[vtkusers] how to pick vtkXYPlotActor points

[Ashley Sher]

you'll be using vtkPointPicker?

If so, hope this will help. 

//usual render stuffs
vtkRenderer *ren = vtkRenderer::New();
vtkRenderWindow *renWin = vtkRenderWindow::New();	  
vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
iren->SetRenderWindow (renWin);

//create using vtkXYPlotActors
:
:

//create a marker for the pick
vtkSphereSource *sphere = vtkSphereSource::New();
vtkPolyDataMapper *sphereMapper = vtkPolyDataMapper::New();
sphereMapper->SetInput(sphere->GetOutput());
vtkActor *sphereActor = vtkActor::New();
sphereActor->SetMapper(sphereMapper);
sphereActor->PickableOff();

ren->AddActor(sphereActor);

//callback command
LeftClickCallback *callback = LeftClickCallback::New();
callback->SetRenderer(ren);
callback->SetSelectionActor(textActor);

iren->AddObserver (vtkCommand::CharEvent, callback, 0);
iren->ReInitialize();
iren->Start ();

vtkCamera *cam = ren->GetActiveCamera();
renWin->Render();
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