[R] No funtions for character code?

Hello, Do you have a function returns codes of given characters? Best Regards, hyunjo [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

Re: [R] No funtions for character code?

Thnaks a lot! Could you recommend a manual or book or something for string manipulation in R, or give me a direction where I can get a list of string manipulation functions? hyunjo I 2009/10/14 Duncan Murdoch murd...@stats.uwo.ca On 13/10/2009 6:44 PM, You Hyun Jo wrote: Hello, Do you

[R] Is there any performance difference between subset() and list comprehension?

Hello, Suppose that you have a data frame 'df' with variables 'V1', 'V2', 'V3', etc. Is there any (performance) difference (except the difference of the return types) between the following two computations? subset(df, V1 0, V2) and df$V2[df$V1 0] Best Regards, hyunjo

Re: [R] Is there any performance difference between subset() and list comprehension?

2009/9/26 Stefan Grosse singularit...@gmx.net On Sat, 26 Sep 2009 15:26:12 +0900 You Hyun Jo youhyu...@gmail.com wrote: YHJ Is there any (performance) difference (except the difference of YHJ the return types) YHJ between the following two computations? Try it yourself. ?system.time