// Text Window Level
vtkTextActor *textActor = vtkTextActor::New();
textActor->SetDisplayPosition(px, py);
- textActor->SetInput("--");
+ textActor->SetInput("0");
// Set coordinates to match the old vtkScaledTextActor default value
textActor->GetPosition2Coordinate()->SetCoordinateSystemToNormalizedViewport();