[R] input data file

[jim holtman]

I would hope that you don't have 100 'scan' statements; you should
just have a loop that is using a set of file names in a vector to read
the data.  Are you reading the data into separate objects?  If so,
have you considered reading the 100 files into a 'list' so that you
have a single object with all of your data?  This is then easy to save
with the 'save' function and then you can quickly retrieve it with the
'load' statement.

file.names <- c('file1', ..., 'file100')
input.list <- list()
for (i in file.names){
    input.list[[i]] <- scan(i, what=....)
}

You can then 'save(input.list, file='save.Rdata')'.  You can access
the data from the individual files with:

input.list[['file33']]





On 8/7/07, Tiandao Li <Tiandao.Li at usm.edu> wrote:
> In the first part of myfile.R, I used scan() 100 times to read data from
> 100 different tab-delimited files. I want to save this part to another
> data file, so I won't accidently make mistakes, and I want to re-use/input
> it like infile statement in SAS or \input(file.tex} in latex. Don't want
> to copy/paste 100 scan() every time I need to read the same data.
>
> Thanks!
>
> On Tue, 7 Aug 2007, jim holtman wrote:
>
> If you are going to read it back into R, then use 'save'; if it is
> input to another applicaiton, consider 'write.csv'.  I assume that
> when you say "save all my data files" you really mean "save all my R
> objects".
>
> On 8/7/07, Tiandao Li <Tiandao.Li at usm.edu> wrote:
> > Hello,
> >
> > I am new to R. I used scan() to read data from tab-delimited files. I want
> > to save all my data files (multiple scan()) in another file, and use it
> > like infile statement in SAS or \input{tex.file} in latex.
> >
> > Thanks!
> >
> > ______________________________________________
> > R-help at 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.
> >
>
>
> --
> Jim Holtman
> Cincinnati, OH
> +1 513 646 9390
>
> What is the problem you are trying to solve?
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?