Thank you so much for reply. I tried to do your suggested idea. It did not
work. what could be my mistake ? I got the same result with and without
colClasses=c() arguement. What could be the reason? even using header=TRUE the
result change slightly but not into desired one.
Gabor Grothendieck <[EMAIL PROTECTED]> wrote: See the colClasses argument of
read.table.
e.g.
read.table("myfile", header = TRUE, colClasses = c(person = NULL))
assuming you don't want the column labelled person in the header.
On 10/30/06, Amir Safari wrote:
>
>
> Dear R users,
> Sometimes it is needed to read only some columns from a table, in
> particulare for high frequency data. How it is possible to read just some
> certain columns using read.table ( ). The reason could be keeping space in R
> and in particular accelerating in reading data when the number of rows are
> huge and some of them are not needed.
> Thank you very much,
> Amir
>
>
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