Message-ID: <Pine.LNX.4.33.0110171347210.1323-100000@mulligan.atm.ox.ac.uk>
Date: 2001-10-17T12:52:42Z
From: Randall Skelton
Subject: File reading.
In-Reply-To: <Pine.LNX.4.21.0110171349320.14209-100000@reclus.nhh.no>
Indeed it was the 'file' command that I was missing. Passing this object
through to 'scan' does what I was looking for.
> a<-file("Xtemp", "r", blocking = TRUE)
> b<-scan(a, what=list(nx=0, ny=0), n=2)
Read 1 records
> c<-scan(a, what=list(xlab=0), n=b$nx)
Read 39 records
The 'scan' documentation doesn't really explain this very well...
| scan(file = "", what = double(0), nmax = -1, n = -1, sep = "",
| quote = if (sep=="\n") "" else "'\"", dec = ".",
| skip = 0, nlines = 0, na.strings = "NA",
| flush = FALSE, fill = FALSE, strip.white = FALSE, quiet = FALSE,
| blank.lines.skip = TRUE, multi.line = TRUE)
Thanks!
Randall
On Wed, 17 Oct 2001, Roger Bivand wrote:
> Maybe try file(), open(), and readLines(), see Brian Ripley's introduction
> to using connections in R-News number 1, pages 16-17.
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