similar to: An example (was RE: file connection, while, readLines and bro wser)

Dear R-help, I think I have kinda isolated the problem I had to the following: i <- 0 while( {i <- i + 1} < 5) { if(i < 3) next print(i) } This seems to go into an infinite loop. After I break the execution, i has the value 1. At the R prompt, if I start from i <- 0 and keep typing {i <- i + 1} < 5, it eventually evaluate to TRUE. So why does the while loop not work?

Prof. Tierney, Thanks very much for the info. Why does the loop work if I move the assignment out of the condition? E.g., the following works: i <- 0 while(i < 5) { i <- i + 1 if(i < 3) next print(i) } Regards, Andy > -----Original Message----- > From: Luke Tierney [mailto:luke at nokomis.stat.umn.edu] > Sent: Tuesday, October 02, 2001 3:36 PM > To: Liaw, Andy

Dear R-help, I have one more question about the functions mentioned in the subject. Again, the system info is: platform i386-pc-mingw32 arch x86 os Win32 (OK, it's NT4sp6) system x86, Win32 status major 1 minor 3.1 year 2001 month 08 day 31 language R

> From: Robert Gentleman [mailto:rgentlem@jimmy.harvard.edu] > > Greg, > you might be better off writing a wrapper, > > R->foo where foo has less than 65 args and does nothing more than > unpack them and calls bar (the original) with as many args as you > want, not much code change and not much cost... Hi Rob, [BTW, sorry about the crosspost

Just thought I would mention that there is a new O'Reilly book out, "Developing Bioinformatics Computer Skills", which is ok, pretty superficial about some things but at least it lets you know what is happening and where. R gets a few pages in there, 394-396, mostly nice press and accurate except that Bill Venables (hi Bill) may be surprised to find out that he is a member of the

I realize this isn't quite the correct forum (but then I don't think that there is one). Anyways, I've just been given enough money to hire two programmer for at least two years to work on the following project: (for experienced programmers only, please, salary in the 70k range) BRIEF DESCRIPTION FOR JOB POSTING To develop a system for the manipulation and analysis of microarray

Robert Gentleman wrote: > On Tue, Oct 16, 2001 at 04:40:34PM +0100, Rita Ribeiro wrote: > > Hi, > > > > In order to avoid deep copies by passing large arguments to functions or > > > > returning values, I'm trying to do the assignment of variables in a > > given environment. The problem is when I try to assign a structure: a > > list for example.

Dear R helpers, I have a data.frame as given below - dat1 = data.frame(date = as.Date(c("3/30/12","3/29/12","3/28/12","3/27/12","3/26/12", "3/23/12","3/22/12","3/21/12","3/20/12", "3/30/12","3/29/12","3/28/12","3/27/12",

Byron Ellis has been making some progress on a hdf5 library for microarray data (and any other thing you want to put in there). In doing so some issues have arisen that are of more general interest. 1) hdf5 supports annotation (through comments) so it would be nice if the comment function in R became generic. I think this is backward compatible and basically not really an issue of any

-----Original Message----- From: Robert Gentleman [mailto:rgentlem@fhcrc.org] Sent: Wed 10/12/2008 18:47 To: Legaie, Roxane Subject: Re: Kegg.db with GOstats Hi Roxanne, Can you redirect your question to the mailing list. And, you can find the answer in the mailing list archives... best wishes Robert Legaie, Roxane wrote: > Dear Robert Gentleman, > I am currently working on

Dear R helpers   I have some variables say ABC, DEF, PQR, LMN and XYZ. I am choosing any three varaibles at random at a time for my analysis and name these files as input1.csv, input2.csv and input3.csv. So if I choose variables say ABC, DEF and PQR, I am passing the specifications of these variables to input1.csv, input2.csv and input3.csv respectively.   This means in another case even if I

hi there I have a dataframe abc 123 345 abc 345 456 lmn 567 345 hkl 568 535 lmn 096 456 lmn 768 094 i want the uniques of column 1 and there corresponsing column 2 and 3 output abc 123 345 lmn 567 345 hkl 568 535 cbind(DF1[,1],DF1[which(unique(DF1[,1]),c(2,3)]) but didnt work kindly let me know how to go abt it ramya -- View this message in context:

I have a function that fits polynomial models for the orders in n: lmn <- function(d,n){ models=list() for(i in n){ models[[i]]=lm(y~poly(x,i),data=d) } return(models) } My data is: > d=data.frame(x=1:10,y=runif(10)) So first just do it for a cubic: > mmn = lmn(d,3) > predict(mmn[[3]]) 1 2 3 4 5 6 7 8

I am attempting to iterate over a file, processing it line by line. In my function below, I am only getting the first item over and over and over again from my test file rather than subsequent lines. How can I modify this to read lines sequentially? == iteratefile <- function(file) { f.con <- file(file) on.exit(close(f.con)) while( length(readln <- readLines(f.con, 1)) > 0 ) {

Dear R helpers Suppose I have a vector as vect1 = as.character(c("ABC", "XYZ", "LMN", "DEF")) > vect1 [1] "ABC" "XYZ" "LMN" "DEF" I want to reverse the order of this vector as vect2 = c("DEF", "LMN", "XYZ", "ABC") Kindly guide Regards Vincy [[alternative HTML

----- Forwarded message from Stelios Zimeras <szimeras at irisa.fr> ----- Date: Wed, 20 Oct 1999 11:35:52 +0200 From: Stelios Zimeras <szimeras at irisa.fr> Organization: IRISA, Campus de Beaulieu, 35042 Rennes Cedex, FRANCE X-Mailer: Mozilla 4.7 [en] (X11; I; SunOS 5.5 sun4m) X-Accept-Language: en To: rgentlem at stat.auckland.ac.nz Subject: R installation problem Dear Sir, I try

The following appears to be a bug in 0.90 > x<-sample(10,1:4,rep=T) > x [1] 8 > ?sample > x<-sample(10,1:4,rep=T) > x [1] 5 Of course, I forgot the syntax but I still don't like the result. -- +-------------------------------------------------------------------------+ | Robert Gentleman voice: (617) 632-5045 | | Senior Lecturer

Hi Everyone, I'm wondering if anyone here write AGI's in compiled binaries. I'm writing a small Cepstral AGI in Freepascal/Lazarus. I know there are some other AGI's out there, but I wanted to add some more functionality than what is available such as having the AGI determine if the "data" argument is plain text or a path to a text file and act accordingly. The

hi there, I have a list of list objects i need to remove the top layer [[1]] [1].0 "ABC" "DEF""LMN" [1].1 "WER" "ERT" "TRY" [[2]] [2].0 "ASD","wer""qwe" [2].1 "wdv""ghj""ggj" I wanna avoid the top layer...that is [[1]] [[2]] shouldnt be there just a simple list is wat i need.

Hi. Robert Gentleman's solution works. Thanks. This seems to be a documentation bug; I will submit a separate report to the bug list for completeness. Matt On Sat, 19 Feb 2000, Robert Gentleman wrote: > On Fri, Feb 18, 2000 at 02:32:54PM -0500, Matthew Wiener wrote: > > Hi, all. > > > > Using the patched version of R-0.99.0, I cannot reproduce the following >