On 11/04/2009 09:03 PM, Sybille Wendel (Udata) wrote:
...
That is, that every 4 digits there is a new number, but when the
number is > 999, R thinks of course that the number consists of more
than 4 digits. So, R can't read in the table.
Is there a way I can tell R, that every 4 digits, a new number begins?
I treif different things with "sep".
data <- read.table ("RA19930101.txt",header=F,sep=)
Hi Sybille,
It looks to me as though you have a ragged matrix of values with a 3
character field and then a varying number of 4 character fields. Here is
a rather messy pair of functions that I think do what you want.
split34<-function(x) {
# split the input string into single characters
xsplit<-strsplit(x,"")
lenx<-length(xsplit[[1]])
newx<-paste(xsplit[[1]][1:3],sep="",collapse="")
for(val in seq(4,lenx,by=4))
newx<-c(newx,paste(xsplit[[1]][val:(val+3)],sep="",collapse=""))
return(newx)
}
read.dat34<-function(file=NA) {
input_strings<-scan(file,"",sep="\n")
datalist<-vector("list",length(input_strings))
for(elem in 1:length(input_strings))
datalist[[elem]]<-split34(input_strings[elem])
return(datalist)
}
read.dat34("RA19930101.txt")
Jim
______________________________________________
R-help@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.
