我们从Python开源项目中，提取了以下6个代码示例，用于说明如何使用pyqtgraph.RectROI()。
def test_getArrayRegion(transpose=False): pr = pg.PolyLineROI([[0, 0], [27, 0], [0, 28]], closed=True) pr.setPos(1, 1) rois = [ (pg.ROI([1, 1], [27, 28], pen='y'), 'baseroi'), (pg.RectROI([1, 1], [27, 28], pen='y'), 'rectroi'), (pg.EllipseROI([1, 1], [27, 28], pen='y'), 'ellipseroi'), (pr, 'polylineroi'), ] for roi, name in rois: # For some ROIs, resize should not be used. testResize = not isinstance(roi, pg.PolyLineROI) origMode = pg.getConfigOption('imageAxisOrder') try: if transpose: pg.setConfigOptions(imageAxisOrder='row-major') check_getArrayRegion(roi, 'roi/'+name, testResize, transpose=True) else: pg.setConfigOptions(imageAxisOrder='col-major') check_getArrayRegion(roi, 'roi/'+name, testResize) finally: pg.setConfigOptions(imageAxisOrder=origMode)
def setup(self): self.ui = self.dockarea = pyqtgraph.dockarea.DockArea() self.imview = pg.ImageView() self.imview.getView().invertY(True) # uper left origin self.dockarea.addDock(name='Full Image', widget=self.imview) self.imview_roi = pg.ImageView() self.imview_roi.getView().invertY(True) # upper left origin self.dockarea.addDock(name='ROI Image', widget=self.imview_roi) self.imview_gauss = pg.ImageView() self.imview_gauss.getView().invertY(True) # upper left origin self.dockarea.addDock(name='Gauss Fit Image', widget=self.imview_gauss) self.rect_roi = pg.RectROI([20, 20], [100, 100], pen=(0,9)) self.imview.getView().addItem(self.rect_roi) self.rect_roi.sigRegionChanged[object].connect(self.on_change_rect_roi) self.info_label = QtWidgets.QLabel() self.dockarea.addDock(name='info', widget=self.info_label)
def __init__(self, model): sp = model _, _, sizeE, sizeN = sp.covariance.noise_coord self.patch_size_roi = pg.RectROI( pos=(0., 0.), size=(sizeE, sizeN), sideScalers=True, movable=False, pen=pen_roi) self.patch_size_roi.sigRegionChangeFinished.connect(self.update) self._anisotropic = False self.components_available = { 'synthetic_noise': [ 'Noise', lambda sp: sp.covariance.syntheticNoise( self.sizePatchPx(), anisotropic=self.anisotropic) ]} self._component = 'synthetic_noise' KitePlot.__init__(self, model=model) self.addItem(self.patch_size_roi)
def triggerKnobEnabledChange(self, state): self.triggerKnobSource.setEnabled(state) self.triggerKnobDirection.setEnabled(state) if state: if self.triggX is None: self.triggX = 0.5 if self.triggY is None: self.triggY = 0 if self.triggerDiamond is None: self.triggerDiamond = pg.RectROI([self.triggX * self.samples / self.ratioBin, self.triggY], [0, 0], invertible=True, pen=pg.mkPen(None)) self.triggerDiamond.sigRegionChanged.connect(self.triggerDiamondUpdate) self.viewPlot.addItem(self.triggerDiamond) else: self.viewPlot.removeItem(self.triggerDiamond) self.triggerDiamond = None self.triggerReset = True
def setup(self): #self.ui = self.splitter = QtWidgets.QSplitter() #self.ui.setLayout(QtWidgets.QVBoxLayout()) self.ui = self.dockarea = dockarea.DockArea() self.imview = pg.ImageView() self.imview.getView().invertY(False) # lower left origin #self.splitter.addWidget(self.imview) self.dockarea.addDock(name='Image', widget=self.imview) self.graph_layout = pg.GraphicsLayoutWidget() #self.splitter.addWidget(self.graph_layout) self.dockarea.addDock(name='Spec Plot', widget=self.graph_layout) self.spec_plot = self.graph_layout.addPlot() self.rect_plotdata = self.spec_plot.plot() self.point_plotdata = self.spec_plot.plot(pen=(0,9)) # Rectangle ROI self.rect_roi = pg.RectROI([20, 20], [20, 20], pen=(0,9)) self.rect_roi.addTranslateHandle((0.5,0.5)) self.imview.getView().addItem(self.rect_roi) self.rect_roi.sigRegionChanged[object].connect(self.on_change_rect_roi) # Point ROI self.circ_roi = pg.CircleROI( (0,0), (2,2) , movable=True, pen=(0,9)) #self.circ_roi.removeHandle(self.circ_roi.getHandles()[0]) h = self.circ_roi.addTranslateHandle((0.5,.5)) h.pen = pg.mkPen('r') h.update() self.imview.getView().addItem(self.circ_roi) self.circ_roi.removeHandle(0) self.circ_roi_plotline = pg.PlotCurveItem([0], pen=(0,9)) self.imview.getView().addItem(self.circ_roi_plotline) self.circ_roi.sigRegionChanged[object].connect(self.on_update_circ_roi) self.hyperspec_data = None self.display_image = None self.spec_x_array = None self.scan_specific_setup()
