45048467b3
- Overhaul of SVG export system. Seems to work well. - Fixed image export bugs - Added basic 3D line plot class
130 lines
3.3 KiB
Python
130 lines
3.3 KiB
Python
#!/usr/bin/python -i
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# -*- coding: utf-8 -*-
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## Add path to library (just for examples; you do not need this)
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import initExample
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from pyqtgraph.Qt import QtCore, QtGui
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import numpy as np
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import pyqtgraph as pg
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## create GUI
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app = QtGui.QApplication([])
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w = pg.GraphicsWindow(size=(800,800), border=True)
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v = w.addViewBox(colspan=2)
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#w = QtGui.QMainWindow()
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#w.resize(800,800)
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#v = pg.GraphicsView()
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v.invertY(True) ## Images usually have their Y-axis pointing downward
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v.setAspectLocked(True)
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#v.enableMouse(True)
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#v.autoPixelScale = False
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#w.setCentralWidget(v)
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#s = v.scene()
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#v.setRange(QtCore.QRectF(-2, -2, 220, 220))
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## Create image to display
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arr = np.ones((100, 100), dtype=float)
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arr[45:55, 45:55] = 0
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arr[25, :] = 5
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arr[:, 25] = 5
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arr[75, :] = 5
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arr[:, 75] = 5
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arr[50, :] = 10
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arr[:, 50] = 10
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## Create image items, add to scene and set position
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im1 = pg.ImageItem(arr)
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im2 = pg.ImageItem(arr)
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v.addItem(im1)
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v.addItem(im2)
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im2.moveBy(110, 20)
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v.setRange(QtCore.QRectF(0, 0, 200, 120))
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im3 = pg.ImageItem()
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v2 = w.addViewBox(1,0)
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v2.addItem(im3)
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v2.setRange(QtCore.QRectF(0, 0, 60, 60))
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v2.invertY(True)
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v2.setAspectLocked(True)
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#im3.moveBy(0, 130)
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im3.setZValue(10)
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im4 = pg.ImageItem()
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v3 = w.addViewBox(1,1)
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v3.addItem(im4)
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v3.setRange(QtCore.QRectF(0, 0, 60, 60))
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v3.invertY(True)
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v3.setAspectLocked(True)
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#im4.moveBy(110, 130)
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im4.setZValue(10)
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## create the plot
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pi1 = w.addPlot(2,0, colspan=2)
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#pi1 = pg.PlotItem()
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#s.addItem(pi1)
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#pi1.scale(0.5, 0.5)
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#pi1.setGeometry(0, 170, 300, 100)
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lastRoi = None
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def updateRoi(roi):
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global im1, im2, im3, im4, arr, lastRoi
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if roi is None:
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return
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lastRoi = roi
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arr1 = roi.getArrayRegion(im1.image, img=im1)
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im3.setImage(arr1)
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arr2 = roi.getArrayRegion(im2.image, img=im2)
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im4.setImage(arr2)
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updateRoiPlot(roi, arr1)
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def updateRoiPlot(roi, data=None):
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if data is None:
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data = roi.getArrayRegion(im1.image, img=im1)
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if data is not None:
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roi.curve.setData(data.mean(axis=1))
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## Create a variety of different ROI types
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rois = []
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rois.append(pg.TestROI([0, 0], [20, 20], maxBounds=QtCore.QRectF(-10, -10, 230, 140), pen=(0,9)))
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rois.append(pg.LineROI([0, 0], [20, 20], width=5, pen=(1,9)))
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rois.append(pg.MultiLineROI([[0, 50], [50, 60], [60, 30]], width=5, pen=(2,9)))
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rois.append(pg.EllipseROI([110, 10], [30, 20], pen=(3,9)))
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rois.append(pg.CircleROI([110, 50], [20, 20], pen=(4,9)))
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rois.append(pg.PolygonROI([[2,0], [2.1,0], [2,.1]], pen=(5,9)))
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#rois.append(SpiralROI([20,30], [1,1], pen=mkPen(0)))
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## Add each ROI to the scene and link its data to a plot curve with the same color
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for r in rois:
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v.addItem(r)
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c = pi1.plot(pen=r.pen)
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r.curve = c
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r.sigRegionChanged.connect(updateRoi)
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def updateImage():
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global im1, arr, lastRoi
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r = abs(np.random.normal(loc=0, scale=(arr.max()-arr.min())*0.1, size=arr.shape))
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im1.updateImage(arr + r)
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updateRoi(lastRoi)
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for r in rois:
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updateRoiPlot(r)
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## Rapidly update one of the images with random noise
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t = QtCore.QTimer()
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t.timeout.connect(updateImage)
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t.start(50)
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## Start Qt event loop unless running in interactive mode.
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if __name__ == '__main__':
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import sys
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if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
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QtGui.QApplication.instance().exec_()
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