Re: [R] reading row vectors from file

From: Gabor Grothendieck <ggrothendieck_at_myway.com>
Date: Fri 04 Mar 2005 - 08:30:39 EST

Ken Irving <fnkci <at> uaf.edu> writes:

:
: Hi,
:
: New to R, using version 2.0.1 (2004-11-15) on debian Linux (sid), kernel
: 2.6.8-2-686.
:
: I have data in files with separate vectors on each row of the file,
: e.g.,
:
: $ cat /tmp/stats
: freq,0,1,2,3,4,5,6,7,8,9,16,17,18,19,20,...
: noise,49,47,48,48,50,47,48,47,46,50,48,54,49,47,49,...
: signal,99,0,100,0,0,100,0,100,100,0,100,101,100,0,0,...
: pctrcv,5,0,5,0,0,5,0,5,11,0,5,5,5,0,0,...
:
: I can transpose the data file (e.g., using an awk script), and then read
: it using read.csv("tstats"),
:
: $ transpose /tmp/stats > /tmp/tstats
: $ cat /tmp/tstats
: freq,noise,signal,pctrcv
: 0,49,99,5
: 1,47,0,0
: 2,48,100,5
: ...
:
: but would prefer to import the line-oriented files directly. I've
: drawn a blank after perusing help, documentation, google searches, etc..
:
: Something like read.csv( "transpose stat |" ) might be nice, e.g., the
: trailing pipe symbol invokes the argument as a shell pipeline, then
: reads from stdin, but I'm just making this up... Actually, this does
: work:
:
: t <- read.csv( pipe("transpose stat1") )
:
: but it does rely on an external transpose command. Is there a way to
: read line-oriented vector files directly?
:

for(v in strsplit(readLines(myfile), ",")) assign(v[[1]], as.numeric(v[-1]))



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