 2))
 445
 446         self.gui.timePlot.replot()
 447         self.gui.freqPlot.replot()
 448
 449     def color_blue_on_black(self):
 450         blue = QtGui.qRgb(0x00, 0x00, 0xFF)
 451         red = QtGui.qRgb(0xFF, 0x00, 0x00)
 452
 453         whiteBrush = Qt.QBrush(Qt.QColor("white"))
 454         blueBrush = Qt.QBrush(Qt.QColor(blue))
 455         redBrush = Qt.QBrush(Qt.QColor(red))
 456
 457         self.gui.timePlot.setCanvasBackground(QtGui.QColor("black"))
 458         self.gui.freqPlot.setCanvasBackground(QtGui.QColor("black"))
 459         self.picker.setTrackerPen(Qt.QPen(whiteBrush, 2))
 460         self.timeZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
 461         self.timeZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
 462         self.freqZoomer.setTrackerPen(Qt.QPen(whiteBrush, 2))
 463         self.freqZoomer.setRubberBandPen(Qt.QPen(whiteBrush, 2))
 464         self.psdcurve.setPen(Qt.QPen(blueBrush, 1))
 465         self.rcurve.setPen(Qt.QPen(blueBrush, 2))
 466         self.icurve.setPen(Qt.QPen(redBrush, 2))
 467
 468         self.gui.timePlot.replot()
 469         self.gui.freqPlot.replot()
 470
 471 def setup_options():
 472     usage="%prog: [options] (input_filename)"
 473     description = ""
 474
 475     parser = OptionParser(conflict_handler="resolve", usage=usage, description=description)
 476     parser.add_option("-B", "--block-length", type="int", default=8192,
 477                       help="Specify the block size [default=%default]")
 478     parser.add_option("-s", "--start", type="int", default=0,
 479                       help="Specify where to start in the file [default=%default]")
 480     parser.add_option("-R", "--sample-rate", type="float", default=1.0,
 481                       help="Set the sampler rate of the data [default=%default]")
 482     parser.add_option("", "--psd-size", type="int", default=2048,
 483                       help="Set the size of the PSD FFT [default=%default]")
 484     parser.add_option("", "--spec-size", type="int", default=256,
 485                       help="Set the size of the spectrogram FFT [default=%default]")
 486
 487     return parser
 488
 489 def main(args):
 490     parser = setup_options()
 491     (options, args) = parser.parse_args ()
 492
 493     if(len(args) == 1):
 494         filename = args[0]
 495     else:
 496         filename = None
 497
 498     app = Qt.QApplication(args)
 499     gplt = gr_plot_qt(app, filename, options)
 500     app.exec_()
 501
 502 if __name__ == '__main__':
 503     main(sys.argv)
 504