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...d] multi.line=FALSE does not work in scan() (PR#1210) It *does* work quite correctly: this was an erroneous file nd you got an error, just one you didn't understand. Please don't use grossly misleading subject lines: they are all that appear in the BUGS file. On Tue, 11 Dec 2001 vograno@arbitrade.com wrote: > The following applies to scan function called with multi.line=FALSE and > what=list(...). > > If 'what' has more members than the number of columns in the file scan() > keeps reading from the next line of the file despite multi.line=FALSE. Here > is a transc...

system(..., intern=TRUE) splits long lines after 118th character and discards the 119th character > a <- paste(rep("a", 124), collapse="") > system(paste("echo", a), intern=TRUE) system(paste("echo", a), intern=TRUE) [1] "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Dear R-Users, I have a data file with timestamps and I wanted to use POSIXct time data type to represent the respective column. I played around with the type and found a couple of issues: * there seems to be no direct way of reading datetimes into a variable. Let's say this is my file "1992-02-27 23:03:20 PST" "1992-02-27 22:29:56 PST" "1992-01-14 01:03:30 PST"

Hi, This is not an R question per ce, but I feel like this is a right community to ask it. As a part of our work we run a lot of non-interactive computational jobs. To increase the throughput we would like to distribute the load over the entire network and we are looking at Linux network as a platform. Ideally we would like to be able to submit a job to the network, rather than to a computer, and

Dear R-Users, I have a csv file that has NA tokens and these tokens are perfectly good values that need not to be converted to NA by read.table(). I tried to prevent the conversion by specifying the na.strings arg., but this seems to only add to the list of NA strings, not substitute. > system("cat foo") system("cat foo") 1 foo 2 NA > read.table("foo",

Full_Name: Vadim Ogranovich Version: Version 1.6.0 (2002-10-01) OS: Red Hat 7.1 Submission from: (NULL) (209.99.241.1) The following sequence of commands crashes my R session. The first weirdness happens after the second command that appears not to change the "foo.gz" file, no error generated. > con <- gzfile("foo.gz", open="w"); cat("goo\n",

Dear R-Users, It seems like once one invokes browser() inside a loop and steps through the body using 'n' any subsequent loop will be "intercepted" by debug() function. Here is exactly what I mean # fresh R session # run a loop that has browser() inside the body > for (i in seq(5)) { browser(); print(i) } for (i in seq(5)) { browser(); print(i) } Called from: NULL

Dear R-Users, I am reading the "An Introduction to R" manual and have come across data() function for loading data. I assume that R requires explicit loading of data objects to save memory. Then I'd expect there should be a function that can unload the objects once they are not needed anymore, what is this function? It would be helpful if ?data contained a reference to that

Dear R users, I am looking for a reference to an algorithm for estimation of sample quantiles which does not require bringing the whole data into memory (more precisely its memory complexity should be much less than linear, ideally constant). I realize that such an algorithm can only be approximate and actually quite wrong for some samples, but that's fine with me. Thank you, Vadim

An embedded message was scrubbed... From: Douglas Bates <bates at stat.wisc.edu> Subject: Re: [R] Are you experienced in SAS and R as well? Which of these would you recommend me? Date: 23 Nov 2001 15:16:59 -0600 Size: 4446 Url: https://stat.ethz.ch/pipermail/r-help/attachments/20011123/8d0399f0/attachment.mht

Dear R-Users, I have the following problem to solve and I wonder if there are means in R that can help me. At irregular time intervals I observe a random walk process, Y, with time-varying drift. I assume that the drift, D, is a (linear) function of some parameter X. The goal is to estimate D(X). I could regress Y_{t+dt} - Y_{t} ~ X, but it's probably not appropriate since Var(Y_{t+dt} -

...-0400 --see also PR#1075 * PR# 1076 * Subject: Re: [Rd] Wierd problem comparing numeric values and list using == From: John Chambers <jmc@research.bell-labs.com> Date: Mon, 27 Aug 2001 08:44:22 -0400 --part of PR#1073 * PR# 1186 * Subject: a patch to tapply From: Vadim Ogranovich <vograno@arbitrade.com> Date: Thu, 29 Nov 2001 14:48:35 -0600 * PR# 1193 * Subject: Re: [R] appending similar data frames? From: Thomas Lumley <tlumley@u.washington.edu> Date: Mon, 3 Dec 2001 13:46:35 -0800 (PST) * PR# 1214 * Subject: syntax questtion, maybe a bug From: Rich Heiberger <rmh@surfer.sbm.tem...

...-0400 --see also PR#1075 * PR# 1076 * Subject: Re: [Rd] Wierd problem comparing numeric values and list using == From: John Chambers <jmc@research.bell-labs.com> Date: Mon, 27 Aug 2001 08:44:22 -0400 --part of PR#1073 * PR# 1186 * Subject: a patch to tapply From: Vadim Ogranovich <vograno@arbitrade.com> Date: Thu, 29 Nov 2001 14:48:35 -0600 * PR# 1214 * Subject: syntax questtion, maybe a bug From: Rich Heiberger <rmh@surfer.sbm.temple.edu> Date: Thu, 13 Dec 2001 13:46:54 -0500 (EST) --Is .2logl meant to be a valid name in R? It is S * PR# 1241 * Subject: Problem with "missing&...

...-0400 --see also PR#1075 * PR# 1076 * Subject: Re: [Rd] Wierd problem comparing numeric values and list using == From: John Chambers <jmc@research.bell-labs.com> Date: Mon, 27 Aug 2001 08:44:22 -0400 --part of PR#1073 * PR# 1186 * Subject: a patch to tapply From: Vadim Ogranovich <vograno@arbitrade.com> Date: Thu, 29 Nov 2001 14:48:35 -0600 * PR# 1214 * Subject: syntax questtion, maybe a bug From: Rich Heiberger <rmh@surfer.sbm.temple.edu> Date: Thu, 13 Dec 2001 13:46:54 -0500 (EST) --Is .2logl meant to be a valid name in R? It is S * PR# 1241 * Subject: Problem with "missing&...

...-0400 --see also PR#1075 * PR# 1076 * Subject: Re: [Rd] Wierd problem comparing numeric values and list using == From: John Chambers <jmc@research.bell-labs.com> Date: Mon, 27 Aug 2001 08:44:22 -0400 --part of PR#1073 * PR# 1186 * Subject: a patch to tapply From: Vadim Ogranovich <vograno@arbitrade.com> Date: Thu, 29 Nov 2001 14:48:35 -0600 * PR# 1214 * Subject: syntax questtion, maybe a bug From: Rich Heiberger <rmh@surfer.sbm.temple.edu> Date: Thu, 13 Dec 2001 13:46:54 -0500 (EST) --Is .2logl meant to be a valid name in R? It is S * PR# 1241 * Subject: Problem with "missing&...

Hi, I tried to read in a big table (1.4M rows, 4 fields each) using read.table() and ran out of 'cons' memory with the following message: Error: cons memory (2800000 cells) exhausted Could someone please explain how to guess required nsize? My understanding of help(Memory) is that 'cons' memory should not be a limitation unless you create many "language" objects.

Hi, I (will) have R and Oracle running on Sun Solaris. I'd like to use RODBC package to communicate from R to the database. Could someone please recommended an Oracle ODBC driver and a manager for Suns? Has anyone had an experience of doing this sort of staff (RODBC --> Oracle on Suns)? Is it reliable? Thanks, Vadim

Dear R-Users, Does anyone know how to flatten, i.e. convert to a table, a return value of tapply when its INDEX argument is a list? Here is an example of what I need > x <- rnorm(100) > f1 <- rep(c(T,F),50) > f2 <- c(rep(T,50), rep(F,50)) > y <- tapply(x, list(f1=f1,f2=f2), summary) > y f2 f1 FALSE TRUE FALSE "Numeric,6"

Hi, When a single column is subscripted from a data frame it doesn't inherit the row names of the data frame. I find it surprising given the extent to which R tries to carry names across computations. Is there a good reason for this? Here is what I mean in details: > y <- data.frame(a=c(1,2), b=c(1,2), row.names=c("x","y")) y <- data.frame(a=c(1,2), b=c(1,2),

Dear R-Users, I am looking for a help to deal with the following computational problem: I have a mapping f(x, y) -> (u, v) of [0,1]*[0,1] -> R^2. The mapping is given by tabulating f(x,y) on a uniform 2D grid and is assumed to be "interpolatable" in between the grid points (the number of points on each dimension is rather small, say 5). My ultimate goal is to numerically maximize