def __init__(self):
QFrame.__init__(self)
self.d_curves = [None] * CurvCnt
xMap.setScaleInterval(-0.5, 10.5)
yMap.setScaleInterval(-1.1, 1.1)
# Frame style FIXME This doesn't seem to work properly
self.setFrameStyle(QFrame.Box | QFrame.Raised)
self.setLineWidth(2)
self.setMidLineWidth(3)
# Calculate values
for i in range(Size):
xval[i] = i * 10.0 / (Size - 1.0)
yval[i] = math.sin(xval[i]) * math.cos(2.0 * xval[i])
# define curve styles
i = 0
self.d_curves[i] = Qwt.QwtPlotCurve()
self.d_curves[i].setSymbol(
Qwt.QwtSymbol(Qwt.QwtSymbol.Cross, QBrush(Qt.NoBrush),
QPen(Qt.black), QSize(5, 5)))
self.d_curves[i].setPen(Qt.darkGreen)
self.d_curves[i].setStyle(Qwt.QwtPlotCurve.Lines)
self.d_curves[i].setCurveAttribute(Qwt.QwtPlotCurve.Fitted)
i += 1
self.d_curves[i] = Qwt.QwtPlotCurve()
self.d_curves[i].setSymbol(
Qwt.QwtSymbol(Qwt.QwtSymbol.Ellipse, Qt.yellow, QPen(Qt.blue),
QSize(5, 5)))
self.d_curves[i].setPen(Qt.red)
self.d_curves[i].setStyle(Qwt.QwtPlotCurve.Sticks)
i += 1
self.d_curves[i] = Qwt.QwtPlotCurve()
self.d_curves[i].setPen(Qt.darkBlue)
self.d_curves[i].setStyle(Qwt.QwtPlotCurve.Lines)
i += 1
self.d_curves[i] = Qwt.QwtPlotCurve()
self.d_curves[i].setPen(Qt.darkBlue)
self.d_curves[i].setStyle(Qwt.QwtPlotCurve.Lines)
self.d_curves[i].setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
i += 1
self.d_curves[i] = Qwt.QwtPlotCurve()
self.d_curves[i].setPen(Qt.darkCyan)
self.d_curves[i].setStyle(Qwt.QwtPlotCurve.Steps)
i += 1
self.d_curves[i] = Qwt.QwtPlotCurve()
self.d_curves[i].setSymbol(
Qwt.QwtSymbol(Qwt.QwtSymbol.XCross, QBrush(Qt.NoBrush),
QPen(Qt.darkMagenta), QSize(5, 5)))
self.d_curves[i].setStyle(Qwt.QwtPlotCurve.NoCurve)
# attach data
for i in range(CurvCnt):
self.d_curves[i].setSamples(xval, yval)
def update(self, layer, style):
"""Update plot for given Safecast layer.
:param layer: Safecast layer
"""
# collect plot coordinates
x, y = layer.plotData()
# clear plot first & detach curve
if hasQwt6:
items = Qwt.QwtPlotItem.Rtti_PlotItem
else:
items = [Qwt.QwtPlotItem.Rtti_PlotItem]
self.detachItems(items, True)
# attach a curve
self.curve = Qwt.QwtPlotCurve('ader_microSvh')
self.curve.attach(self)
if style == 0: # lines
self.curve.setPen(Qt.QPen(Qt.Qt.blue, 0))
else: # points
self.curve.setStyle(Qwt.QwtPlotCurve.NoCurve)
self.curve.setSymbol(
Qwt.QwtSymbol(Qwt.QwtSymbol.Ellipse, Qt.QBrush(Qt.Qt.blue),
Qt.QPen(Qt.Qt.blue), Qt.QSize(5, 5)))
self.curve.setSamples(x, y)
self.replot()
def __init__(self, parent=None):
Qwt.QwtPlot.__init__(self, parent)
self.setAutoReplot(False)
self.setTitle("Frequency Response of a Second-Order System")
canvas = Qwt.QwtPlotCanvas()
canvas.setBorderRadius(10)
self.setCanvas(canvas)
self.setCanvasBackground(QColor("MidnightBlue"))
# legend
legend = Qwt.QwtLegend()
self.insertLegend(legend, Qwt.QwtPlot.BottomLegend)
# grid
grid = Qwt.QwtPlotGrid()
grid.enableXMin(True)
grid.setMajorPen(Qt.white, 0, Qt.DotLine)
grid.setMinorPen(Qt.gray, 0, Qt.DotLine)
grid.attach(self)
# axes
self.enableAxis(Qwt.QwtPlot.yRight)
self.setAxisTitle(Qwt.QwtPlot.xBottom, "Normalized Frequency")
self.setAxisTitle(Qwt.QwtPlot.yLeft, "Amplitude [dB]")
self.setAxisTitle(Qwt.QwtPlot.yRight, "Phase [deg]")
self.setAxisMaxMajor(Qwt.QwtPlot.xBottom, 6)
self.setAxisMaxMinor(Qwt.QwtPlot.xBottom, 9)
self.setAxisScaleEngine(Qwt.QwtPlot.xBottom, Qwt.QwtLogScaleEngine())
# curves
self.d_curve1 = Qwt.QwtPlotCurve("Amplitude")
self.d_curve1.setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
self.d_curve1.setPen(Qt.yellow)
self.d_curve1.setLegendAttribute(Qwt.QwtPlotCurve.LegendShowLine)
self.d_curve1.setYAxis(Qwt.QwtPlot.yLeft)
self.d_curve1.attach(self)
self.d_curve2 = Qwt.QwtPlotCurve("Phase")
self.d_curve2.setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
self.d_curve2.setPen(Qt.cyan)
self.d_curve2.setLegendAttribute(Qwt.QwtPlotCurve.LegendShowLine)
self.d_curve2.setYAxis(Qwt.QwtPlot.yRight)
self.d_curve2.attach(self)
# marker
self.d_marker1 = Qwt.QwtPlotMarker()
self.d_marker1.setValue(0.0, 0.0)
self.d_marker1.setLineStyle(Qwt.QwtPlotMarker.VLine)
self.d_marker1.setLabelAlignment(Qt.AlignRight | Qt.AlignBottom)
self.d_marker1.setLinePen(Qt.green, 0, Qt.DashDotLine)
self.d_marker1.attach(self)
self.d_marker2 = Qwt.QwtPlotMarker()
self.d_marker2.setLineStyle(Qwt.QwtPlotMarker.HLine)
self.d_marker2.setLabelAlignment(Qt.AlignRight | Qt.AlignBottom)
self.d_marker2.setLinePen(QColor(200, 150, 0), 0, Qt.DashDotLine)
self.d_marker2.setSymbol(
Qwt.QwtSymbol(Qwt.QwtSymbol.Diamond, QColor(Qt.yellow),
QColor(Qt.green), QSize(8, 8)))
self.d_marker2.attach(self)
self.setDamp(0)
self.setAutoReplot(True)
a = QApplication(sys.argv)
plot=Qwt.QwtPlot()
plot.setTitle("Plot Demo")
plot.setCanvasBackground(Qt.white)
plot.insertLegend( Qwt.QwtLegend() )
grid = Qwt.QwtPlotGrid()
grid.attach( plot )
curve = Qwt.QwtPlotCurve()
curve.setTitle("Some Points")
curve.setPen(Qt.blue,4)
curve.setRenderHint( Qwt.QwtPlotItem.RenderAntialiased, True );
symbol = Qwt.QwtSymbol( Qwt.QwtSymbol.Ellipse, QBrush( Qt.yellow ), QPen( Qt.red, 2 ), QSize( 8, 8 ) );
curve.setSymbol( symbol )
x=np.arange(0,10,0.1)
y=np.sin(x)
curve.setSamples(x,y)
curve.attach(plot)
zoomer = Qwt.QwtPlotZoomer( Qwt.QwtPlot.xBottom, Qwt.QwtPlot.yLeft, plot.canvas() );
zoomer.setZoomBase(False);
zoomer.zoom(0);
plot.resize(600,400)
plot.replot()
plot.show()
sys.exit(a.exec_())