[R] computing the average response by nlme
Spencer Graves
spencer.graves at pdf.com
Sat Mar 25 02:49:46 CET 2006
Did you get an answer to this post? I didn't see a direct answer,
but I saw a related discussion around the time of your post.
In case you still would like help with this, I recommend you first
consult Pinheiro and Bates (2000) Mixed-Effects Models in S and S-Plus
(Springer) if you haven't already. Also, I just got 93 hits from
RSiteSearch("nlme predict"). Beyond that, the documentation for nlme
says it returns an object of class "nlme". This suggests you try
method(class="nlme"), which identified the following functions with
methods specifically for objects of class "nlme":
formula.nlme* getData.nlme* predict.nlme* update.nlme*
Non-visible functions are asterisked
You can further get the code for "preduct.nlme" using
getAnywhere("predict.nlme"); you can't get it directly, because as the
message indicates, it's "non-visible".
hope this helps.
spencer graves
Marc Bernard wrote:
> Dear All,
>
> let E(Y | t, b, theta) be the conditional expectation of Y where b is a vector of random effects , theta is a vector of fixed effects and t is the time of observation (t =1,2, ...,n).
>
> I wonder if nlme has a function to compue E(Y | t, theta). I know that it can be done by approximating the integrals over b of E(Y | t, b, theta). But I am wondering if nlme has a function to do that directly.
>
> Thank you,
>
> Bernard
>
>
>
>
>
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