[vtkusers] Get Individual Actor

[Hamp Donald]

Hi
      Suppose I have a collection of actors. 
ren1=importer->GetRenderer();
vtkActorCollection *actorcol =
vtkActorCollection::New();
actorcol = ren1->GetActors();
actorcol->Print(cout);

I want to acess them one by one. Please help me in
this regard. The following line is working only.
GetNextActor() is not working. May be something have
to be initialized. Please help me.

actor = actorcol->GetLastActor();

Regards
Donald 

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