/usr/lib/python2.7/dist-packages/pyqtgraph/examples/GraphicsLayout.py is in python-pyqtgraph 0.9.10-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Demonstrate the use of layouts to control placement of multiple plots / views /
labels
"""
## Add path to library (just for examples; you do not need this)
import initExample
from pyqtgraph.Qt import QtGui, QtCore
import pyqtgraph as pg
import numpy as np
app = QtGui.QApplication([])
view = pg.GraphicsView()
l = pg.GraphicsLayout(border=(100,100,100))
view.setCentralItem(l)
view.show()
view.setWindowTitle('pyqtgraph example: GraphicsLayout')
view.resize(800,600)
## Title at top
text = """
This example demonstrates the use of GraphicsLayout to arrange items in a grid.<br>
The items added to the layout must be subclasses of QGraphicsWidget (this includes <br>
PlotItem, ViewBox, LabelItem, and GrphicsLayout itself).
"""
l.addLabel(text, col=1, colspan=4)
l.nextRow()
## Put vertical label on left side
l.addLabel('Long Vertical Label', angle=-90, rowspan=3)
## Add 3 plots into the first row (automatic position)
p1 = l.addPlot(title="Plot 1")
p2 = l.addPlot(title="Plot 2")
vb = l.addViewBox(lockAspect=True)
img = pg.ImageItem(np.random.normal(size=(100,100)))
vb.addItem(img)
vb.autoRange()
## Add a sub-layout into the second row (automatic position)
## The added item should avoid the first column, which is already filled
l.nextRow()
l2 = l.addLayout(colspan=3, border=(50,0,0))
l2.setContentsMargins(10, 10, 10, 10)
l2.addLabel("Sub-layout: this layout demonstrates the use of shared axes and axis labels", colspan=3)
l2.nextRow()
l2.addLabel('Vertical Axis Label', angle=-90, rowspan=2)
p21 = l2.addPlot()
p22 = l2.addPlot()
l2.nextRow()
p23 = l2.addPlot()
p24 = l2.addPlot()
l2.nextRow()
l2.addLabel("HorizontalAxisLabel", col=1, colspan=2)
## hide axes on some plots
p21.hideAxis('bottom')
p22.hideAxis('bottom')
p22.hideAxis('left')
p24.hideAxis('left')
p21.hideButtons()
p22.hideButtons()
p23.hideButtons()
p24.hideButtons()
## Add 2 more plots into the third row (manual position)
p4 = l.addPlot(row=3, col=1)
p5 = l.addPlot(row=3, col=2, colspan=2)
## show some content in the plots
p1.plot([1,3,2,4,3,5])
p2.plot([1,3,2,4,3,5])
p4.plot([1,3,2,4,3,5])
p5.plot([1,3,2,4,3,5])
## Start Qt event loop unless running in interactive mode.
if __name__ == '__main__':
import sys
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()
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