[R] What else do tab-delimited and csv do differently?

Patrick Connolly p.connolly at hortresearch.co.nz
Wed Nov 6 02:51:20 CET 2002

Until recently, I naively believed that a csv was the same as a
tab-delimited file except commas replaced tab characters (provided
of course, the characters being separated weren't either).

Evidently, that is not the case.  I tried reading a tab-delimited file
(created in Excel [2000, W2K] and ftp'd as ASCII to linux) into R 

platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
major    1                
minor    6.1              
year     2002             
month    11               
day      01               
language R   

I've done this sort of thing for years, but probably not with 50
thousand rows, though I've used much bigger text files before.  R just
hung and I had to kill the process.

Saving the file as a csv file instead was much more successful.  In 16
or 17 seconds, my dataframe had been produced with no apparant effort.

Is there a simple explanation?

Patrick Connolly
Mt Albert
New Zealand 
Ph: +64-9 815 4200 x 7188
I have the world`s largest collection of seashells. I keep it on all
the beaches of the world ... Perhaps you`ve seen it.  ---Steven Wright 

The contents of this e-mail are privileged and/or confidential to the
named recipient and are not to be used by any other person and/or
organisation. If you have received this e-mail in error, please notify 
the sender and delete all material pertaining to this e-mail.
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list