[R] reading row vectors from file

[Gabor Grothendieck]

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]))