Dear All, I know this must be a one-liner, but I am experiencing problems. I need to read lists of long integers stored on a text files, i.e. which reads like "7359700484475972" "7359700484475972" "0" "7359700484475972" "0" "0" "0" "97189954101318722" "0" "0" "7811896690636354" "7359700490636354" "0" "0" "0" "7811896684475972" "7811896684475972" "7811896690636354" "8447597298304052" "7359700484475972" "0" "7359700498304052" "7359700498304052" "7359700498304052" "0" "7359700498304052" "7359700484475972" "7359700484475972" Now, for me every integer is just a symbol, i.e. the ID of some object and I simply need to find out how many times and where it occurs in this file. Bottom line: I would like to read this file directly as a string to ensure I will not have any trouble of integer overflow or rounding error. I tried readLines, but I cannot get rid of \n. Any help is appreciated. Cheers Lorenzo
Try thist...
your.strings <- scan("yourfilename.dat", what="")
Michael
On 4 October 2010 22:04, Lorenzo Isella <lorenzo.isella at gmail.com>
wrote:> Dear All,
> I know this must be a one-liner, but I am experiencing problems.
> I need to read lists of long integers stored on a text files, i.e. which
> reads like
>
> "7359700484475972"
> "7359700484475972"
> "0"
> "7359700484475972"
> "0"
> "0"
> "0"
> "97189954101318722"
> "0"
> "0"
> "7811896690636354"
> "7359700490636354"
> "0"
> "0"
> "0"
> "7811896684475972"
> "7811896684475972"
> "7811896690636354"
> "8447597298304052"
> "7359700484475972"
> "0"
> "7359700498304052"
> "7359700498304052"
> "7359700498304052"
> "0"
> "7359700498304052"
> "7359700484475972"
> "7359700484475972"
>
> Now, for me every integer is just a symbol, i.e. the ID of some object and
I
> simply need to find out how many times and where it occurs in this file.
> Bottom line: I would like to read this file directly as a string to ensure
I
> will not have any trouble of integer overflow or rounding error.
> I tried readLines, but I cannot get rid of \n.
> Any help is appreciated.
> Cheers
>
> Lorenzo
>
> ______________________________________________
> R-help at r-project.org 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.
>
Use scan whith what='' or read.table with colClasses='character'. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.snow at imail.org 801.408.8111> -----Original Message----- > From: r-help-bounces at r-project.org [mailto:r-help-bounces at r- > project.org] On Behalf Of Lorenzo Isella > Sent: Monday, October 04, 2010 5:05 AM > To: r-help > Subject: [R] Reading Strings in R > > Dear All, > I know this must be a one-liner, but I am experiencing problems. > I need to read lists of long integers stored on a text files, i.e. > which > reads like > > "7359700484475972" > "7359700484475972" > "0" > "7359700484475972" > "0" > "0" > "0" > "97189954101318722" > "0" > "0" > "7811896690636354" > "7359700490636354" > "0" > "0" > "0" > "7811896684475972" > "7811896684475972" > "7811896690636354" > "8447597298304052" > "7359700484475972" > "0" > "7359700498304052" > "7359700498304052" > "7359700498304052" > "0" > "7359700498304052" > "7359700484475972" > "7359700484475972" > > Now, for me every integer is just a symbol, i.e. the ID of some object > and I simply need to find out how many times and where it occurs in > this > file. > Bottom line: I would like to read this file directly as a string to > ensure I will not have any trouble of integer overflow or rounding > error. > I tried readLines, but I cannot get rid of \n. > Any help is appreciated. > Cheers > > Lorenzo > > ______________________________________________ > R-help at r-project.org 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.