hi,
>>>> platonic at mail.hz.zj.cn writes:
    >> do u know where can i get the data pine_root which is needed
    >> in= many examples!!  thanks a lot!
go to
http://public.kitware.com/getSoftware.html
and get the data files from there.  I dont know which tarball has the
files you need - but one of them should have it.
prabhu