Another situation would be if you have comment characters in strings that are intended to be content.
On Thu, Jul 23, 2009 at 5:35 PM, Greg Snow<greg.s...@imail.org> wrote: > Some programs quote everything to be "safe", others only quote when needed. > The only case that I know of that read.table and friends require quotes for > is when a separator is inside of a string, for example if you are using > spaces as the separator and have some names with spaces in them (e.g. "North > Dakota"), without the quotes that would be seen as 2 fields, with the quotes > it is a single field. If the coma (,) is the separator and you have names > (e.g. "Snow, Greg") then you would need the quotes. If you don't have any > cases of the separators other than where they are separating fields, then the > quotes are probably not needed. > > Hope this helps, > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > >> -----Original Message----- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- >> project.org] On Behalf Of Rnewbie >> Sent: Thursday, July 23, 2009 11:02 AM >> To: r-help@r-project.org >> Subject: Re: [R] rows missing after dataset loaded to R >> >> >> Thank you very much for the reply. I checked the rows and it was the >> unbalanced " quote marks in some of the rows that caused the problem. >> Once I >> disabled quoting altogether, the problem is solved. >> >> I have one more basic question. I disabled quoting when loading the >> file to >> R, and all the columns consisting of characters with or without >> quotation >> marks displayed normally. What does quoting actually do in R? >> >> -- >> View this message in context: http://www.nabble.com/rows-missing-after- >> dataset-loaded-to-R-tp24625882p24630154.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. > ______________________________________________ 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.
