pyqtgraph/examples/ErrorBarItem.py

34 lines
877 B
Python
Raw Normal View History

2013-02-12 02:45:41 +00:00
# -*- coding: utf-8 -*-
"""
Demonstrates basic use of ErrorBarItem
"""
import initExample ## Add path to library (just for examples; you do not need this)
import pyqtgraph as pg
2014-06-27 14:55:55 +00:00
from pyqtgraph.Qt import QtGui, QtCore
2013-02-12 02:45:41 +00:00
import numpy as np
import pyqtgraph as pg
import numpy as np
2013-02-13 00:15:45 +00:00
pg.setConfigOptions(antialias=True)
2013-02-12 02:45:41 +00:00
x = np.arange(10)
y = np.arange(10) %3
top = np.linspace(1.0, 3.0, 10)
bottom = np.linspace(2, 0.5, 10)
plt = pg.plot()
2013-02-25 04:09:03 +00:00
plt.setWindowTitle('pyqtgraph example: ErrorBarItem')
2013-02-12 02:45:41 +00:00
err = pg.ErrorBarItem(x=x, y=y, top=top, bottom=bottom, beam=0.5)
plt.addItem(err)
2013-02-13 00:15:45 +00:00
plt.plot(x, y, symbol='o', pen={'color': 0.8, 'width': 2})
2013-02-12 02:45:41 +00:00
## 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_()