Dear all,
I think I'm nearly there in writing R code which will read in files with two
variable parts to the file name and then assigning these file names to objects,
which also have two variable parts. I have got the code running without
encountering errors, however, I receive 50+ of the same warnings:
1: In assign(paste("Fekete_", index$year, index$month, sep = ""), ... :
only the first element is used as variable name
And it's true, when I do ls() only Fekete198601 has been assigned. I've
attempted to rectify this, but have only come up against further errors.
The code as it stands, is as follows:
# READ IN FILES FROM DISK
# File names have two variable parts: creating a 'file index' is a two-step
process
index <- expand.grid(year = sprintf("%04d", seq(1986, 1995)), month =
sprintf("%02d", 1:12))
filelist <- paste("C:\\Documents and Settings\\Data\\comp_runoff_hd_",
paste(index$year, index$month, sep=''), '.asc', sep='')
filelist
# Assign file names to individual objects with variable name components
for (i in filelist) {
assign(paste("Fekete_",index$year, index$month,
sep=''),read.table(file=i, header=FALSE, sep=" "))
update <- substr(i,35,55) # substring - 2nd argument is character at
which extraction is to begin, 3rd argument is where extraction ends.
print(c("LOADED FILE:",update), quote=FALSE)
}
> ls()
[1] "Fekete_198601" "filelist" "i" "index"
[5] "update"
Why is it that only Fekete_198601 has had data assigned to it (there should be
120 such objects in total) and how do I go about solving this?
Many thanks again for any help offered,
Steve
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