31 lines
746 B
Python
31 lines
746 B
Python
|
# -*- 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
|
||
|
|
from pyqtgraph.Qt import QtGui
|
||
|
|
import numpy as np
|
||
|
|
|
||
|
|
import pyqtgraph as pg
|
||
|
|
import numpy as np
|
||
|
|
|
||
|
|
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()
|
||
|
|
err = pg.ErrorBarItem(x=x, y=y, top=top, bottom=bottom, beam=0.5)
|
||
|
|
plt.addItem(err)
|
||
|
|
plt.plot(x, y, symbol='o')
|
||
|
|
|
||
|
|
## 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_()
|