def __init__(self, *args): QWidget.__init__(self, *args) layout = QGridLayout(self) # try to create a plot for SciPy arrays # make a curve and copy the data numpy_curve = QwtPlotCurve('y = lorentzian(x)') x = np.arange(0.0, 10.0, 0.01) y = lorentzian(x) numpy_curve.setData(x, y) # here, we know we can plot NumPy arrays numpy_plot = QwtPlot(self) numpy_plot.setTitle('numpy array') numpy_plot.setCanvasBackground(Qt.white) numpy_plot.plotLayout().setCanvasMargin(0) numpy_plot.plotLayout().setAlignCanvasToScales(True) # insert a curve and make it red numpy_curve.attach(numpy_plot) numpy_curve.setPen(QPen(Qt.red)) layout.addWidget(numpy_plot, 0, 0) numpy_plot.replot() # create a plot widget for lists of Python floats list_plot = QwtPlot(self) list_plot.setTitle('Python list') list_plot.setCanvasBackground(Qt.white) list_plot.plotLayout().setCanvasMargin(0) list_plot.plotLayout().setAlignCanvasToScales(True) x = drange(0.0, 10.0, 0.01) y = [lorentzian(item) for item in x] # insert a curve, make it red and copy the lists list_curve = QwtPlotCurve('y = lorentzian(x)') list_curve.attach(list_plot) list_curve.setPen(QPen(Qt.red)) list_curve.setData(x, y) layout.addWidget(list_plot, 0, 1) list_plot.replot()
def __init__(self, *args): QWidget.__init__(self, *args) layout = QGridLayout(self) # try to create a plot for SciPy arrays # make a curve and copy the data numpy_curve = QwtPlotCurve("y = lorentzian(x)") x = np.arange(0.0, 10.0, 0.01) y = lorentzian(x) numpy_curve.setData(x, y) # here, we know we can plot NumPy arrays numpy_plot = QwtPlot(self) numpy_plot.setTitle("numpy array") numpy_plot.setCanvasBackground(Qt.white) numpy_plot.plotLayout().setCanvasMargin(0) numpy_plot.plotLayout().setAlignCanvasToScales(True) # insert a curve and make it red numpy_curve.attach(numpy_plot) numpy_curve.setPen(QPen(Qt.red)) layout.addWidget(numpy_plot, 0, 0) numpy_plot.replot() # create a plot widget for lists of Python floats list_plot = QwtPlot(self) list_plot.setTitle("Python list") list_plot.setCanvasBackground(Qt.white) list_plot.plotLayout().setCanvasMargin(0) list_plot.plotLayout().setAlignCanvasToScales(True) x = drange(0.0, 10.0, 0.01) y = [lorentzian(item) for item in x] # insert a curve, make it red and copy the lists list_curve = QwtPlotCurve("y = lorentzian(x)") list_curve.attach(list_plot) list_curve.setPen(QPen(Qt.red)) list_curve.setData(x, y) layout.addWidget(list_plot, 0, 1) list_plot.replot()
def make(): # create a plot with a white canvas demo = QwtPlot(QwtText("Errorbar Demonstation")) demo.setCanvasBackground(Qt.white) demo.plotLayout().setAlignCanvasToScales(True) grid = QwtPlotGrid() grid.attach(demo) grid.setPen(QPen(Qt.black, 0, Qt.DotLine)) # calculate data and errors for a curve with error bars x = np.arange(0, 10.1, 0.5, np.float) y = np.sin(x) dy = 0.2 * abs(y) # dy = (0.15 * abs(y), 0.25 * abs(y)) # uncomment for asymmetric error bars dx = 0.2 # all error bars the same size errorOnTop = False # uncomment to draw the curve on top of the error bars # errorOnTop = True # uncomment to draw the error bars on top of the curve curve = ErrorBarPlotCurve( x = x, y = y, dx = dx, dy = dy, curvePen = QPen(Qt.black, 2), curveSymbol = QwtSymbol(QwtSymbol.Ellipse, QBrush(Qt.red), QPen(Qt.black, 2), QSize(9, 9)), errorPen = QPen(Qt.blue, 2), errorCap = 10, errorOnTop = errorOnTop, ) curve.attach(demo) demo.resize(640, 480) demo.show() return demo
class MapDemo(QMainWindow): def __init__(self, *args): QMainWindow.__init__(self, *args) self.plot = QwtPlot(self) self.plot.setTitle("A Simple Map Demonstration") self.plot.setCanvasBackground(Qt.white) self.plot.setAxisTitle(QwtPlot.xBottom, "x") self.plot.setAxisTitle(QwtPlot.yLeft, "y") self.plot.setAxisScale(QwtPlot.xBottom, 0.0, 1.0) self.plot.setAxisScale(QwtPlot.yLeft, 0.0, 1.0) self.setCentralWidget(self.plot) # Initialize map data self.count = self.i = 1000 self.xs = np.zeros(self.count, np.float) self.ys = np.zeros(self.count, np.float) self.kappa = 0.2 self.curve = QwtPlotCurve("Map") self.curve.attach(self.plot) self.curve.setSymbol( QwtSymbol(QwtSymbol.Ellipse, QBrush(Qt.red), QPen(Qt.blue), QSize(5, 5))) self.curve.setPen(QPen(Qt.cyan)) toolBar = QToolBar(self) self.addToolBar(toolBar) # 1 tick = 1 ms, 10 ticks = 10 ms (Linux clock is 100 Hz) self.ticks = 10 self.tid = self.startTimer(self.ticks) self.timer_tic = None self.user_tic = None self.system_tic = None self.plot.replot() def setTicks(self, ticks): self.i = self.count self.ticks = int(ticks) self.killTimer(self.tid) self.tid = self.startTimer(ticks) def resizeEvent(self, event): self.plot.resize(event.size()) self.plot.move(0, 0) def moreData(self): if self.i == self.count: self.i = 0 self.x = random.random() self.y = random.random() self.xs[self.i] = self.x self.ys[self.i] = self.y self.i += 1 chunks = [] self.timer_toc = time.time() if self.timer_tic: chunks.append("wall: %s s." % (self.timer_toc - self.timer_tic)) print(' '.join(chunks)) self.timer_tic = self.timer_toc else: self.x, self.y = standard_map(self.x, self.y, self.kappa) self.xs[self.i] = self.x self.ys[self.i] = self.y self.i += 1 def timerEvent(self, e): self.moreData() self.curve.setData(self.xs[:self.i], self.ys[:self.i]) self.plot.replot()
class MapDemo(QMainWindow): def __init__(self, *args): QMainWindow.__init__(self, *args) self.plot = QwtPlot(self) self.plot.setTitle("A Simple Map Demonstration") self.plot.setCanvasBackground(Qt.white) self.plot.setAxisTitle(QwtPlot.xBottom, "x") self.plot.setAxisTitle(QwtPlot.yLeft, "y") self.plot.setAxisScale(QwtPlot.xBottom, 0.0, 1.0) self.plot.setAxisScale(QwtPlot.yLeft, 0.0, 1.0) self.setCentralWidget(self.plot) # Initialize map data self.count = self.i = 1000 self.xs = np.zeros(self.count, np.float) self.ys = np.zeros(self.count, np.float) self.kappa = 0.2 self.curve = QwtPlotCurve("Map") self.curve.attach(self.plot) self.curve.setSymbol(QwtSymbol(QwtSymbol.Ellipse, QBrush(Qt.red), QPen(Qt.blue), QSize(5, 5))) self.curve.setPen(QPen(Qt.cyan)) toolBar = QToolBar(self) self.addToolBar(toolBar) # 1 tick = 1 ms, 10 ticks = 10 ms (Linux clock is 100 Hz) self.ticks = 10 self.tid = self.startTimer(self.ticks) self.timer_tic = None self.user_tic = None self.system_tic = None self.plot.replot() def setTicks(self, ticks): self.i = self.count self.ticks = int(ticks) self.killTimer(self.tid) self.tid = self.startTimer(ticks) def resizeEvent(self, event): self.plot.resize(event.size()) self.plot.move(0, 0) def moreData(self): if self.i == self.count: self.i = 0 self.x = random.random() self.y = random.random() self.xs[self.i] = self.x self.ys[self.i] = self.y self.i += 1 chunks = [] self.timer_toc = time.time() if self.timer_tic: chunks.append("wall: %s s." % (self.timer_toc-self.timer_tic)) print(' '.join(chunks)) self.timer_tic = self.timer_toc else: self.x, self.y = standard_map(self.x, self.y, self.kappa) self.xs[self.i] = self.x self.ys[self.i] = self.y self.i += 1 def timerEvent(self, e): self.moreData() self.curve.setData(self.xs[:self.i], self.ys[:self.i]) self.plot.replot()