Hello,
Use readLines instead.
?readLines # see argument 'n'
readLines("http://www.epa.gov/emap/html/data/surfwatr/data/mastreams/9396/wchem/chmval.txt";,
n = 5)[5]
Hope this helps,
Rui Barradas
Em 31-10-2012 16:46, chuck.01 escreveu:
Hello,
Here is a link to some data:
http://www.epa.gov/emap/html/data/surfwatr/data/mastreams/9396/wchem/chmval.txt
I am trying to read this in, and want to use:
chmval <-
read.table("http://www.epa.gov/emap/html/data/surfwatr/data/mastreams/9396/wchem/chmval.txt";,
sep=",", skip= 84, header=T)
the # 84, for 84 lines skipped needs to be derived from the 5th line of the
txt file
# Header Records: 85
so, I need that # (-1) for input into the read.table statement above
I've tried grep but that didn't work:
(for this I downloaded the txt file and manually removed that hash mark!)
grep("Header Records:", read.table("chmval.txt", header=T))
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings,
:
line 1 did not have 5 elements
Any ideas?
Can I just extract the 5th line?
--
View this message in context:
http://r.789695.n4.nabble.com/extracting-information-from-txt-file-tp4648033.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
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.
______________________________________________
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.
