[R] mean from list

From: <statistical.model_at_googlemail.com>
Date: Mon 13 Feb 2006 - 07:06:12 EST


hi all,
I have a simple problem that i am not able to solve. I've a list called datalist with the following structure:

[...]

[[10]]
[[10]]$a

     -1 0 1
  -1 31 5 2
  0 6 7 5
  1 1 7 36

[[10]]$b

     -1 0 1
  -1 31 5 2
  0 6 7 5
  1 1 7 36

[[10]]$c
[1] 0.855

[[10]]$d
[1] 0.855

[...]

with [[1]] ... [[100]]. How can i get the mean value of datalist[[x]]$d, where x represents all elements from 1 to 1000 ?

thanks in advance!!!!

Roberto Furlan
University of Turin



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