4d846e2aad
- disabled opengl (performance issues in Qt 4.7)
- numerous caching changes (disabled deviceCoordinateCache due to performance issues)
- speed up loading large images in ImageView
- bugfixes from Ingo Breßler
- Transform rotation bugfix
- Added debug module
- Major performance enhancements for scatterplot, fixed point clicking issues
** API change for scatterplot click signals
- Drawing on ImageItem is working well now
- PlotItem downsampling no longer uses scipy.signal.resample (this was creating artifacts)
- Fixed ViewBox behavior when aspect-locked
83 lines
2.1 KiB
Python
Executable File
83 lines
2.1 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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import sys, os
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## Add path to library (just for examples; you do not need this)
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
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from PyQt4 import QtGui, QtCore
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import pyqtgraph as pg
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import numpy as np
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#QtGui.QApplication.setGraphicsSystem('raster')
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app = QtGui.QApplication([])
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mw = QtGui.QMainWindow()
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mw.resize(800,800)
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cw = QtGui.QWidget()
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layout = QtGui.QGridLayout()
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cw.setLayout(layout)
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mw.setCentralWidget(cw)
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w1 = pg.PlotWidget()
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layout.addWidget(w1, 0,0)
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w2 = pg.PlotWidget()
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layout.addWidget(w2, 1,0)
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w3 = pg.GraphicsView()
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w3.enableMouse()
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w3.aspectLocked = True
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layout.addWidget(w3, 0,1)
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w4 = pg.PlotWidget()
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#vb = pg.ViewBox()
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#w4.setCentralItem(vb)
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layout.addWidget(w4, 1,1)
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mw.show()
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n = 3000
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s1 = pg.ScatterPlotItem(size=10, pen=QtGui.QPen(QtCore.Qt.NoPen), brush=QtGui.QBrush(QtGui.QColor(255, 255, 255, 20)))
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pos = np.random.normal(size=(2,n), scale=1e-5)
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spots = [{'pos': pos[:,i], 'data': 1} for i in range(n)] + [{'pos': [0,0], 'data': 1}]
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s1.addPoints(spots)
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w1.addDataItem(s1)
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def clicked(plot, points):
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print "clicked points", points
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s1.sigClicked.connect(clicked)
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s2 = pg.ScatterPlotItem(pxMode=False)
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spots2 = []
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for i in range(10):
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for j in range(10):
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spots2.append({'pos': (1e-6*i, 1e-6*j), 'size': 1e-6, 'brush':pg.intColor(i*10+j, 100)})
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s2.addPoints(spots2)
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w2.addDataItem(s2)
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s2.sigClicked.connect(clicked)
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s3 = pg.ScatterPlotItem(size=10, pen=pg.mkPen('w'), pxMode=True)
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pos = np.random.normal(size=(2,3000), scale=1e-5)
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spots = [{'pos': pos[:,i], 'data': 1, 'brush':pg.intColor(i, 3000)} for i in range(3000)]
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s3.addPoints(spots)
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w3.addItem(s3)
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w3.setRange(s3.boundingRect())
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s3.sigClicked.connect(clicked)
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s4 = pg.ScatterPlotItem(identical=True, size=10, pen=QtGui.QPen(QtCore.Qt.NoPen), brush=QtGui.QBrush(QtGui.QColor(255, 255, 255, 20)))
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#pos = np.random.normal(size=(2,n), scale=1e-5)
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#spots = [{'pos': pos[:,i], 'data': 1} for i in range(n)] + [{'pos': [0,0], 'data': 1}]
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s4.addPoints(spots)
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w4.addDataItem(s4)
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## Start Qt event loop unless running in interactive mode.
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if sys.flags.interactive != 1:
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app.exec_()
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