[R] R memory question (fwd)

[Liaw, Andy]

Your numbers are a bit confusing.  You said the "matrix" (shouldn't it be a
data frame?) is 21632*12.  Does that mean you have 21632 rows and 12
columns?  Then how can Y also be 21632*12?  If G is really a factor with
21632 levels, and there are 21632 observations, then having G alone in the
model will give you perfect prediction, but quite useless.

Andy

> -----Original Message-----
> From: Jing Wu [mailto:jingw at cse.ucsc.edu]
> Sent: Thursday, September 05, 2002 10:58 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] R memory question (fwd)
> 
> 
> Dear all,
> 
> I am trying to use rlm in MASS to do an analysis on a 21632*12 matrix.
> There are 4  factors A,D,V,G; A of level 6, D of level 2, V 
> of level 2, G
> of level 21632, and 21632*12 observations Y. The data format is
> A D V G Y
> 1 1 1 1 0.1
> 1 1 1 2 0.2
> ...
> 
> The command I use is rlm(Y~A+D+V*G,data=data.dat)
>  I got the same error message:
> Error in rep(data, t1) : cannot allocate vector of length 467748756
> 
> I am using a unix machine of 4GM memory. I would like to know if R is
> using all the available memory and/or how much memory R would use to
> handle is data set.
> 
> 
> Jing
> 
> 
> 
> 
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