Hi!
I was thinking about using the head and tail functions also for files i.e.
show me the first/last few lines of a file. For example:
zz <- file("ex.data", "w") # open an output file connection
cat("TITLE extra line", "2 3 5 7", "", "11 13 17", file = zz, sep = "\n")
cat("One more line\n", file = zz)
close(zz)
readLines("ex.data")
head.character <- function(x, n=6, ...) readLines(con=x, n=n, ...)
head.character("ex.data")
As can be seen, this is essentially a wrapper for readLines, but a handy one.
Of course, S3 "linking" is needed, perhaps also for class "connection".
I am not prefectly satisfied with it as I would like to see printout line by
line.
Any ideas?
--
Lep pozdrav / With regards,
Gregor Gorjanc
----------------------------------------------------------------------
University of Ljubljana PhD student
Biotechnical Faculty www: http://gregor.gorjanc.googlepages.com
Zootechnical Department blog: http://ggorjan.blogspot.com
Groblje 3 mail: gregor.gorjanc <at> bfro.uni-lj.si
SI-1230 Domzale fax: +386 (0)1 72 17 888
Slovenia, Europe tel: +386 (0)1 72 17 861
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