Adding a spectrogram plot. The axis need work.
authorTom Rondeau <trondeau@molly.home>
Tue, 25 Aug 2009 21:35:56 +0000 (17:35 -0400)
committerTom Rondeau <trondeau@molly.home>
Tue, 25 Aug 2009 21:35:56 +0000 (17:35 -0400)
gr-utils/src/python/gr_plot_qt.py
gr-utils/src/python/pyqt_plot.py
gr-utils/src/python/pyqt_plot.ui

index e772151f0bfdbf148ca45ca55496862b2369d67e..958be19cafe3572122ce25506518aca5d95c6bb5 100755 (executable)
@@ -16,6 +16,36 @@ from gnuradio import eng_notation
 
 from pyqt_plot import Ui_MainWindow
 
+class SpectrogramData(Qwt.QwtRasterData):
+
+    def __init__(self, f, t):
+        Qwt.QwtArrayData.__init__(self, Qt.QRectF(0, 0, 0, 0))
+        self.sp = scipy.array([[0], [0]])
+
+    def set_data(self, xfreq, ytime, data):
+        self.sp = data
+        self.freq = xfreq
+        self.time = ytime
+        boundingBox = Qt.QRectF(0, 0, self.freq.size, self.time.size)
+        self.setBoundingRect(boundingBox)
+
+    def rasterHint(self, rect):
+        return Qt.QSize(self.sp.shape[0], self.sp.shape[1])
+        
+    def copy(self):
+        return self
+
+    def range(self):
+        
+        return Qwt.QwtDoubleInterval(self.sp.min(), self.sp.max())
+
+    def value(self, x, y):
+        #print x, y
+        x = int(x)
+        y = int(y)
+        return self.sp[x][y-1]
+
+
 class gr_plot_qt(QtGui.QMainWindow):
     def __init__(self, qapp, filename, options, parent=None):
         QtGui.QWidget.__init__(self, parent)
@@ -32,7 +62,7 @@ class gr_plot_qt(QtGui.QMainWindow):
         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)")
@@ -40,13 +70,21 @@ class gr_plot_qt(QtGui.QMainWindow):
         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,
+        self.fftsizes = ["128", "256", "512", "1024", "2048",
+                         "4096", "8192", "16384", "32768"]
+        self.gui.psdFFTComboBox.addItems(self.fftsizes)
+        self.gui.specFFTComboBox.addItems(self.fftsizes)
+        pos = self.gui.psdFFTComboBox.findText(Qt.QString("%1").arg(self.psdfftsize))
+        self.gui.psdFFTComboBox.setCurrentIndex(pos)
+        pos = self.gui.specFFTComboBox.findText(Qt.QString("%1").arg(self.specfftsize))
+        self.gui.specFFTComboBox.setCurrentIndex(pos)
+
+        self.connect(self.gui.psdFFTComboBox,
+                     Qt.SIGNAL("activated (const QString&)"),
+                     self.psdFFTComboBoxEdit)
+        self.connect(self.gui.specFFTComboBox,
                      Qt.SIGNAL("activated (const QString&)"),
-                     self.fftComboBoxEdit)
+                     self.specFFTComboBoxEdit)
 
         # Set up color scheme box
         self.color_modes = {"Black on White" : self.color_black_on_white,
@@ -74,6 +112,12 @@ class gr_plot_qt(QtGui.QMainWindow):
                                             Qwt.QwtPicker.AlwaysOn,
                                             self.gui.freqPlot.canvas())
 
+        self.specZoomer = Qwt.QwtPlotZoomer(self.gui.specPlot.xBottom,
+                                            self.gui.specPlot.yLeft,
+                                            Qwt.QwtPicker.PointSelection,
+                                            Qwt.QwtPicker.AlwaysOn,
+                                            self.gui.specPlot.canvas())
+
         self.picker = Qwt.QwtPlotPicker(self.gui.timePlot.xBottom,
                                         self.gui.timePlot.yLeft,
                                         Qwt.QwtPicker.PointSelection,
@@ -137,6 +181,21 @@ class gr_plot_qt(QtGui.QMainWindow):
         self.psdcurve = Qwt.QwtPlotCurve("PSD")
         self.psdcurve.attach(self.gui.freqPlot)
 
+        # Set up specTab plot as a spectrogram
+        self.specdata = SpectrogramData(range(0, 10), range(0, 10))
+
+        colorMap = Qwt.QwtLinearColorMap(Qt.Qt.darkCyan, Qt.Qt.red)
+        colorMap.addColorStop(0.1, Qt.Qt.cyan)
+        colorMap.addColorStop(0.6, Qt.Qt.green)
+        colorMap.addColorStop(0.95, Qt.Qt.yellow)
+
+        self.spec = Qwt.QwtPlotSpectrogram()
+        self.spec.setColorMap(colorMap)
+        self.spec.attach(self.gui.specPlot)
+        self.spec.setContourLevels([0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5])
+        self.spec.setDisplayMode(Qwt.QwtPlotSpectrogram.ImageMode, True)
+        self.spec.setData(self.specdata)
+
         # Set up initial color scheme
         self.color_modes["Blue on Black"]()
 
@@ -172,12 +231,14 @@ class gr_plot_qt(QtGui.QMainWindow):
         self.init_data_input()
         self.get_data(self.cur_start, self.cur_stop)
         self.get_psd()
+        self.get_specgram() 
         self.gui.plotHBar.setSliderPosition(0)
         self.gui.plotHBar.setMaximum(self.signal_size)
 
 
         self.update_time_curves()
         self.update_psd_curves()
+        self.update_specgram_curves()
 
     def init_data_input(self):
         self.hfile.seek(0, os.SEEK_END)
@@ -218,17 +279,34 @@ class gr_plot_qt(QtGui.QMainWindow):
                                 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 get_specgram(self):
+        winpoints = self.winfunc(self.specfftsize)
+        iq_spec, f, t = mlab.specgram(self.iq, Fs=self.sample_rate,
+                                      NFFT=self.specfftsize,
+                                      noverlap=self.specfftsize/4.0,
+                                      window=winpoints,
+                                      scale_by_freq=False)
+        
+        self.iq_spec = 10.0*scipy.log10(abs(iq_spec))
+        self.spec_f = f
+        self.spec_t = t
 
     def clickMe(self, qPoint):
         print qPoint.x()
 
-    def fftComboBoxEdit(self, fftSize):
+    def psdFFTComboBoxEdit(self, fftSize):
         self.psdfftsize = fftSize.toInt()[0]
         self.get_psd()
         self.update_psd_curves()
+
+    def specFFTComboBoxEdit(self, fftSize):
+        self.specfftsize = fftSize.toInt()[0]
+        self.get_specgram()
+        self.update_specgram_curves()
         
     def colorComboBoxEdit(self, colorSelection):
         colorstr = str(colorSelection.toAscii())
@@ -241,8 +319,10 @@ class gr_plot_qt(QtGui.QMainWindow):
 
         self.get_data(pos_start, pos_end)
         self.get_psd()
+        self.get_specgram()
         self.update_time_curves()
         self.update_psd_curves()
+        self.update_specgram_curves()
 
     def set_sample_rate(self, sr):
         self.sample_rate = sr
@@ -255,6 +335,7 @@ class gr_plot_qt(QtGui.QMainWindow):
         self.set_file_pos_box(self.cur_start, self.cur_stop)
         self.get_data(self.cur_start, self.cur_stop)
         self.get_psd()
+        self.get_specgram()
         self.update_time_curves()
         self.update_psd_curves()
 
@@ -286,6 +367,7 @@ class gr_plot_qt(QtGui.QMainWindow):
 
             self.update_time_curves()
             self.update_psd_curves()
+            self.update_specgram_curves()
 
         # If there's a non-digit character, reset box
         else:
@@ -304,6 +386,7 @@ class gr_plot_qt(QtGui.QMainWindow):
 
             self.update_time_curves()
             self.update_psd_curves()
+            self.update_specgram_curves()
         # If there's a non-digit character, reset box
         else:
             self.set_file_pos_box(self.cur_start, self.cur_stop)
@@ -328,9 +411,11 @@ class gr_plot_qt(QtGui.QMainWindow):
 
             self.get_data(self.cur_start, self.cur_stop)
             self.get_psd()
+            self.get_specgram()
 
             self.update_time_curves()
             self.update_psd_curves()
+            self.update_specgram_curves()
         # If there's a non-digit character, reset box
         else:
             self.set_file_pos_box(self.cur_start, self.cur_stop)
@@ -352,9 +437,11 @@ class gr_plot_qt(QtGui.QMainWindow):
 
             self.get_data(self.cur_start, self.cur_stop)
             self.get_psd()
+            self.get_specgram()
 
             self.update_time_curves()
             self.update_psd_curves()
+            self.update_specgram_curves()
         # If there's a non-digit character, reset box
         else:
             self.set_file_pos_box(self.cur_start, self.cur_stop)
@@ -385,12 +472,22 @@ class gr_plot_qt(QtGui.QMainWindow):
         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 update_specgram_curves(self):
+        # We don't have to reset the data for the speccurve here
+        # since this is taken care of in the SpectrogramData class
+        self.specdata.set_data(self.spec_f, self.spec_t, self.iq_spec)
+
+        # Set the zoomer base to unzoom to the new axis
+        self.specZoomer.setZoomBase()
+
+        self.gui.specPlot.replot()
+
     def tabChanged(self, index):
         self.gui.timePlot.replot()
         self.gui.freqPlot.replot()
@@ -497,7 +594,7 @@ def setup_options():
                       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,
+    parser.add_option("", "--spec-size", type="int", default=2048,
                       help="Set the size of the spectrogram FFT [default=%default]")
 
     return parser
index 796b6a238d2e8681cf10ec5ac9c0d37c21c58481..2724d85461ca51099228a33917ce00d99d1a5c0d 100644 (file)
@@ -2,8 +2,8 @@
 
 # Form implementation generated from reading ui file 'pyqt_plot.ui'
 #
-# Created: Tue Aug 11 23:12:27 2009
-#      by: PyQt4 UI code generator 4.4.4
+# Created: Tue Aug 25 15:28:55 2009
+#      by: PyQt4 UI code generator 4.4.3
 #
 # WARNING! All changes made in this file will be lost!
 
@@ -38,22 +38,43 @@ class Ui_MainWindow(object):
         self.fftPropBox = QtGui.QGroupBox(self.freqTab)
         self.fftPropBox.setMinimumSize(QtCore.QSize(160, 0))
         self.fftPropBox.setObjectName("fftPropBox")
-        self.formLayoutWidget = QtGui.QWidget(self.fftPropBox)
-        self.formLayoutWidget.setGeometry(QtCore.QRect(0, 20, 151, 191))
-        self.formLayoutWidget.setObjectName("formLayoutWidget")
-        self.formLayout = QtGui.QFormLayout(self.formLayoutWidget)
-        self.formLayout.setObjectName("formLayout")
-        self.fftSizeLabel = QtGui.QLabel(self.formLayoutWidget)
-        self.fftSizeLabel.setObjectName("fftSizeLabel")
-        self.formLayout.setWidget(0, QtGui.QFormLayout.LabelRole, self.fftSizeLabel)
-        self.fftComboBox = QtGui.QComboBox(self.formLayoutWidget)
-        self.fftComboBox.setObjectName("fftComboBox")
-        self.formLayout.setWidget(0, QtGui.QFormLayout.FieldRole, self.fftComboBox)
+        self.formLayout_4 = QtGui.QFormLayout(self.fftPropBox)
+        self.formLayout_4.setFieldGrowthPolicy(QtGui.QFormLayout.AllNonFixedFieldsGrow)
+        self.formLayout_4.setObjectName("formLayout_4")
+        self.psdFFTComboBox = QtGui.QComboBox(self.fftPropBox)
+        self.psdFFTComboBox.setMinimumSize(QtCore.QSize(96, 0))
+        self.psdFFTComboBox.setMaximumSize(QtCore.QSize(96, 16777215))
+        self.psdFFTComboBox.setObjectName("psdFFTComboBox")
+        self.formLayout_4.setWidget(0, QtGui.QFormLayout.FieldRole, self.psdFFTComboBox)
+        self.psdFFTSizeLabel = QtGui.QLabel(self.fftPropBox)
+        self.psdFFTSizeLabel.setObjectName("psdFFTSizeLabel")
+        self.formLayout_4.setWidget(0, QtGui.QFormLayout.LabelRole, self.psdFFTSizeLabel)
         self.horizontalLayout_2.addWidget(self.fftPropBox)
         self.freqPlot = Qwt5.QwtPlot(self.freqTab)
         self.freqPlot.setObjectName("freqPlot")
         self.horizontalLayout_2.addWidget(self.freqPlot)
         self.tabGroup.addTab(self.freqTab, "")
+        self.specTab = QtGui.QWidget()
+        self.specTab.setObjectName("specTab")
+        self.horizontalLayout_3 = QtGui.QHBoxLayout(self.specTab)
+        self.horizontalLayout_3.setObjectName("horizontalLayout_3")
+        self.groupBox = QtGui.QGroupBox(self.specTab)
+        self.groupBox.setObjectName("groupBox")
+        self.formLayout_3 = QtGui.QFormLayout(self.groupBox)
+        self.formLayout_3.setObjectName("formLayout_3")
+        self.specFFTLabel = QtGui.QLabel(self.groupBox)
+        self.specFFTLabel.setObjectName("specFFTLabel")
+        self.formLayout_3.setWidget(1, QtGui.QFormLayout.LabelRole, self.specFFTLabel)
+        self.specFFTComboBox = QtGui.QComboBox(self.groupBox)
+        self.specFFTComboBox.setMinimumSize(QtCore.QSize(96, 0))
+        self.specFFTComboBox.setMaximumSize(QtCore.QSize(96, 16777215))
+        self.specFFTComboBox.setObjectName("specFFTComboBox")
+        self.formLayout_3.setWidget(1, QtGui.QFormLayout.FieldRole, self.specFFTComboBox)
+        self.horizontalLayout_3.addWidget(self.groupBox)
+        self.specPlot = Qwt5.QwtPlot(self.specTab)
+        self.specPlot.setObjectName("specPlot")
+        self.horizontalLayout_3.addWidget(self.specPlot)
+        self.tabGroup.addTab(self.specTab, "")
         self.gridLayout.addWidget(self.tabGroup, 1, 0, 1, 1)
         self.filePosBox = QtGui.QGroupBox(self.centralwidget)
         self.filePosBox.setMinimumSize(QtCore.QSize(0, 120))
@@ -137,7 +158,7 @@ class Ui_MainWindow(object):
         self.gridLayout.addWidget(self.filePosBox, 3, 0, 1, 1)
         MainWindow.setCentralWidget(self.centralwidget)
         self.menubar = QtGui.QMenuBar(MainWindow)
-        self.menubar.setGeometry(QtCore.QRect(0, 0, 927, 25))
+        self.menubar.setGeometry(QtCore.QRect(0, 0, 927, 24))
         self.menubar.setObjectName("menubar")
         self.menu_File = QtGui.QMenu(self.menubar)
         self.menu_File.setObjectName("menu_File")
@@ -154,7 +175,7 @@ class Ui_MainWindow(object):
         self.menubar.addAction(self.menu_File.menuAction())
 
         self.retranslateUi(MainWindow)
-        self.tabGroup.setCurrentIndex(0)
+        self.tabGroup.setCurrentIndex(2)
         QtCore.QObject.connect(self.action_exit, QtCore.SIGNAL("activated()"), MainWindow.close)
         QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
@@ -162,8 +183,11 @@ class Ui_MainWindow(object):
         MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
         self.tabGroup.setTabText(self.tabGroup.indexOf(self.timeTab), QtGui.QApplication.translate("MainWindow", "Time Domain", None, QtGui.QApplication.UnicodeUTF8))
         self.fftPropBox.setTitle(QtGui.QApplication.translate("MainWindow", "FFT Properties", None, QtGui.QApplication.UnicodeUTF8))
-        self.fftSizeLabel.setText(QtGui.QApplication.translate("MainWindow", "FFT Size", None, QtGui.QApplication.UnicodeUTF8))
+        self.psdFFTSizeLabel.setText(QtGui.QApplication.translate("MainWindow", "FFT Size", None, QtGui.QApplication.UnicodeUTF8))
         self.tabGroup.setTabText(self.tabGroup.indexOf(self.freqTab), QtGui.QApplication.translate("MainWindow", "Frequency Domain", None, QtGui.QApplication.UnicodeUTF8))
+        self.groupBox.setTitle(QtGui.QApplication.translate("MainWindow", "Spectrogram Properties", None, QtGui.QApplication.UnicodeUTF8))
+        self.specFFTLabel.setText(QtGui.QApplication.translate("MainWindow", "FFT Size", None, QtGui.QApplication.UnicodeUTF8))
+        self.tabGroup.setTabText(self.tabGroup.indexOf(self.specTab), QtGui.QApplication.translate("MainWindow", "Spectrogram", None, QtGui.QApplication.UnicodeUTF8))
         self.filePosBox.setTitle(QtGui.QApplication.translate("MainWindow", "File Position", None, QtGui.QApplication.UnicodeUTF8))
         self.filePosStartLabel.setText(QtGui.QApplication.translate("MainWindow", "Start", None, QtGui.QApplication.UnicodeUTF8))
         self.filePosStopLabel.setText(QtGui.QApplication.translate("MainWindow", "Stop", None, QtGui.QApplication.UnicodeUTF8))
index f298735c41befbe5c0387c777c5b5817fb611b50..62125962b6d210ed793b376518dcf0db52535b51 100644 (file)
@@ -1,8 +1,7 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
+<ui version="4.0" >
  <class>MainWindow</class>
- <widget class="QMainWindow" name="MainWindow">
-  <property name="geometry">
+ <widget class="QMainWindow" name="MainWindow" >
+  <property name="geometry" >
    <rect>
     <x>0</x>
     <y>0</y>
     <height>696</height>
    </rect>
   </property>
-  <property name="windowTitle">
+  <property name="windowTitle" >
    <string>MainWindow</string>
   </property>
-  <widget class="QWidget" name="centralwidget">
-   <layout class="QGridLayout" name="gridLayout">
-    <item row="2" column="0" colspan="2">
-     <widget class="QScrollBar" name="plotHBar">
-      <property name="orientation">
+  <widget class="QWidget" name="centralwidget" >
+   <layout class="QGridLayout" name="gridLayout" >
+    <item row="2" column="0" colspan="2" >
+     <widget class="QScrollBar" name="plotHBar" >
+      <property name="orientation" >
        <enum>Qt::Horizontal</enum>
       </property>
      </widget>
     </item>
-    <item row="1" column="0">
-     <widget class="QTabWidget" name="tabGroup">
-      <property name="currentIndex">
-       <number>0</number>
+    <item row="1" column="0" >
+     <widget class="QTabWidget" name="tabGroup" >
+      <property name="currentIndex" >
+       <number>2</number>
       </property>
-      <widget class="QWidget" name="timeTab">
-       <attribute name="title">
+      <widget class="QWidget" name="timeTab" >
+       <attribute name="title" >
         <string>Time Domain</string>
        </attribute>
-       <layout class="QHBoxLayout" name="horizontalLayout">
+       <layout class="QHBoxLayout" name="horizontalLayout" >
         <item>
-         <widget class="QwtPlot" name="timePlot"/>
+         <widget class="QwtPlot" name="timePlot" />
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="freqTab">
-       <attribute name="title">
+      <widget class="QWidget" name="freqTab" >
+       <attribute name="title" >
         <string>Frequency Domain</string>
        </attribute>
-       <layout class="QHBoxLayout" name="horizontalLayout_2">
+       <layout class="QHBoxLayout" name="horizontalLayout_2" >
         <item>
-         <widget class="QGroupBox" name="fftPropBox">
-          <property name="minimumSize">
+         <widget class="QGroupBox" name="fftPropBox" >
+          <property name="minimumSize" >
            <size>
             <width>160</width>
             <height>0</height>
            </size>
           </property>
-          <property name="title">
+          <property name="title" >
            <string>FFT Properties</string>
           </property>
-          <widget class="QWidget" name="formLayoutWidget">
-           <property name="geometry">
-            <rect>
-             <x>0</x>
-             <y>20</y>
-             <width>151</width>
-             <height>191</height>
-            </rect>
+          <layout class="QFormLayout" name="formLayout_4" >
+           <property name="fieldGrowthPolicy" >
+            <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
            </property>
-           <layout class="QFormLayout" name="formLayout">
-            <item row="0" column="0">
-             <widget class="QLabel" name="fftSizeLabel">
-              <property name="text">
-               <string>FFT Size</string>
-              </property>
-             </widget>
-            </item>
-            <item row="0" column="1">
-             <widget class="QComboBox" name="fftComboBox"/>
-            </item>
-           </layout>
-          </widget>
+           <item row="0" column="1" >
+            <widget class="QComboBox" name="psdFFTComboBox" >
+             <property name="minimumSize" >
+              <size>
+               <width>96</width>
+               <height>0</height>
+              </size>
+             </property>
+             <property name="maximumSize" >
+              <size>
+               <width>96</width>
+               <height>16777215</height>
+              </size>
+             </property>
+            </widget>
+           </item>
+           <item row="0" column="0" >
+            <widget class="QLabel" name="psdFFTSizeLabel" >
+             <property name="text" >
+              <string>FFT Size</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
+          <zorder>formLayoutWidget</zorder>
+          <zorder>psdFFTComboBox</zorder>
+          <zorder>psdFFTSizeLabel</zorder>
+         </widget>
+        </item>
+        <item>
+         <widget class="QwtPlot" name="freqPlot" />
+        </item>
+       </layout>
+      </widget>
+      <widget class="QWidget" name="specTab" >
+       <attribute name="title" >
+        <string>Spectrogram</string>
+       </attribute>
+       <layout class="QHBoxLayout" name="horizontalLayout_3" >
+        <item>
+         <widget class="QGroupBox" name="groupBox" >
+          <property name="title" >
+           <string>Spectrogram Properties</string>
+          </property>
+          <layout class="QFormLayout" name="formLayout_3" >
+           <item row="1" column="0" >
+            <widget class="QLabel" name="specFFTLabel" >
+             <property name="text" >
+              <string>FFT Size</string>
+             </property>
+            </widget>
+           </item>
+           <item row="1" column="1" >
+            <widget class="QComboBox" name="specFFTComboBox" >
+             <property name="minimumSize" >
+              <size>
+               <width>96</width>
+               <height>0</height>
+              </size>
+             </property>
+             <property name="maximumSize" >
+              <size>
+               <width>96</width>
+               <height>16777215</height>
+              </size>
+             </property>
+            </widget>
+           </item>
+          </layout>
+          <zorder>specFFTLabel</zorder>
+          <zorder>specFFTComboBox</zorder>
+          <zorder>specFFTComboBox</zorder>
          </widget>
         </item>
         <item>
-         <widget class="QwtPlot" name="freqPlot"/>
+         <widget class="QwtPlot" name="specPlot" />
         </item>
        </layout>
+       <zorder>specPlot</zorder>
+       <zorder>groupBox</zorder>
       </widget>
      </widget>
     </item>
-    <item row="3" column="0">
-     <widget class="QGroupBox" name="filePosBox">
-      <property name="minimumSize">
+    <item row="3" column="0" >
+     <widget class="QGroupBox" name="filePosBox" >
+      <property name="minimumSize" >
        <size>
         <width>0</width>
         <height>120</height>
        </size>
       </property>
-      <property name="title">
+      <property name="title" >
        <string>File Position</string>
       </property>
-      <widget class="QWidget" name="formLayoutWidget_2">
-       <property name="geometry">
+      <widget class="QWidget" name="formLayoutWidget_2" >
+       <property name="geometry" >
         <rect>
          <x>0</x>
          <y>20</y>
          <height>92</height>
         </rect>
        </property>
-       <layout class="QFormLayout" name="filePosLayout">
-        <item row="0" column="0">
-         <widget class="QLabel" name="filePosStartLabel">
-          <property name="text">
+       <layout class="QFormLayout" name="filePosLayout" >
+        <item row="0" column="0" >
+         <widget class="QLabel" name="filePosStartLabel" >
+          <property name="text" >
            <string>Start</string>
           </property>
          </widget>
         </item>
-        <item row="0" column="1">
-         <widget class="QLineEdit" name="filePosStartLineEdit"/>
+        <item row="0" column="1" >
+         <widget class="QLineEdit" name="filePosStartLineEdit" />
         </item>
-        <item row="1" column="0">
-         <widget class="QLabel" name="filePosStopLabel">
-          <property name="text">
+        <item row="1" column="0" >
+         <widget class="QLabel" name="filePosStopLabel" >
+          <property name="text" >
            <string>Stop</string>
           </property>
          </widget>
         </item>
-        <item row="1" column="1">
-         <widget class="QLineEdit" name="filePosStopLineEdit"/>
+        <item row="1" column="1" >
+         <widget class="QLineEdit" name="filePosStopLineEdit" />
         </item>
-        <item row="2" column="0">
-         <widget class="QLabel" name="filePosLengthLabel">
-          <property name="text">
+        <item row="2" column="0" >
+         <widget class="QLabel" name="filePosLengthLabel" >
+          <property name="text" >
            <string>Length</string>
           </property>
          </widget>
         </item>
-        <item row="2" column="1">
-         <widget class="QLineEdit" name="filePosLengthLineEdit"/>
+        <item row="2" column="1" >
+         <widget class="QLineEdit" name="filePosLengthLineEdit" />
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="formLayoutWidget_4">
-       <property name="geometry">
+      <widget class="QWidget" name="formLayoutWidget_4" >
+       <property name="geometry" >
         <rect>
          <x>180</x>
          <y>20</y>
          <height>92</height>
         </rect>
        </property>
-       <layout class="QFormLayout" name="fileTimeLayout">
-        <item row="0" column="0">
-         <widget class="QLabel" name="fileTimeStartLabel">
-          <property name="text">
+       <layout class="QFormLayout" name="fileTimeLayout" >
+        <item row="0" column="0" >
+         <widget class="QLabel" name="fileTimeStartLabel" >
+          <property name="text" >
            <string>time start (sec)</string>
           </property>
          </widget>
         </item>
-        <item row="0" column="1">
-         <widget class="QLineEdit" name="fileTimeStartLineEdit"/>
+        <item row="0" column="1" >
+         <widget class="QLineEdit" name="fileTimeStartLineEdit" />
         </item>
-        <item row="1" column="0">
-         <widget class="QLabel" name="fileTimeStopLabel">
-          <property name="text">
+        <item row="1" column="0" >
+         <widget class="QLabel" name="fileTimeStopLabel" >
+          <property name="text" >
            <string>time stop (sec)</string>
           </property>
          </widget>
         </item>
-        <item row="1" column="1">
-         <widget class="QLineEdit" name="fileTimeStopLineEdit"/>
+        <item row="1" column="1" >
+         <widget class="QLineEdit" name="fileTimeStopLineEdit" />
         </item>
-        <item row="2" column="0">
-         <widget class="QLabel" name="fileTimeLengthLabel">
-          <property name="text">
+        <item row="2" column="0" >
+         <widget class="QLabel" name="fileTimeLengthLabel" >
+          <property name="text" >
            <string>time length (sec)</string>
           </property>
          </widget>
         </item>
-        <item row="2" column="1">
-         <widget class="QLineEdit" name="fileTimeLengthLineEdit"/>
+        <item row="2" column="1" >
+         <widget class="QLineEdit" name="fileTimeLengthLineEdit" />
         </item>
        </layout>
       </widget>
-      <widget class="QGroupBox" name="sysGroupBox">
-       <property name="geometry">
+      <widget class="QGroupBox" name="sysGroupBox" >
+       <property name="geometry" >
         <rect>
          <x>530</x>
          <y>0</y>
          <height>120</height>
         </rect>
        </property>
-       <property name="minimumSize">
+       <property name="minimumSize" >
         <size>
          <width>200</width>
          <height>0</height>
         </size>
        </property>
-       <property name="title">
+       <property name="title" >
         <string>System Properties</string>
        </property>
-       <widget class="QWidget" name="formLayoutWidget_3">
-        <property name="geometry">
+       <widget class="QWidget" name="formLayoutWidget_3" >
+        <property name="geometry" >
          <rect>
           <x>0</x>
           <y>20</y>
           <height>91</height>
          </rect>
         </property>
-        <layout class="QFormLayout" name="formLayout_2">
-         <item row="0" column="0">
-          <widget class="QLabel" name="sampleRateLabel">
-           <property name="text">
+        <layout class="QFormLayout" name="formLayout_2" >
+         <item row="0" column="0" >
+          <widget class="QLabel" name="sampleRateLabel" >
+           <property name="text" >
             <string>Sample Rate</string>
            </property>
           </widget>
          </item>
-         <item row="0" column="1">
-          <widget class="QLineEdit" name="sampleRateLineEdit">
-           <property name="minimumSize">
+         <item row="0" column="1" >
+          <widget class="QLineEdit" name="sampleRateLineEdit" >
+           <property name="minimumSize" >
             <size>
              <width>0</width>
              <height>0</height>
         </layout>
        </widget>
       </widget>
-      <widget class="QGroupBox" name="displayGroupBox">
-       <property name="geometry">
+      <widget class="QGroupBox" name="displayGroupBox" >
+       <property name="geometry" >
         <rect>
          <x>730</x>
          <y>0</y>
          <height>120</height>
         </rect>
        </property>
-       <property name="minimumSize">
+       <property name="minimumSize" >
         <size>
          <width>170</width>
          <height>0</height>
         </size>
        </property>
-       <property name="title">
+       <property name="title" >
         <string>Display Properties</string>
        </property>
-       <widget class="QWidget" name="verticalLayoutWidget">
-        <property name="geometry">
+       <widget class="QWidget" name="verticalLayoutWidget" >
+        <property name="geometry" >
          <rect>
           <x>0</x>
           <y>20</y>
           <height>91</height>
          </rect>
         </property>
-        <layout class="QVBoxLayout" name="verticalLayout">
+        <layout class="QVBoxLayout" name="verticalLayout" >
          <item>
-          <widget class="QComboBox" name="colorComboBox"/>
+          <widget class="QComboBox" name="colorComboBox" />
          </item>
          <item>
-          <spacer name="verticalSpacer">
-           <property name="orientation">
+          <spacer name="verticalSpacer" >
+           <property name="orientation" >
             <enum>Qt::Vertical</enum>
            </property>
-           <property name="sizeHint" stdset="0">
+           <property name="sizeHint" stdset="0" >
             <size>
              <width>20</width>
              <height>40</height>
     </item>
    </layout>
   </widget>
-  <widget class="QMenuBar" name="menubar">
-   <property name="geometry">
+  <widget class="QMenuBar" name="menubar" >
+   <property name="geometry" >
     <rect>
      <x>0</x>
      <y>0</y>
      <width>927</width>
-     <height>25</height>
+     <height>24</height>
     </rect>
    </property>
-   <widget class="QMenu" name="menu_File">
-    <property name="title">
+   <widget class="QMenu" name="menu_File" >
+    <property name="title" >
      <string>&amp;File</string>
     </property>
-    <addaction name="action_open"/>
-    <addaction name="action_exit"/>
+    <addaction name="action_open" />
+    <addaction name="action_exit" />
    </widget>
-   <addaction name="menu_File"/>
+   <addaction name="menu_File" />
   </widget>
-  <widget class="QStatusBar" name="statusbar"/>
-  <action name="action_open">
-   <property name="text">
+  <widget class="QStatusBar" name="statusbar" />
+  <action name="action_open" >
+   <property name="text" >
     <string>&amp;Open</string>
    </property>
-   <property name="shortcut">
+   <property name="shortcut" >
     <string>Ctrl+O</string>
    </property>
   </action>
-  <action name="action_exit">
-   <property name="text">
+  <action name="action_exit" >
+   <property name="text" >
     <string>E&amp;xit</string>
    </property>
   </action>
    <receiver>MainWindow</receiver>
    <slot>close()</slot>
    <hints>
-    <hint type="sourcelabel">
+    <hint type="sourcelabel" >
      <x>-1</x>
      <y>-1</y>
     </hint>
-    <hint type="destinationlabel">
+    <hint type="destinationlabel" >
      <x>399</x>
      <y>347</y>
     </hint>