[R] Batch Import

[Peter Dalgaard BSA]

tod.strugnell at yale.edu writes:

> I  would like to batch import a series of files. Every imported file
> will get the same prefix followed by a digit corresponding to it's
> identity (prefix.1, prefix.2, prefix.3, etc).
> 
> the general structure I assume would be something like:
> 
> for (i in 1:i) {
>         prefix.i <- function("data", i)
> }
> 
> At present I have not found any pointers/methods on how to accomplish
> this. The
> methods I have tried end up writing the new data overtop of the old
> using the same filename.  Any suggestions or resources that I have
> missed or should refer to would be appreciated.

You can do it with a construction of the form

assign(paste("prefix",i,sep=""), func("data", i))

if you want, but I don't think that's what you want. More likely you'd
really want a higher-level structure to hold the values, e.g.

prefix <- lapply(1:n, function(i) func("data", i))

would give you the structures as prefix$1, prefix$2, ....
(or prefix[[1]], prefix[[2]], ...)

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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