[R] tree model large dataset -error

[srinivasa raghavan]

Hi R-users,

     I was trying to do CART using the tree package
for a dataset with 6 groups and 1000 predictor
variables, number of observations 5000. The following
error message is generated

Error:cannot allocate vector of size 3910 kb
In addition: warning message:
Reached total allocation of 125Mb:

I am using R 1.3 for Windows 98 in a pII with 128
MBRAM

    If RAM should be increased what is the ideal
system configuration for processing large datasets say
more than 500 MB size to perform Multivariate and
Exploratory data analysis( I maynot be able to switch
to mainframe or supercomputers)

any suggestion will be highly appreciated

srinivas

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