On Mar 5, 2015 8:32 PM, "Sarah Goslee" <[email protected]> wrote: > > Hi, > > On Thursday, March 5, 2015, JS Huang <[email protected]> wrote: > > > Hi, > > > > There is a lot of if-else statement. r syntax rejects them. Here is an > > example of if-else example. In r we can code *ifelse(x>2,y <- > > 1,ifelse(x>1,y <- 0.5, y <- 0))* for the following. > > > I'm not sure what you are talking about: if-else is a valid construct in R, > and NOT synonymous with ifelse(). > > Your construct below is wrong, though, because the curly brace on a line > alne tells R that you're done. Instead you need > > if(x > 2) { > y <- 1 > } else { > y <- 0 > } > > and these can be nested at will. Note that else is on the same line as the > curly brace ending the if statement. > > http://cran.r-project.org/doc/manuals/R-lang.html#if > > > > > > if (x > 2) > > { > > y = 1 > > } > > else > > { > > if (x > 1) > > { > > y = 0.5 > > } > > else > > { > > y = 0 > > } > > } > > > > > > > > > > ----- > > JS Huang > > -- > > View this message in context: > > http://r.789695.n4.nabble.com/help-on-output-my-own-function-result-in-ddply-tp4704238p4704240.html > > Sent from the R help mailing list archive at Nabble.com. > > > Nabble is not the R help mailing list archive, and if you don't include > context in your post the real R help list will have little idea what you're > talking about.
Yes, it has happened before and is really confusing to the r-help list. It occurs when the original message is posted by a user on Nabble who is not on the r-help list - then that message is held for moderation/discarded. Then another Nabble user, who is on also the r-help list, respond via Nabble and then we only see that reply over here at r-help. Second user who reply is probably unaware of this (though the Nabble interface says "This post has NOT been accepted by the mailing list yet.") and makes it look like s/he is posting random text/code. It would be useful if our mailing list server could filter out/block such threads, but that is probably not that easy to do. Henrik > > > > > > ______________________________________________ > > [email protected] <javascript:;> mailing list -- To UNSUBSCRIBE and > > more, see > > 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. > > > > Instead, you could actually sign up for the mailing list. > > Sarah > > > > -- > Sarah Goslee > http://www.stringpage.com > http://www.sarahgoslee.com > http://www.functionaldiversity.org > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list -- To UNSUBSCRIBE and more, see > 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. [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see 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.
