[vtkusers] Please help with the 2D plotting class vtkxyplotactor?

[Harlow Eric D Contr 412 TW/ENR]

Hello,

I am trying to set tick marks in my 2D plot. I realize this should be easy,
but nothing happens when I execute the following code.  It steps into the
macros for setting the various values, but to my dismay no tick marks
appear. 

Here is the code I am using.

	vtkAxisActor2D* myXAxis = PlotActor_->GetXAxisActor2D();
	vtkAxisActor2D* myYAxis = PlotActor_->GetYAxisActor2D();
	myXAxis->SetTickLength(10);

	myXAxis->SetTickOffset(1);
	myXAxis->SetTickVisibility(1);
	myXAxis->TickVisibilityOn();


Any help is appreciated.

Thanks again,

Eric