_scalarbarActor->SetNumberOfLabels(4);
int fontsize = _scalarbarActor->GetLabelTextProperty()->GetFontSize();
_scalarbarActor->GetLabelTextProperty()->SetFontSize(fontsize/2);
_scalarbarActor->SetNumberOfLabels(4);
int fontsize = _scalarbarActor->GetLabelTextProperty()->GetFontSize();
_scalarbarActor->GetLabelTextProperty()->SetFontSize(fontsize/2);