Sorry, here it is fixed up. The c should have been list:
Lines <- "conid person construct 1 1 offence 2 1 insight" read.table(textConnection(Lines), header = TRUE, colClasses = list(person = NULL)) On 10/30/06, Gabor Grothendieck <[EMAIL PROTECTED]> wrote: > Here is an example: > > > Lines <- "conid person construct > + 1 1 offence > + 2 1 insight" > > > > read.table(textConnection(Lines), header = TRUE, > + colClasses = c(person = NULL)) > conid person construct > 1 1 1 offence > 2 2 1 insight > > > > > On 10/30/06, Amir Safari <[EMAIL PROTECTED]> wrote: > > > > 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 > > > > > > > > > --------------------------------- > > > > > > [[alternative HTML version deleted]] > > > > > > ______________________________________________ > > > R-help@stat.math.ethz.ch mailing list > > > https://stat.ethz.ch/mailman/listinfo/r-help > > > PLEASE do read the posting guide > > http://www.R-project.org/posting-guide.html > > > and provide commented, minimal, self-contained, reproducible code. > > > > > > > > > > > ________________________________ > > Everyone is raving about the all-new Yahoo! Mail. > > > > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.