[vtkusers] vtkChartXY, QVTKRenderWindowInteractor, PyQt4

[Randy Heiland]

Duh.  To answer my own question, one must manually set axes labels, e.g.:
chart.GetAxis(vtkAxis.LEFT).SetTitle()

On Jul 23, 2011, at 8:07 AM, Randy Heiland wrote:

> If I change the names (SetName) of the arrays, the axes labels on the rendered chart do not change, i.e. they're still "X Axis", "Y Axis".  Suggestions?
> 
>>>> print vtk.vtkVersion.GetVTKVersion()
> 5.9.0
> 
> thanks, Randy
> 
> On Jul 22, 2011, at 10:51 PM, Randy Heiland wrote:
> 
>> For the archive, the following seems to do what I need (until it doesn't):
>> 
>> #  -------  gui-chart.py ------------
>> import sys
>> from vtk import *
>> from vtk.qt4.QVTKRenderWindowInteractor  import QVTKRenderWindowInteractor 
>> from PyQt4 import Qt 
>> from PyQt4 import QtGui 
>> 
>> class test(Qt.QMainWindow):
>>   def __init__(self, parent=None):
>>       Qt.QMainWindow.__init__(self, parent)
>>       self.setWindowTitle(self.tr("PyQt4 vtkChartXY"))
>>       self.workspace = Qt.QWorkspace()
>>       self.setCentralWidget(self.workspace)
>>       self.frame = QtGui.QFrame(self.workspace)
>>       self.hbox = QtGui.QHBoxLayout()
>> 
>>       self.widget = QVTKRenderWindowInteractor(self.frame)
>>       self.widget.Initialize()
>>       self.widget.Start()
>> 
>>       self.table = vtkTable()
>>       self.arrX = vtkFloatArray()
>>       self.arrX.SetName("X Axis")
>>       self.table.AddColumn(self.arrX)
>> 
>>       self.arrY = vtkFloatArray()
>>       self.arrY.SetName("Y value")
>>       self.table.AddColumn(self.arrY)
>> 
>>       numPoints = 20
>>       inc = 7.5 / (numPoints-1)
>>       self.table.SetNumberOfRows(numPoints)
>>       for i in range(numPoints):
>>           self.table.SetValue(i, 0, i * inc)
>>           self.table.SetValue(i, 1, i * inc)
>> 
>>       self.view = vtkContextView()
>>       self.view.GetRenderer().SetBackground(1.0, 1.0, 1.0)
>> 
>>       self.chart = vtkChartXY()
>>       self.view.GetScene().AddItem(self.chart)
>>       self.line = self.chart.AddPlot(vtkChart.LINE)
>>       self.line.SetInput(self.table, 0, 1)
>> 
>>       self.ren = self.view.GetRenderer()
>>       self.renWin = self.widget.GetRenderWindow()
>>       self.renWin.AddRenderer(self.ren)
>> 
>>       self.hbox.addWidget(self.widget)
>>       self.frame.setLayout(self.hbox)
>>       self.workspace.addWindow(self.frame)
>> 
>> if __name__ == "__main__":
>>    app = Qt.QApplication(sys.argv)
>>    mainwindow = test()
>>    mainwindow.show()
>>    sys.exit(app.exec_())
>> 
>> On Jul 22, 2011, at 5:47 PM, Randy Heiland wrote:
>> 
>>> Hi gang,
>>> 
>>> I'm having problems getting a vtkChartXY displayed in PyQt4.  I saw a thread related to this (vtkContextView and QWidget), but didn't see a solution for Python-land.  I'll include 2 example scripts - the 1st works, the 2nd does not.
>>> 
>>> thanks for any help, Randy
>>> <snip>
>> 
>