[R] automatic file input

[Bansal, Vikas]

Because i have to use the value of i in for loop also.example-

 for(i in 1:100){

 df=read.table($i.out,fill=T,colClasses = "character")
if(i<=50){
 df$V6 <- sapply(df$V6, function(a)
  paste(as.integer(charToRaw(a)), collapse = ' '))}
else{
 df$V5 <- sapply(df$V6, function(a)
  paste(as.integer(charToRaw(a)), collapse = ' '))}
}
 so what I was thinking that if i will use paste, then it is working


 for(i in 1:100){

 df=read.table(paste(i),fill=T,colClasses = "character")
if(i<=50){
 df$V6 <- sapply(df$V6, function(a)
  paste(as.integer(charToRaw(a)), collapse = ' '))}
else{
 df$V5 <- sapply(df$V6, function(a)
  paste(as.integer(charToRaw(a)), collapse = ' '))}
}

This works perfect for me.But I have to change my file names from 1.out to 1 and 2.out to 2 etc.because when i used -

 df=read.table(paste(i.out),fill=T,colClasses = "character")
then it is not working.


Thanking you,
Warm Regards
Vikas Bansal
Msc Bioinformatics
Kings College London
________________________________________
From: istazahn at gmail.com [istazahn at gmail.com] On Behalf Of Ista Zahn [izahn at psych.rochester.edu]
Sent: Monday, August 22, 2011 6:14 PM
To: Bansal, Vikas
Cc: r-help at r-project.org
Subject: Re: [R] automatic file input

Why don't you just use list.files() and iterate over the result in
your for loop?

fileNames <- list.files(pattern = "\\.out")
myFiles <- list()
for(i in fileNames) {
myFiles[[i]] <- read.table(i, fill=T,colClasses = "character")
}

?

Best,
Ista


On Mon, Aug 22, 2011 at 12:34 PM, Bansal, Vikas <vikas.bansal at kcl.ac.uk> wrote:
> Dear Ista
>
> I have searched about the problem and came to know that we can make a list of our file names.But the thing is I am using this code-
>
>
> define<- function()
>  { repeat{
>  hojy=readline("Enter the name of your file: ")
>  if(file.exists(hojy)==T)
> {return(hojy)
> break}
> else
> print("File does not exist.Please enter again")}
>  }
>
>
> for(i in 1:100){
>
> df=read.table(define(),fill=T,colClasses = "character")
> df$V6 <- sapply(df$V6, function(a)
>  paste(as.integer(charToRaw(a)), collapse = ' '))}
>
> so here i am using a function which is asking user to input the file name.But I was thinking that if I will delete this function and will use the read.table like this-
>
> for(i in 1:100){
>
> df=read.table($i.out,fill=T,colClasses = "character")
> df$V6 <- sapply(df$V6, function(a)
>  paste(as.integer(charToRaw(a)), collapse = ' '))}
>
> if you will check this line-
> df=read.table($i.out,fill=T,colClasses = "character")
>
> I have used $i.out here and every time in for loop i will be 1 then 2 then 3 till 100.So it will become very easy.But this $ sign is not working in the R.Can I do this thing in R.
>
>
>
>
> Thanking you,
> Warm Regards
> Vikas Bansal
> Msc Bioinformatics
> Kings College London
> ________________________________________
> From: istazahn at gmail.com [istazahn at gmail.com] On Behalf Of Ista Zahn [izahn at psych.rochester.edu]
> Sent: Monday, August 22, 2011 5:16 PM
> To: Bansal, Vikas
> Cc: r-help at r-project.org
> Subject: Re: [R] automatic file input
>
> Hi Vikas,
> please do make an effort to search for the answer before posting. A
> google search for "R read multiple files" will give you everything you
> need.
>
> Best,
> Ista
>
> On Mon, Aug 22, 2011 at 12:08 PM, Bansal, Vikas <vikas.bansal at kcl.ac.uk> wrote:
>> Dear all,
>>
>> I have 100 files which are used as input.and I have to input the name of  my files again and again.the name of the files are 1.out, 2.out......100.out.
>> I want to know if there is anything like perl so that i can use something like this-
>>
>>
>> for($f = 1; $f <= 100; $f++) {
>>  $file = $f.".out";
>>
>>
>> I have tried this thing in R but it does not work.Can somebody please help me.
>>
>>
>>
>> Thanking you,
>> Warm Regards
>> Vikas Bansal
>> Msc Bioinformatics
>> Kings College London
>> ______________________________________________
>> 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.
>>
>
>
>
> --
> Ista Zahn
> Graduate student
> University of Rochester
> Department of Clinical and Social Psychology
> http://yourpsyche.org
>



--
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org