/usr/lib/python2.7/dist-packages/pyqtgraph/examples/ScaleBar.py is in python-pyqtgraph 0.9.10-5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | # -*- coding: utf-8 -*-
"""
Demonstrates ScaleBar
"""
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
pg.mkQApp()
win = pg.GraphicsWindow()
win.setWindowTitle('pyqtgraph example: ScaleBar')
vb = win.addViewBox()
vb.setAspectLocked()
img = pg.ImageItem()
img.setImage(np.random.normal(size=(100,100)))
img.scale(0.01, 0.01)
vb.addItem(img)
scale = pg.ScaleBar(size=0.1)
scale.setParentItem(vb)
scale.anchor((1, 1), (1, 1), offset=(-20, -20))
## Start Qt event loop unless running in interactive mode or using pyside.
if __name__ == '__main__':
import sys
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()
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