Homework question? This one's pretty easy; see ?regex ?gsub
A couple of examples on gsub()'s help page are rather close to what you need. The basic structure is gsub(<string to replace>, <replacement string>, name_of_string) where the strings are enclosed in quotes. If you need to apply this function to each row of your data frame, see ?apply and put the gsub() code into an anonymous function. Best of luck! Dennis On Sat, May 28, 2011 at 5:54 AM, xiaerwhite <xiaerwh...@hotmail.com> wrote: > the question ask me to use gsub() and subsetting to remove the comma at the > end of the for all but the first value in a data frame. > > the first few lines are like the following: > [1] "2177663,-41,175,2678248,6021224,1840,5,25,17,,,6,," > "2177691,-39.6,176.2,2784798,6173592,1843,7,8,5,30,,7.6,12," > [3] "2177754,-47,166,1977803,5333806,1846,7,13,6,20,,63,," > "2177759,-41,172,2425856,6022664,1846,11,18,19,,,65,," > [5] "2177762,-41,174.5,2636191,6022065,1846,12,4,5,45,,6,," > "2177819,-41.9,173.60001,2559794,5923028,1848,10,15,14,10,,7.4,12," > > this data frame is called the originalQuakes > > thank you for reading this, and please help! > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/remove-at-the-end-of-each-line-for-all-lines-except-the-first-line-in-a-data-frame-tp3557391p3557391.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.
