[R] R for large data sets

[wei, xiaoyan]

Hi All,

As a part of our regular data analysis, I have to read in large data sets
with six columns and about a million rows. In Splus, this usually take a
couple of minutes. I just tried R, it seems take forever to use read.table()
to read in the data frame! It did not help much even though I specified
colClasses and nrows in read.table().

How is R's ability to analyze large data sets? I used R on solaris 2.6 and I
used all default compilation flags when building the R package. Will it help
if I use some compilation flags with higher optimization level? 

Thanks in advance.
Xiaoyan
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