similar to: Memory in R on windows running 64bit XP

Hi, I'm getting some strange behaviour when trying to use the power operator (a^b) when a is large and b is less than one: big <- .Machine$double.xmax big big^0.5 sqrt(big) > big <- 1.797693134862315708384e+308 > big^0.5 [1] Inf > sqrt(big) [1] 1.340781e+154 I'm guessing that this behaviour is not expected, or am I missing something about ^? Cheers Martyn >

Is it on purpose that `[[` strips the names when used on an atomic vector? > c(a=1, b=2)[1] a 1 > c(a=1, b=2)[[1]] [1] 1 > sessionInfo() R Under development (unstable) (2013-02-11 r61902) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=English_United Kingdom.1252 [2] LC_CTYPE=English_United Kingdom.1252 [3] LC_MONETARY=English_United Kingdom.1252 [4] LC_NUMERIC=C

Related to the following question on Stackoverflow: https://stackoverflow.com/questions/44723690/unexpected-behavior-of-sys-setlocale#44723690 It appears as if Sys.setlocale() does not update LC_TIME correctly for use in date formatting. Although R reports that LC_TIME is changed to the new setting after use of Sys.setlocale(), as.Date() still uses the old settings. The only way to update this is

Dear all, I'm having a problem understanding why a split does not occur with in the 2nd use of the function strsplit below: # text strings > txt <- c("sales to 23 August 2008 published 29 August", + "sales to 6 September 2008 published?11 September") # first use > strsplit(txt, 'published', fixed=TRUE) [[1]] [1] "sales to 23 August 2008 "

Dear R developers, ?help.search ...opens a tab in my browser (Firefox 3.5.6, Win XP): http://127.0.0.1:31642/library/utils/html/help.search.html When I click on the link for "?", (http://127.0.0.1:31642/library/utils/help/?) in the last line of "Details", I get an error message: "Server error: invalid response from R". Similarly, The link to "??"

Dear all, I'm calling Winbugs (1.4.3) through R2WinBugs (2.1-18 coda_0.14-7) to fit a switching random walk model, but come up with an instant trap with the log only displaying 'check('. I will paste the trap with session info below; I'd be very grateful for any ideas. Couple of leads: 1. I presume the problem relates to the r package itself or the way I call bugs(), because I

Dear R-developers, A student asked me today of how to specify the limits of the x-axis. I knew that he should use xlim, but I tried to encourage him to have a try himself with the various help functions. I do not judge if he used the correct search strategy or right key words, but anyway here is what he tried: he looked at ?plot. There xlim is not mentioned. He checked ?par. There you find

Hello All, i was trying to simply run the readHTMLTable on the example published in the package. And on a page I was working on. So running: u = "http://en.wikipedia.org/wiki/List_of_countries_by_population" tables = readHTMLTable(u) returns the following error: Error in tb[["thead"]] : subscript out of bounds looking up this error on the web, didnt give me any hint. Is

Hi, I have the following function that I want to apply to a list of 14 matrices (1536 x 170) of binary data: DRes <- function(x, nr = 10000, metric = "mixed", ...) { require(analogue) require(ade4) m <- c() for (i in 1:nr) { set.seed(i) x1 <- x[, sample(dimnames(x)[[2]], length(x[1,])/2)] x2 <- x[, !dimnames(x)[[2]] %in% dimnames(x1)[[2]]] d1 <-

Hello, I came across a strange behavior of expand.grid (or at least strange to me). For certain values of one of my input variables - created by seq() - I have to use strings (e.g ==".6") to select a row of the object created by expand.grid(), for other values numerical (e.g. ==.8) and for some both work. Please find an example below. #Example x<- seq(0,1,1/10) y <-

A newbie here - please forgive me if this is a basic question. We have an in house package built in R 2.2.1 (yes we're a little behind the times at our firm)and would like to rebuild it using R 2.5.1. However, when I try and build the package from source, I keep getting this error: Error in as(slotVal, slotClass, strict = FALSE) : no method or default for coercing "POSIXt"

Dear R-Help, Is it possible to set R up to run a particular script at specific times of the day? trivial example: If the time is now 8:59:55am and I wish to run a function at 9am, I do the following: my.function <- function(x) { p1 <- proc.time() Sys.sleep(x) print('Hello R-Help!') proc.time() - p1 } my.function (5) [1] "Hello R-Help!" user system

Hi all, I was just radomly playing with R and got the following error when trying to filter a data frame using a string: > Angel <- c(7,8,6,9,10) > Buffy <- c(8,9,4,9,10) > Firefly <- c(9,9,10,10,10) > DrHorrible <- c(10,9,9,10,10) > my.df <- data.frame(Angel, Buffy, Firefly, DrHorrible) > my.df["DrHorrible"] DrHorrible 1 10 2 9 3

Dear R-help, The following code downloads an html document into variable 'doc' and then stores an internal representation into variable 'html.tree'. Even if the html code is malformed, this still works which is fantastic. However, as in the example below, i do get some ouput from R in the console which i would like to suppress somehow, so i can keep my window a bit cleaner. I

Dear all, while preparing some exercises I came across some highly surprising behaviour of file.exists(). The specific value "prn.us.txt" always returns TRUE, even though that file is nowhere to be found on my system. In a fresh R session 3.4.4 installed on Windows 10: > grep("prn.us.txt", dir(recursive = TRUE)) integer(0) > file.exists("prn.us.txt") [1] TRUE

Dear All According to the identify.hclust documentation the function "cuts the tree at the vertical position of the pointer and highlights the cluster containing the horizontal position of the pointer". When I carry out this, the tree isn't cut where I click - in fact, there seems to be a limit below which I cannot go. Consider the following code: mat <- matrix(rnorm(5000),

Hello. I was writing some code that computes on the language and came across this. I can work around it, but thought you might like to know about it. > f <- function(x) { NULL } > a <- as.list(f)[[1]] > a # ie print(a) Error: argument "a" is missing, with no default Note it says *argument* "a", which is strange. In fact, and unsurprisingly, the bug lies with

Hi, I've just downloaded and installed R 2.14.0 using the windows binary on a 64bit windows machine running windows 7. Rterm / RGui work as expected, as does R CMD --help and R CMD BATCH --help however R CMD check --help returns no information and I seem to be unable to check a package. Various other options also seem to not be working as expected, i.e. R CMD REMOVE aa (where aa is

Hello, I have the fellowing problem and I am thankful for any advice! Regards, Samuel ################################################################ >   source("http://bioconductor.org/biocLite.R") BioC_mirror = http://www.bioconductor.org Change using chooseBioCmirror(). >     biocLite("SSPA") Using R version 2.11.0, biocinstall version 2.6.7. Installing

Hi, I have been using 'read.table' regularly to read tab-delimited text files with data. No problem, until now. Now I have a file that appeared to have read fine, and the data inside looks correct (structure etc), except I only had 15000+ rows out of the expected 24000. Using 'readLines' instead, and breaking up the data by tabs, gives me the expected result. I do not