def __init__(self, stateSpace): super(TrajectoryViewer, self).__init__() self.stateSpace = stateSpace # Define colors for plotting self.colors = itertools.cycle(['g', 'b', 'c', 'm', 'k', 'y']) self.plotLines = deque() # Combo Boxes for selecting displaced state space dimensions self.comboBox1 = QtGui.QComboBox(self) self.comboBox1.addItems(sorted(stateSpace.keys())) self.comboBox2 = QtGui.QComboBox(self) self.comboBox2.addItems(sorted(stateSpace.keys())) self.comboBox2.setCurrentIndex(1) self.dimension1 = sorted(self.stateSpace.keys())[0] self.dimension2 = sorted(self.stateSpace.keys())[1] self.connect(self.comboBox1, QtCore.SIGNAL('currentIndexChanged (int)'), self._dimension1Changed) self.connect(self.comboBox2, QtCore.SIGNAL('currentIndexChanged (int)'), self._dimension2Changed) # Slider for controlling the number of Trajectories self.maxLines = 5 self.numberTrajectoriesSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.numberTrajectoriesSlider.setValue(self.maxLines) self.numberTrajectoriesSlider.setMinimum(1) self.numberTrajectoriesSlider.setMaximum(20) self.numberTrajectoriesSlider.setTickInterval(5) self.numberTrajectoriesSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.numberTrajectoriesSlider, QtCore.SIGNAL('sliderReleased()'), self._changeNumTrajectories) # Checkbox for dis-/enabling trajectory plotting self.plottingEnabled = True self.enabledCheckBox = QtGui.QCheckBox("Plotting Enabled") self.enabledCheckBox.setChecked(self.plottingEnabled) self.connect(self.enabledCheckBox, QtCore.SIGNAL('stateChanged(int)'), self._enablingPlotting) # Some labels self.dimension1Label = QtGui.QLabel("Dimension X Axis") self.dimension2Label = QtGui.QLabel("Dimension Y Axis") self.numTrajectoriesLabel = QtGui.QLabel("Trajectories shown") # Create matplotlib widgets plotWidgetTrajectory = QtGui.QWidget(self) plotWidgetTrajectory.setMinimumSize(800, 500) self.figTrajectory = Figure((8.0, 5.0), dpi=100) self.axisTrajectory = self.figTrajectory .gca() self.canvasTrajectory = FigureCanvas(self.figTrajectory) self.canvasTrajectory .setParent(plotWidgetTrajectory ) # Initialize plotting self._reinitializePlot() # Create layout self.vlayout = QtGui.QVBoxLayout() self.hlayout1 = QtGui.QHBoxLayout() self.hlayout1.addWidget(self.dimension1Label) self.hlayout1.addWidget(self.comboBox1) self.hlayout2 = QtGui.QHBoxLayout() self.hlayout2.addWidget(self.dimension2Label) self.hlayout2.addWidget(self.comboBox2) self.hlayout3 = QtGui.QHBoxLayout() self.hlayout3.addWidget(self.numTrajectoriesLabel) self.hlayout3.addWidget(self.numberTrajectoriesSlider) self.vlayout.addLayout(self.hlayout1) self.vlayout.addLayout(self.hlayout2) self.vlayout.addLayout(self.hlayout3) self.vlayout.addWidget(self.enabledCheckBox) self.hlayout = QtGui.QHBoxLayout() self.hlayout.addWidget(plotWidgetTrajectory) self.hlayout.addLayout(self.vlayout) self.setLayout(self.hlayout) # Connect to trajectory observable self.trajectoryObservable = \ OBSERVABLES.getAllObservablesOfType(TrajectoryObservable)[0] self.trajectoryObservableCallback = \ lambda *transition: self.addTransition(*transition) self.trajectoryObservable.addObserver(self.trajectoryObservableCallback)
def __init__(self, stateSpace): super(MountainCarPolicyViewer, self).__init__() self.stateSpace = stateSpace self.actions = [] self.colors = ['r','g','b', 'c', 'y'] self.lock = threading.Lock() # Add a combobox for selecting the policy observable self.policyObservableLabel = QtGui.QLabel("Policy Observable") self.policyObservableComboBox = QtGui.QComboBox(self) policyObservables = \ OBSERVABLES.getAllObservablesOfType(FunctionOverStateSpaceObservable) self.policyObservableComboBox.addItems([policyObservable.title for policyObservable in policyObservables]) self.selectedPolicyObservable = None if len(policyObservables) > 0: self.selectedPolicyObservable = policyObservables[0].title self.connect(self.policyObservableComboBox, QtCore.SIGNAL('activated (const QString&)'), self._policyObservableChanged) # Automatically update policy observable combobox when new observables # are created during runtime def updatePolicyObservableBox(viewer, action): self.policyObservableComboBox.clear() policyObservables = OBSERVABLES.getAllObservablesOfType(FunctionOverStateSpaceObservable) self.policyObservableComboBox.addItems([policyObservable.title for policyObservable in policyObservables]) if len(policyObservables) > 0: self.selectedPolicyObservable = policyObservables[0].title else: self.selectedPolicyObservable = None OBSERVABLES.addObserver(updatePolicyObservableBox) # Get trajectory observable which is required for informing about end of episode self.trajectoryObservable = \ OBSERVABLES.getAllObservablesOfType(TrajectoryObservable)[0] self.episodeTerminated = False # Slider that controls the granularity of the plot-grid self.gridNodesPerDim = 25 self.gridNodesSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.gridNodesSlider.setValue(self.gridNodesPerDim) self.gridNodesSlider.setMinimum(0) self.gridNodesSlider.setMaximum(100) self.gridNodesSlider.setTickInterval(10) self.gridNodesSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.gridNodesSlider, QtCore.SIGNAL('sliderReleased()'), self._changeGridNodes) self.gridNodesLabel = QtGui.QLabel("Grid Nodes Per Dimension: %s" % self.gridNodesPerDim ) # Create matplotlib widgets plotWidget = QtGui.QWidget(self) plotWidget.setMinimumSize(600, 500) plotWidget.setWindowTitle("Policy") self.fig = Figure((6.0, 5.0), dpi=100) self.axis = self.fig.gca() self.canvas = FigureCanvas(self.fig) self.canvas.setParent(plotWidget) # Small text in plot legend matplotlib.rcParams.update({'legend.fontsize': 6}) self.hlayout = QtGui.QHBoxLayout() self.hlayout.addWidget(plotWidget) self.vlayout = QtGui.QVBoxLayout() self.vlayout.addWidget(self.policyObservableLabel) self.vlayout.addWidget(self.policyObservableComboBox) self.vlayout.addWidget(self.gridNodesLabel) self.vlayout.addWidget(self.gridNodesSlider) self.hlayout.addLayout(self.vlayout) self.setLayout(self.hlayout) # Connect to observer (has to be the last thing!!) self.trajectoryObservableCallback = \ lambda *transition: self.updateSamples(*transition) self.trajectoryObservable.addObserver(self.trajectoryObservableCallback) self.policyObservable = None if self.selectedPolicyObservable: self.policyObservable = OBSERVABLES.getObservable(self.selectedPolicyObservable, FunctionOverStateSpaceObservable) self.policyObservableCallback = \ lambda policyEvalFunction: self.updatePolicy(policyEvalFunction) self.policyObservable.addObserver(self.policyObservableCallback)
def __init__(self, tableModel, parent): super(PlotExperimentWindow, self).__init__(parent) self.tableModel = tableModel # Colors used for different configurations in plots self.colors = cycle(["b", "g", "r", "c", "m", "y", "k"]) self.colorMapping = defaultdict(lambda : self.colors.next()) # The length of the moving window average self.mwaSize = 2**0 # Whether we plot each run separately or only their mean self.linePlotTypes = ["Each Run", "Average"] self.linePlot = self.linePlotTypes[0] # The central widget self.centralWidget = QtGui.QWidget(self) # Create matplotlib widget self.plotWidget = QtGui.QWidget(self.centralWidget) self.plotWidget.setMinimumSize(800, 500) self.fig = Figure((8.0, 5.0), dpi=100) self.canvas = FigureCanvas(self.fig) self.canvas.setParent(self.plotWidget) self.axis = self.fig.gca() self.mplToolbar = NavigationToolbar(self.canvas, self.centralWidget) self.mwaLabel = QtGui.QLabel("Moving Window Average: %s" % self.mwaSize) # Slider for controlling the moving average window self.mwaSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.mwaSlider.setValue(0) self.mwaSlider.setMinimum(0) self.mwaSlider.setMaximum(10) self.mwaSlider.setTickInterval(10) self.mwaSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.mwaSlider, QtCore.SIGNAL('sliderReleased()'), self._changeMWA) self.lineLabel = QtGui.QLabel("Plot of agent: ") # Combo Box for selecting the observable self.lineComboBox = QtGui.QComboBox(self) self.lineComboBox.addItems(["Each Run", "Average"]) self.connect(self.lineComboBox, QtCore.SIGNAL('currentIndexChanged (int)'), self._linePlotChanged) # Add a button for replotting self.replotButton = QtGui.QPushButton("Update") self.connect(self.replotButton, QtCore.SIGNAL('clicked()'), self._plot) # Add a button for saving a plot self.saveButton = QtGui.QPushButton("Save") self.connect(self.saveButton, QtCore.SIGNAL('clicked()'), self._save) # Set layout self.topLinelayout = QtGui.QHBoxLayout() self.topLinelayout.addWidget(self.mwaLabel) self.topLinelayout.addWidget(self.mwaSlider) self.topLinelayout.addWidget(self.lineLabel) self.topLinelayout.addWidget(self.lineComboBox) self.topLinelayout.addWidget(self.replotButton) self.topLinelayout.addWidget(self.saveButton) self.vlayout = QtGui.QVBoxLayout() self.vlayout.addLayout(self.topLinelayout) self.vlayout.addWidget(self.plotWidget) self.vlayout.addWidget(self.mplToolbar) self.centralWidget.setLayout(self.vlayout) self.setCentralWidget(self.centralWidget) self.setWindowTitle("Current experiment's results") # Plot the results once upon creation self._plot()
def __init__(self, maze, stateSpace): super(Maze2DFunctionViewer, self).__init__() self.maze = maze self.stateSpace = stateSpace self.updateCounter = 0 self.updatePlotNow = False self.evalFunction = None self.lock = threading.Lock() # Create matplotlib widgets plotWidget = QtGui.QWidget(self) plotWidget.setMinimumSize(600, 500) plotWidget.setWindowTitle("Maze2D") self.fig = Figure((6.0, 5.0), dpi=100) self.axis = self.fig.gca() self.axis.clear() self.maze.drawIntoAxis(self.axis) self.canvas = FigureCanvas(self.fig) self.canvas.setParent(plotWidget) self.canvas.draw() self.plottedPatches = [] # Add a combobox for selecting the function over state space that is observed self.selectedFunctionObservable = None self.functionObservableLabel = QtGui.QLabel( "Function over State Space") self.functionObservableComboBox = QtGui.QComboBox(self) functionObservables = OBSERVABLES.getAllObservablesOfType( FunctionOverStateSpaceObservable) stateActionValueObservables = \ OBSERVABLES.getAllObservablesOfType(StateActionValuesObservable) functionObservables.extend(stateActionValueObservables) self.functionObservableComboBox.addItems([ functionObservable.title for functionObservable in functionObservables ]) if len(functionObservables) > 0: self.selectedFunctionObservable = functionObservables[0].title self.connect(self.functionObservableComboBox, QtCore.SIGNAL('activated (const QString&)'), self._functionObservableChanged) # Automatically update funtion observable combobox when new observables # are created during runtime def updateFunctionObservableBox(viewer, action): self.functionObservableComboBox.clear() functionObservables = \ OBSERVABLES.getAllObservablesOfType(FunctionOverStateSpaceObservable) stateActionValueObservables = \ OBSERVABLES.getAllObservablesOfType(StateActionValuesObservable) functionObservables.extend(stateActionValueObservables) self.functionObservableComboBox.addItems([ functionObservable.title for functionObservable in functionObservables ]) if self.selectedFunctionObservable is None \ and len(functionObservables) > 0: self.selectedFunctionObservable = functionObservables[0].title else: # Let combobox still show the selected observable index = self.functionObservableComboBox.findText( self.selectedFunctionObservable) if index != -1: self.functionObservableComboBox.setCurrentIndex(index) OBSERVABLES.addObserver(updateFunctionObservableBox) # Add a combobox for for selecting the suboption that is used when # a StateActionValuesObservable is observed self.selectedSuboption = None self.suboptionLabel = QtGui.QLabel("Suboption") self.suboptionComboBox = QtGui.QComboBox(self) # Slider that controls the frequency of update the plot self.updateFrequency = 0.0 self.updateFrequencySlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.updateFrequencySlider.setValue(int(self.updateFrequency * 100)) self.updateFrequencySlider.setMinimum(0) self.updateFrequencySlider.setMaximum(100) self.updateFrequencySlider.setTickInterval(0.1) self.updateFrequencySlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.updateFrequencySlider, QtCore.SIGNAL('sliderReleased()'), self._changeUpdateFrequency) self.updateFrequencyLabel = QtGui.QLabel("UpdateFrequency: %s" % self.updateFrequency) # Button to enforce update of plot self.updatePlotButton = QtGui.QPushButton("Update Plot") self.connect(self.updatePlotButton, QtCore.SIGNAL('clicked()'), self._updatePlot) # Legend of plot self.legendLabel = QtGui.QLabel("Legend:") self.legendWidget = QtGui.QListWidget(self) self.hlayout = QtGui.QHBoxLayout() self.hlayout.addWidget(plotWidget) self.vlayout = QtGui.QVBoxLayout() self.functionObservableLayout = QtGui.QHBoxLayout() self.functionObservableLayout.addWidget(self.functionObservableLabel) self.functionObservableLayout.addWidget( self.functionObservableComboBox) self.vlayout.addLayout(self.functionObservableLayout) self.suboptionLayout = QtGui.QHBoxLayout() self.suboptionLayout.addWidget(self.suboptionLabel) self.suboptionLayout.addWidget(self.suboptionComboBox) self.vlayout.addLayout(self.suboptionLayout) self.updateFrequencyLayout = QtGui.QHBoxLayout() self.updateFrequencyLayout.addWidget(self.updateFrequencyLabel) self.updateFrequencyLayout.addWidget(self.updateFrequencySlider) self.vlayout.addLayout(self.updateFrequencyLayout) self.vlayout.addWidget(self.updatePlotButton) self.vlayout.addWidget(self.legendLabel) self.vlayout.addWidget(self.legendWidget) self.hlayout.addLayout(self.vlayout) self.setLayout(self.hlayout) # Connect to observer (has to be the last thing!!) self.functionObservable = None if self.selectedFunctionObservable is not None: self._functionObservableChanged(self.selectedFunctionObservable)
def __init__(self, pinballMazeEnv, stateSpace): super(PinballMazeFunctionViewer, self).__init__() self.pinballMazeEnv = pinballMazeEnv self.stateSpace = stateSpace self.actions = [] self.updateCounter = 0 self.updatePlotNow = False self.evalFunction = None self.lock = threading.Lock() # Create matplotlib widgets plotWidget = QtGui.QWidget(self) plotWidget.setMinimumSize(600, 500) plotWidget.setWindowTitle("Pinball Maze") self.fig = Figure((6.0, 5.0), dpi=100) self.axis = self.fig.gca() self.pinballMazeEnv.plotStateSpaceStructure(self.axis) self.canvas = FigureCanvas(self.fig) self.canvas.setParent(plotWidget) self.canvas.draw() self.plottedPatches = [] # Add a combobox for selecting the function over state space that is observed self.selectedFunctionObservable = None self.functionObservableLabel = QtGui.QLabel( "Function over State Space") self.functionObservableComboBox = QtGui.QComboBox(self) functionObservables = OBSERVABLES.getAllObservablesOfType( FunctionOverStateSpaceObservable) self.functionObservableComboBox.addItems([ functionObservable.title for functionObservable in functionObservables ]) if len(functionObservables) > 0: self.selectedFunctionObservable = functionObservables[0].title self.connect(self.functionObservableComboBox, QtCore.SIGNAL('activated (const QString&)'), self._functionObservableChanged) # Automatically update funtion observable combobox when new observables # are created during runtime def updateFunctionObservableBox(viewer, action): self.functionObservableComboBox.clear() functionObservables = \ OBSERVABLES.getAllObservablesOfType(FunctionOverStateSpaceObservable) self.functionObservableComboBox.addItems([ functionObservable.title for functionObservable in functionObservables ]) if len(functionObservables) > 0: self.selectedFunctionObservable = functionObservables[0].title OBSERVABLES.addObserver(updateFunctionObservableBox) # Slider that controls the granularity of the plot-grid self.gridNodesPerDim = 50 self.gridNodesSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.gridNodesSlider.setValue(self.gridNodesPerDim) self.gridNodesSlider.setMinimum(0) self.gridNodesSlider.setMaximum(100) self.gridNodesSlider.setTickInterval(10) self.gridNodesSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.gridNodesSlider, QtCore.SIGNAL('sliderReleased()'), self._changeGridNodes) self.gridNodesLabel = QtGui.QLabel("Grid Nodes Per Dimension: %s" % self.gridNodesPerDim) # Slider that controls the frequency of update the plot self.updateFrequency = 0.0 self.updateFrequencySlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.updateFrequencySlider.setValue(int(self.updateFrequency * 100)) self.updateFrequencySlider.setMinimum(0) self.updateFrequencySlider.setMaximum(100) self.updateFrequencySlider.setTickInterval(0.1) self.updateFrequencySlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.updateFrequencySlider, QtCore.SIGNAL('sliderReleased()'), self._changeUpdateFrequency) self.updateFrequencyLabel = QtGui.QLabel("UpdateFrequency: %s" % self.updateFrequency) # Button to enforce update of plot self.updatePlotButton = QtGui.QPushButton("Update Plot") self.connect(self.updatePlotButton, QtCore.SIGNAL('clicked()'), self._updatePlot) # Chosen xvel and yvel values self.xVel = 0.5 self.xVelSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.xVelSlider.setValue(int(self.xVel * 10)) self.xVelSlider.setMinimum(0) self.xVelSlider.setMaximum(10) self.xVelSlider.setTickInterval(1) self.xVelSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.xVelSlider, QtCore.SIGNAL('sliderReleased()'), self._changeXVel) self.xVelLabel = QtGui.QLabel("xvel value: %s" % self.xVel) self.yVel = 0.5 self.yVelSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.yVelSlider.setValue(int(self.yVel * 10)) self.yVelSlider.setMinimum(0) self.yVelSlider.setMaximum(10) self.yVelSlider.setTickInterval(1) self.yVelSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.yVelSlider, QtCore.SIGNAL('sliderReleased()'), self._changeYVel) self.yVelLabel = QtGui.QLabel("yvel value: %s" % self.xVel) # Legend of plot self.legendLabel = QtGui.QLabel("Legend:") self.legendWidget = QtGui.QListWidget(self) self.hlayout = QtGui.QHBoxLayout() self.hlayout.addWidget(plotWidget) self.vlayout = QtGui.QVBoxLayout() self.functionObservableLayout = QtGui.QHBoxLayout() self.functionObservableLayout.addWidget(self.functionObservableLabel) self.functionObservableLayout.addWidget( self.functionObservableComboBox) self.vlayout.addLayout(self.functionObservableLayout) self.gridNodesLayout = QtGui.QHBoxLayout() self.gridNodesLayout.addWidget(self.gridNodesLabel) self.gridNodesLayout.addWidget(self.gridNodesSlider) self.vlayout.addLayout(self.gridNodesLayout) self.updateFrequencyLayout = QtGui.QHBoxLayout() self.updateFrequencyLayout.addWidget(self.updateFrequencyLabel) self.updateFrequencyLayout.addWidget(self.updateFrequencySlider) self.vlayout.addLayout(self.updateFrequencyLayout) self.vlayout.addWidget(self.updatePlotButton) self.xVelLayout = QtGui.QHBoxLayout() self.xVelLayout.addWidget(self.xVelLabel) self.xVelLayout.addWidget(self.xVelSlider) self.vlayout.addLayout(self.xVelLayout) self.yVelLayout = QtGui.QHBoxLayout() self.yVelLayout.addWidget(self.yVelLabel) self.yVelLayout.addWidget(self.yVelSlider) self.vlayout.addLayout(self.yVelLayout) self.vlayout.addWidget(self.legendLabel) self.vlayout.addWidget(self.legendWidget) self.hlayout.addLayout(self.vlayout) self.setLayout(self.hlayout) # Connect to observer (has to be the last thing!!) self.functionObservable = None if self.selectedFunctionObservable: self.functionObservable = \ OBSERVABLES.getObservable(self.selectedFunctionObservable, FunctionOverStateSpaceObservable) self.functionObservableCallback = \ lambda evalFunction: self._updateFunction(evalFunction) self.functionObservable.addObserver( self.functionObservableCallback)
def __init__(self): super(FloatStreamViewer, self).__init__() # Create matplotlib widget plotWidget = QtGui.QWidget(self) plotWidget.setMinimumSize(800, 500) fig = Figure((8.0, 5.0), dpi=100) self.canvas = FigureCanvas(fig) self.canvas.setParent(plotWidget) self.axis = fig.gca() # Local container for displayed values self.values = deque() self.times = deque() # Combo Box for selecting the observable self.comboBox = QtGui.QComboBox(self) self.floatStreamObservables = \ OBSERVABLES.getAllObservablesOfType(FloatStreamObservable) self.comboBox.addItems( map(lambda x: "%s" % x.title, self.floatStreamObservables)) self.connect(self.comboBox, QtCore.SIGNAL('currentIndexChanged (int)'), self._observableChanged) # Automatically update combobox when new float stream observables # are created during runtime def updateComboBox(observable, action): self.comboBox.clear() self.floatStreamObservables = \ OBSERVABLES.getAllObservablesOfType(FloatStreamObservable) self.comboBox.addItems( map(lambda x: "%s" % x.title, self.floatStreamObservables)) OBSERVABLES.addObserver(updateComboBox) # The number of values from the observable that are remembered self.windowSize = 64 # Slider for controlling the window size self.windowSizeSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.windowSizeSlider.setValue(numpy.log2(self.windowSize)) self.windowSizeSlider.setMinimum(0) self.windowSizeSlider.setMaximum(15) self.windowSizeSlider.setTickInterval(1) self.windowSizeSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.windowSizeSlider, QtCore.SIGNAL('sliderReleased()'), self._changeWindowSize) self.windowSizeLabel = QtGui.QLabel("WindowSize: %s" % self.windowSize) # The length of the moving window average self.mwaSize = 10 # Slider for controlling the moving average window self.mwaSlider = QtGui.QSlider(QtCore.Qt.Horizontal, self) self.mwaSlider.setValue(self.mwaSize) self.mwaSlider.setMinimum(1) self.mwaSlider.setMaximum(50) self.mwaSlider.setTickInterval(10) self.mwaSlider.setTickPosition(QtGui.QSlider.TicksBelow) self.connect(self.mwaSlider, QtCore.SIGNAL('sliderReleased()'), self._changeMWA) self.mwaLabel = QtGui.QLabel("Moving Window Average : %s" % self.mwaSize) # Create layout self.vlayout = QtGui.QVBoxLayout() self.vlayout.addWidget(self.comboBox) self.vlayout.addWidget(self.windowSizeSlider) self.vlayout.addWidget(self.windowSizeLabel) self.vlayout.addWidget(self.mwaSlider) self.vlayout.addWidget(self.mwaLabel) self.hlayout = QtGui.QHBoxLayout() self.hlayout.addWidget(plotWidget) self.hlayout.addLayout(self.vlayout) self.setLayout(self.hlayout) # Handling connecting to observable self.observableCallback = lambda time, value, *args: self.update( time, value) if len(self.floatStreamObservables) > 0: # Show per default the first observable self.observable = self.floatStreamObservables[0] # Connect to observer (has to be the last thing!!) self.observable.addObserver(self.observableCallback) else: self.observable = None