Question

我通过删除现有的安装确保没有其他pyqtgraph：

rm -rf  ~idf/anaconda/lib/python2.7/site-packages/pyqtgraph*

我使用

下载了带有date-axis-item的分支

git clone -b date-axis-item https://github.com/3rdcycle/pyqtgraph.git

然后在下载的分支目录

中运行

python setup.py install

当我尝试运行此程序时，它失败并带有

[idf@localhost python]$ python AxisExample1.py 
Traceback (most recent call last):
  File "AxisExample1.py", line 12, in <module>
    axis = pg.DateTimeAxisItem(orientation='bottom')
AttributeError: 'module' object has no attribute 'DateTimeAxisItem'

请注意我做错了什么？

# -*- coding: utf-8 -*-
"""
Description of example
"""

import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np

pg.mkQApp()

axis = pg.DateTimeAxisItem(orientation='bottom')
pw = pg.PlotWidget(axisItems={'bottom': axis})
pw.setWindowTitle('pyqtgraph example: DateTimeAxis')
pw.show()
pw.setXRange(1383960000, 1384020000) 

## 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_()

Answer 1

git clone https://github.com/3rdcycle/pyqtgraph.git

git checkout origin / date-axis-item

pip uninstall pyqtgraph

python setup.py install

并将您的示例更改为：

# -*- coding: utf-8 -*-
"""
Description of example
"""

import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np

pg.mkQApp()

axis = pg.DateAxisItem(orientation='bottom')
pw = pg.PlotWidget(axisItems={'bottom': axis})
pw.setWindowTitle('pyqtgraph example: DateTimeAxis')
pw.show()
pw.setXRange(1383960000, 1384020000) 

## 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().exe

应该有用。

如何从分支访问DateAxisItem

1 个答案: