similar to: how to order each element according to alphabet

With this example set.seed(123) A <- matrix(runif(40), nrow = 8) y <- 1:nrow(A) A.laqr <- qr(A, LAPACK=TRUE) both qr.qy(A.laqr,y) and qr.qty(A.laqr,y) give the respective error messages Error in qr.qy(A.laqr, y) : 'b' must be a numeric matrix Error in qr.qty(A.laqr, y) : 'b' must be a numeric matrix However when Lapack is not used as in A.liqr <- qr(A,

Dear all (copying the package author), I have a question on the vlmc package. I am trying to model a time series, where each element can take one of 11 values (the result of some clustering). When I run the following command (synthetic data to facilitate self-contained example) I get the following warning: ("alphabet with >1-letter strings; trying to abbreviate") +++ START+++ >

Hola, I've done everything as correct as I can see in smb.conf under fresh ubuntu 6.06 fully updated install to have it run as a PDC on hostname florentine, domain DAVEYST. There are no testparm errors. I've added users with useradd and smbpasswd -a I've added machines with useradd and smbpasswd -a -m I can see the server in my network neighbourhood and access/browse folders on

I am running Samba 4.1.4 on Centos 6.5. All documentation that I can access suggest that an uppercase letter is mandatory for the domain administrator. I would like to make this (at least 1 uppercase alphabet) mandatory for ALL users. Is there a way to do it? Best Regards, Dipan

Hi, I've got two suggestions how to speed up median() about 50%. For all iterative methods calling median() in the loops this has a major impact. The second suggestion will apply to other methods too. This is what the functions look like today: > median function (x, na.rm = FALSE) { if (is.factor(x) || mode(x) != "numeric") stop("need numeric data")

This patch adds some queue limit parameters into block drive. And inits them for sg block drive. Some interfaces are also added for accessing them. Signed-off-by: Cong Meng <mc at linux.vnet.ibm.com> --- block/raw-posix.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++ block_int.h | 4 +++ blockdev.c | 15 +++++++++++++ hw/block-common.h | 3 ++ 4 files

This patch adds some queue limit parameters into block drive. And inits them for sg block drive. Some interfaces are also added for accessing them. Signed-off-by: Cong Meng <mc at linux.vnet.ibm.com> --- block/raw-posix.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++ block_int.h | 4 +++ blockdev.c | 15 +++++++++++++ hw/block-common.h | 3 ++ 4 files

Hi, S4 method dispatch can be very slow. Would it be reasonable to cache the most recent dispatch, anticipating the next invocation will be on the same type? This would be very helpful in loops. fun0 <- function(x) sapply(x, paste, collapse="+") fun1 <- function(x) { paste <- selectMethod(paste, class(x[[1]])) sapply(x, paste,

Hi guys, I've brand new to the R scene. I have hundreds of csv files that has field 1 ,YYYY/MM/DD as index How to generate a graph of distribution and calculate the standard deviation of field2 for all of the files in a directory? I'm wondering if R could do this. Thanks a lot. -- View this message in context: http://www.nabble.com/Newbie%27s-question-tf3730746.html#a10442845 Sent from

I am trying to read the rsync man page. What do the acronyms "CW", ?lq+rq?, and ?lq-rq? mean? The "Usage" section uses ?CWrsync?. The ?Filter Rules? section says: If a pattern does not begin with lq- rq (dash, space) or lq+ rq (plus, space), then the rule will be interpreted as if lq+ rq (for an include option) or lq- rq (for an exclude option) were prefixed to the string.

>>>>> Winston Chang <winstonchang1 at gmail.com> >>>>> on Fri, 23 Jan 2015 10:15:53 -0600 writes: > I think you can simplify a little by replacing this: > pkg %in% loadedNamespaces() > with this: > .getNamespace(pkg) almost: It would be !is.null(.getNamespace(pkg)) > Whereas getNamespace(pkg) will load the

(Apologies if this is better suited for R-help.) On my system (macOS Sierra, late 2014 MacBook Pro; R 3.4.1, Homebrew build), I found that it is faster to construct a function using eval(call("function", ...)) than using as.function(list(...)). Example: make_fn_1 <- function(a, b) eval(call("function", a, b), env = parent.frame()) make_fn_2 <- function(a, b)

Hi guys, I am working on some code for automatically translating recursive functions into looping functions to implemented tail-recursion optimisations. See https://github.com/mailund/tailr As a toy-example, consider the factorial function factorial <- function(n, acc = 1) { if (n <= 1) acc else factorial(n - 1, acc * n) } I can automatically translate this into the loop-version

When I use the function cancor of mva package, I found that it doesn't work when one of the matrix has only one column, or both have only one column. The function in Splus 5 with the same name works under those situations. The version of R I am using is 0.63.2 (released on Jan., 1999) on Solaris. Kenny Ye Assistant Professor Department of Applied Math and Statistics SUNY at Stony Brook

While working with sapply, the documentation states that the simplify argument will yield a vector, matrix etc "when possible". I was curious how the code actually defined "as possible" and see this within the function if (!identical(simplify, FALSE) && length(answer)) This seems superfluous to me, in particular this part: !identical(simplify, FALSE) The preceding

hi, is there any wait function in R. I am running one R script to plot many graphs it is in the for loop. its showing no error but its not plotting well I think i can solve this problem with a wait function. Please help me in this regards. If u need any clarification about programme. u can find the script below. best regards, Deepak.M.R Biocomputing Group University of Bologana. #!/usr/bin/R

Interestingly, the <<- operator is also a lot faster than using a namespace explicitly, and only slightly slower than using <- with local variables, see below. But, surely, both must at some point insert values in a given environment ? either the local one, for <-, or an enclosing one, for <<- ? so I guess I am asking if there is a more low-level assignment operation I can get my

I'm exploring latency overhead of parallel PSOCK workers and noticed that serializing/unserializing data back to the main R session is significantly slower on Linux than it is on Windows/MacOS with similar hardware. Is there a reason for this difference and is there a way to avoid the apparent additional Linux overhead? I attempted to isolate the behavior with a test that simply returns

Dear all, I am trying to benchmark code that occasionally prints on the screen and I want to suppress the printing. Is there an idiom for this? If I do sink(tempfile) microbenchmark(...) sink() then I'll be also measuring the costs of writing to tempfile. I could also sink to /dev/null, which is probably fast, but that is not portable. Is there a better solution? Is writing to a

Hello all: I have a protein sequence alignment in a data frame (align1, 72 x 236), where each row is a protein and each column a site in the alignment. AA is vector of amino acid symbols plus "-" (gap). I can calculate amino acid frequencies at each site by: >align1.F <- matrix(0,nrow=22,ncol=236,dimnames=list(AA,seq(1:236))) >for(i in 1:236) >