Added histogram example
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@ -17,12 +17,11 @@ examples = OrderedDict([
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('ImageView', 'ImageView.py'),
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('ImageView', 'ImageView.py'),
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('ParameterTree', 'parametertree.py'),
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('ParameterTree', 'parametertree.py'),
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('Crosshair / Mouse interaction', 'crosshair.py'),
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('Crosshair / Mouse interaction', 'crosshair.py'),
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('Video speed test', 'VideoSpeedTest.py'),
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('Plot speed test', 'PlotSpeedTest.py'),
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('Data Slicing', 'DataSlicing.py'),
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('Data Slicing', 'DataSlicing.py'),
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('Plot Customization', 'customPlot.py'),
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('Plot Customization', 'customPlot.py'),
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('Dock widgets', 'dockarea.py'),
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('Dock widgets', 'dockarea.py'),
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('Console', 'ConsoleWidget.py'),
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('Console', 'ConsoleWidget.py'),
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('Histograms', 'histogram.py'),
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('GraphicsItems', OrderedDict([
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('GraphicsItems', OrderedDict([
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('Scatter Plot', 'ScatterPlot.py'),
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('Scatter Plot', 'ScatterPlot.py'),
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#('PlotItem', 'PlotItem.py'),
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#('PlotItem', 'PlotItem.py'),
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@ -37,6 +36,11 @@ examples = OrderedDict([
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('Arrow', 'Arrow.py'),
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('Arrow', 'Arrow.py'),
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('ViewBox', 'ViewBox.py'),
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('ViewBox', 'ViewBox.py'),
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])),
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])),
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('Benchmarks', OrderedDict([
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('Video speed test', 'VideoSpeedTest.py'),
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('Line Plot update', 'PlotSpeedTest.py'),
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('Scatter Plot update', 'ScatterPlotSpeedTest.py'),
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])),
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('3D Graphics', OrderedDict([
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('3D Graphics', OrderedDict([
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('Volumetric', 'GLVolumeItem.py'),
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('Volumetric', 'GLVolumeItem.py'),
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('Isosurface', 'GLMeshItem.py'),
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('Isosurface', 'GLMeshItem.py'),
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38
examples/histogram.py
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38
examples/histogram.py
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@ -0,0 +1,38 @@
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# -*- coding: utf-8 -*-
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"""
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In this example we draw two different kinds of histogram.
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"""
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import initExample ## Add path to library (just for examples; you do not need this)
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import pyqtgraph as pg
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from pyqtgraph.Qt import QtCore, QtGui
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import numpy as np
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win = pg.GraphicsWindow()
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win.resize(800,350)
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plt1 = win.addPlot()
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plt2 = win.addPlot()
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## make interesting distribution of values
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vals = np.hstack([np.random.normal(size=500), np.random.normal(size=260, loc=4)])
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## draw standard histogram
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y,x = np.histogram(vals, bins=np.linspace(-3, 8, 40))
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## notice that len(x) == len(y)+1
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## We are required to use stepMode=True so that PlotCurveItem will interpret this data correctly.
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curve = pg.PlotCurveItem(x, y, stepMode=True, fillLevel=0, brush=(0, 0, 255, 80))
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plt1.addItem(curve)
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## Now draw all points as a nicely-spaced scatter plot
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y = pg.pseudoScatter(vals, spacing=0.15)
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#plt2.plot(vals, y, pen=None, symbol='o', symbolSize=5)
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plt2.plot(vals, y, pen=None, symbol='o', symbolSize=5, symbolPen=(255,255,255,200), symbolBrush=(0,0,255,150))
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## Start Qt event loop unless running in interactive mode or using pyside.
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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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@ -21,13 +21,13 @@ def mkQApp():
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class GraphicsWindow(GraphicsLayoutWidget):
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class GraphicsWindow(GraphicsLayoutWidget):
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def __init__(self, title=None, size=(800,600), **kargs):
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def __init__(self, title=None, size=(800,600), **kargs):
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mkQApp()
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mkQApp()
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self.win = QtGui.QMainWindow()
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#self.win = QtGui.QMainWindow()
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GraphicsLayoutWidget.__init__(self, **kargs)
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GraphicsLayoutWidget.__init__(self, **kargs)
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self.win.setCentralWidget(self)
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#self.win.setCentralWidget(self)
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self.win.resize(*size)
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self.resize(*size)
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if title is not None:
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if title is not None:
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self.win.setWindowTitle(title)
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self.setWindowTitle(title)
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self.win.show()
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self.show()
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class TabWindow(QtGui.QMainWindow):
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class TabWindow(QtGui.QMainWindow):
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