def populate(self):
self.grid = Qwt.QwtPlotGrid()
self.grid.enableX( False )
self.grid.enableY( True )
self.grid.enableXMin( False )
self.grid.enableYMin( False )
self.grid.setMajorPen( Qt.black, 0, Qt.DotLine )
self.grid.attach( self )
juneValues = [ 7.0, 19.0, 24.0, 32.0, 10.0, 5.0, 3.0 ]
novemberValues = [ 4.0, 15.0, 22.0, 34.0, 13.0, 8.0, 4.0 ]
histogramJune = Histogram( "Summer", Qt.red )
histogramJune.setValues( juneValues )
histogramJune.attach( self )
histogramNovember = Histogram( "Winter", Qt.blue )
histogramNovember.setValues( novemberValues )
histogramNovember.attach( self )
#!/usr/bin/python
import sys
import math
#import Qwt
from PyQt4 import Qwt
from PyQt4.QtCore import Qt, QSize
from PyQt4.QtGui import QBrush, QPen, QApplication
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)
x = []
y = []
for i in range(101):
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)