Commit f04049f0 authored by Luke Campagnola's avatar Luke Campagnola
Browse files

Added histogram example

parent 15d9c1b3
......@@ -17,12 +17,11 @@ examples = OrderedDict([
('ImageView', 'ImageView.py'),
('ParameterTree', 'parametertree.py'),
('Crosshair / Mouse interaction', 'crosshair.py'),
('Video speed test', 'VideoSpeedTest.py'),
('Plot speed test', 'PlotSpeedTest.py'),
('Data Slicing', 'DataSlicing.py'),
('Plot Customization', 'customPlot.py'),
('Dock widgets', 'dockarea.py'),
('Console', 'ConsoleWidget.py'),
('Histograms', 'histogram.py'),
('GraphicsItems', OrderedDict([
('Scatter Plot', 'ScatterPlot.py'),
#('PlotItem', 'PlotItem.py'),
......@@ -37,6 +36,11 @@ examples = OrderedDict([
('Arrow', 'Arrow.py'),
('ViewBox', 'ViewBox.py'),
])),
('Benchmarks', OrderedDict([
('Video speed test', 'VideoSpeedTest.py'),
('Line Plot update', 'PlotSpeedTest.py'),
('Scatter Plot update', 'ScatterPlotSpeedTest.py'),
])),
('3D Graphics', OrderedDict([
('Volumetric', 'GLVolumeItem.py'),
('Isosurface', 'GLMeshItem.py'),
......
# -*- coding: utf-8 -*-
"""
In this example we draw two different kinds of histogram.
"""
import initExample ## Add path to library (just for examples; you do not need this)
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np
win = pg.GraphicsWindow()
win.resize(800,350)
plt1 = win.addPlot()
plt2 = win.addPlot()
## make interesting distribution of values
vals = np.hstack([np.random.normal(size=500), np.random.normal(size=260, loc=4)])
## draw standard histogram
y,x = np.histogram(vals, bins=np.linspace(-3, 8, 40))
## notice that len(x) == len(y)+1
## We are required to use stepMode=True so that PlotCurveItem will interpret this data correctly.
curve = pg.PlotCurveItem(x, y, stepMode=True, fillLevel=0, brush=(0, 0, 255, 80))
plt1.addItem(curve)
## Now draw all points as a nicely-spaced scatter plot
y = pg.pseudoScatter(vals, spacing=0.15)
#plt2.plot(vals, y, pen=None, symbol='o', symbolSize=5)
plt2.plot(vals, y, pen=None, symbol='o', symbolSize=5, symbolPen=(255,255,255,200), symbolBrush=(0,0,255,150))
## Start Qt event loop unless running in interactive mode or using pyside.
import sys
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()
......@@ -21,13 +21,13 @@ def mkQApp():
class GraphicsWindow(GraphicsLayoutWidget):
def __init__(self, title=None, size=(800,600), **kargs):
mkQApp()
self.win = QtGui.QMainWindow()
#self.win = QtGui.QMainWindow()
GraphicsLayoutWidget.__init__(self, **kargs)
self.win.setCentralWidget(self)
self.win.resize(*size)
#self.win.setCentralWidget(self)
self.resize(*size)
if title is not None:
self.win.setWindowTitle(title)
self.win.show()
self.setWindowTitle(title)
self.show()
class TabWindow(QtGui.QMainWindow):
......
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