我们从Python开源项目中，提取了以下9个代码示例，用于说明如何使用pyqtgraph.ViewBox()。
def __init__(self, parent=None): #pyqtgraph.setConfigOptions(imageAxisOrder='row-major') super(self.__class__, self).__init__() self.setupUi(self) self.slider_spatialr.valueChanged.connect(self.runSegment) self.slider_ranger.valueChanged.connect(self.runSegment) self.slider_classes.valueChanged.connect(self.runClassification) self.imageItem = pyqtgraph.ImageItem() self.view = pyqtgraph.ViewBox() self.view.addItem(self.imageItem) #segResult is of class pyqtgraph.GraphicsView self.segResult.setCentralItem(self.view) #get file pathes with buttons self.RGBimgpathButton.clicked.connect(self.getFileRGB) self.smoothedpathButton.clicked.connect(self.getFilesmoothed) self.saveClassificationButton.clicked.connect(self.saveFileClassified) #temporary data of segmented image self.segmentedout = "data/app_segmented.tif" self.RGBimgpath = "data/test_image_cubic_resample.tif" self.smoothedpath = "data/smoothed.tif"
def addAxis(self,plot,**args): """ Add an axis on the right side .. tabularcolumns:: |p{3cm}|p{11cm}| =============== ============================================================================================ **Arguments** =============== ============================================================================================ plot pyqtgraph.PlotWidget *args 1. label Label of the new axis =============== ============================================================================================ :return: pg.ViewBox """ p3 = pg.ViewBox() ax3 = pg.AxisItem('right') plot.plotItem.layout.addItem(ax3, 2, 3+len(plot.axisItems)) plot.plotItem.scene().addItem(p3) ax3.linkToView(p3) p3.setXLink(plot.plotItem) ax3.setZValue(-10000) if args.get('label',False): ax3.setLabel(args.get('label',False), color=args.get('color','#ffffff')) p3.setGeometry(plot.plotItem.vb.sceneBoundingRect()) p3.linkedViewChanged(plot.plotItem.vb, p3.XAxis) ## Handle view resizing Callback = functools.partial(self.updateViews,plot) plot.getViewBox().sigStateChanged.connect(Callback) plot.viewBoxes.append(p3) plot.axisItems.append(ax3) self.plots2D[p3]=[] # TODO do not consider a new axis as a plot. simply make it a part of the axisItems array of the main plot return p3
def enableRightAxis(self,plot): p = pg.ViewBox() plot.showAxis('right') plot.setMenuEnabled(False) plot.scene().addItem(p) plot.getAxis('right').linkToView(p) p.setXLink(plot) plot.viewBoxes.append(p) Callback = functools.partial(self.updateViews,plot) plot.getViewBox().sigStateChanged.connect(Callback) if self.properties['colorScheme']=='white': self.setColorSchemeWhite() self.plots2D[p]=[] return p
def _update_plot_views(self): ## view has resized; update auxiliary views to match self._right_axis.setGeometry(self._plot_item.vb.sceneBoundingRect()) self._top_axis.setGeometry(self._plot_item.vb.sceneBoundingRect()) ## need to re-update linked axes since this was called ## incorrectly while views had different shapes. ## (probably this should be handled in ViewBox.resizeEvent) self._right_axis.linkedViewChanged(self._plot_item.vb, self._right_axis.XAxis) self._top_axis.linkedViewChanged(self._plot_item.vb, self._top_axis.YAxis)
def updateViews(self): ## view has resized; update auxiliary views to match self.plot2.setGeometry(self.plot1.vb.sceneBoundingRect()) ## need to re-update linked axes since this was called ## incorrectly while views had different shapes. ## (probably this should be handled in ViewBox.resizeEvent) self.plot2.linkedViewChanged(self.plot1.vb, self.plot2.XAxis)
def __init__(self, *args, **kwds): pg.ViewBox.__init__(self, *args, **kwds) self.setMouseMode(self.RectMode) # reimplement right-click to zoom out
def mouseDragEvent(self, ev, axis=0): if (ev.button() == QtCore.Qt.LeftButton) and (ev.modifiers() & QtCore.Qt.ControlModifier): pg.ViewBox.mouseDragEvent(self, ev, axis) else: ev.ignore()
def updateViews(self): """ Keep plot views for left and right axis identical when resizing the plot widget. """ # view has resized; update auxiliary views to match self.plot2.setGeometry(self.plot1.vb.sceneBoundingRect()) # need to re-update linked axes since this was called incorrectly while views had different # shapes. (probably this should be handled in ViewBox.resizeEvent) self.plot2.linkedViewChanged(self.plot1.vb, self.plot2.XAxis)
def on_activate(self): """ Definition and initialisation of the GUI. """ self._spectrum_logic = self.get_connector('spectrumlogic1') # setting up the window self._mw = SpectrometerWindow() self._mw.stop_diff_spec_Action.setEnabled(False) self._mw.resume_diff_spec_Action.setEnabled(False) # giving the plots names allows us to link their axes together self._pw = self._mw.plotWidget # pg.PlotWidget(name='Counter1') self._plot_item = self._pw.plotItem # create a new ViewBox, link the right axis to its coordinate system self._right_axis = pg.ViewBox() self._plot_item.showAxis('right') self._plot_item.scene().addItem(self._right_axis) self._plot_item.getAxis('right').linkToView(self._right_axis) self._right_axis.setXLink(self._plot_item) # create a new ViewBox, link the right axis to its coordinate system self._top_axis = pg.ViewBox() self._plot_item.showAxis('top') self._plot_item.scene().addItem(self._top_axis) self._plot_item.getAxis('top').linkToView(self._top_axis) self._top_axis.setYLink(self._plot_item) self._top_axis.invertX(b=True) # handle resizing of any of the elements self._pw.setLabel('left', 'Fluorescence', units='counts/s') self._pw.setLabel('right', 'Number of Points', units='#') self._pw.setLabel('bottom', 'Wavelength', units='nm') self._pw.setLabel('top', 'Relative Frequency', units='Hz') self._mw.rec_single_spectrum_Action.triggered.connect(self.record_single_spectrum) self._mw.start_diff_spec_Action.triggered.connect(self.start_differential_measurement) self._mw.stop_diff_spec_Action.triggered.connect(self.stop_differential_measurement) self._mw.resume_diff_spec_Action.triggered.connect(self.resume_differential_measurement) self._mw.save_spectrum_Action.triggered.connect(self.save_spectrum_data) self._spectrum_logic.sig_specdata_updated.connect(self.updateData) self._mw.show() # Create an empty plot curve to be filled later, set its pen self._curve1 = self._pw.plot() self._curve1.setPen(palette.c2, width=2) self._save_PNG = True
