R help - Jul 2007 - reading and storing files in the workspace

R-help,

I have a vector containing (test) some file names.
The files contents are matrixes.
> test
 [1] "aaOki.txt"    "aOki.txt"     "bOki.txt"    
"c1Oki.txt"
"c2Oki.txt"    "c3Oki.txt"    "cOki.txt"    
"dOki.txt"     "dyp100.txt"
  "dyp200.txt"  
[11] "dyp300.txt"   "dyp400.txt"   "dyp500.txt"  
"dyp600.txt"
"dyp700.txt"   "dyp800.txt"   "eOki.txt"    
"FBdyp100.txt"
"FBdyp150.txt" "FBdyp200.txt".............

What I want to do is to import to R using the same file name
and remove the ".txt" extension out of the object name.
Something like this:

for(i in test)
gsub("\\.", "", paste(i, sep = "")) <-
read.table(file = paste(i, sep ""), header = TRUE)

But I get the following message:

Error in gsub("\\.", "", paste(i, sep = "")) <-
read.table(file paste(i,  :
        target of assignment expands to non-language object


Thanks in advance.

> version
               _                           
platform       i386-pc-mingw32             
arch           i386                        
os             mingw32                     
system         i386, mingw32               
status                                     
major          2                           
minor          5.1                         
year           2007                        
month          06                          
day            27                          
svn rev        42083                       
language       R                           
version.string R version 2.5.1 (2007-06-27)

try:

for (i in test){
    assign(gsub(".txt$", "", i), read.table(i, header=TRUE))
}

On 7/31/07, Luis Ridao Cruz <Luisr at frs.fo>
wrote:
> R-help,
>
> I have a vector containing (test) some file names.
> The files contents are matrixes.
>
> > test
>
>  [1] "aaOki.txt"    "aOki.txt"     "bOki.txt"
"c1Oki.txt"
> "c2Oki.txt"    "c3Oki.txt"    "cOki.txt"    
"dOki.txt"     "dyp100.txt"
>  "dyp200.txt"
> [11] "dyp300.txt"   "dyp400.txt"  
"dyp500.txt"   "dyp600.txt"
> "dyp700.txt"   "dyp800.txt"   "eOki.txt"    
"FBdyp100.txt"
> "FBdyp150.txt" "FBdyp200.txt".............
>
> What I want to do is to import to R using the same file name
> and remove the ".txt" extension out of the object name.
> Something like this:
>
> for(i in test)
> gsub("\\.", "", paste(i, sep = "")) <-
read.table(file = paste(i, sep > ""), header = TRUE)
>
> But I get the following message:
>
> Error in gsub("\\.", "", paste(i, sep = ""))
<- read.table(file > paste(i,  :
>        target of assignment expands to non-language object
>
>
> Thanks in advance.
>
>
> > version
>               _
> platform       i386-pc-mingw32
> arch           i386
> os             mingw32
> system         i386, mingw32
> status
> major          2
> minor          5.1
> year           2007
> month          06
> day            27
> svn rev        42083
> language       R
> version.string R version 2.5.1 (2007-06-27)
>
> ______________________________________________
> 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?