我发现了一个快速的工作围绕这在一定程度适合我的目的。我想我会在这里发布它,以防其他人感到好奇,并且可能对他们有所帮助。它涉及继承AxisItem并指定tickStrings。它不能很好地工作,因为它保持与底部主轴线相同的嘀嗒声位置,但它至少应该让我知道我在看什么。
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np
class CustomAxis(pg.AxisItem):
def tickStrings(self, values, scale, spacing):
return ['{:.4f}'.format(1./i) for i in values]
pg.mkQApp()
pw = pg.PlotWidget()
pw.show()
pw.setWindowTitle('pyqtgraph example: MultipleXAxes')
p1 = pw.plotItem
p1.setLabels(left='axis 1')
# Get rid of the item at the grid position where the top should be
p1.layout.removeItem(p1.getAxis('top'))
# make our own, setting the parent and orientation
caxis = CustomAxis(orientation='top', parent=p1)
caxis.setLabel('inverted')
caxis.linkToView(p1.vb)
# set the new one for internal plotitem
p1.axes['top']['item'] = caxis
# and add it to the layout
p1.layout.addItem(caxis, 1, 1)
p1.plot(np.arange(1, 7), [1,2,4,8,16,32])
#p2.addItem(pg.PlotCurveItem(1./np.arange(1, 7), [1,2,4,8,16,32], pen='b'))
## 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_()
很明显,返回值应该被任何与两轴相关的函数取代。
我有一个类似的问题,但在我的情况下,它也取决于如何改变轴的情节。我用以下方式解决了这个问题,但感觉不正确。该问题的链接http://stackoverflow.com/questions/43545364/pyqtgraph-imageitems-new-axis-labels。也许你可以帮助我? –