similar to: "Roxygenating" packages

Dear Barry, In general, I believe users are already accustomed with the classical arrows "->" and "<-" which are used as such in quoted expressions. But I agree that "-.>" is a very neat trick, thanks a lot. A small dot, what a difference. All the best, Dmitri On Mon, Mar 4, 2024 at 11:40?AM Barry Rowlingson < b.rowlingson at lancaster.ac.uk> wrote:

It seems like you want to use -> and <- as arrows with different meanings to "A gets the value of B" in your package, as a means of writing expressions in your package language. Another possibility would be to use different symbols instead of the problematic -> and <-, for example you could use <.~ and ~.> which are not at all flipped or changed before you get a chance

Maybe someone has already suggested this, but if your functions accepted strings you could use sub or gsub to replace the -> with a symbol that parsed at the same precedence as <-, say <<-. Then parse it and deal with it. When it is time to display the parsed and perhaps manipulated formulae to the user, deparse it and do the reverse replacement. > encode <-

On Mon, Feb 29, 2016 at 6:17 PM, John Chambers <jmc at r-project.org> wrote: > The Wikipedia statement may be a bit misleading. > > S was never open source. Source versions would only have been available with a nondisclosure agreement, and relatively few copies would have been distributed in source. There was a small but valuable "beta test" network, mainly university

On Thu, Jul 26, 2018 at 12:22 AM, G?bor Cs?rdi <csardi.gabor at gmail.com> wrote: > I am trying to control a background R session, connected via a fifo / > named pipe. Is the fifo significant here? If I read the same R code from a file via `<` I get the input echoed (R 3.4.4, Ubuntu). Barry

I don't think anyone denies that you *could* make an EXE to do all that. The discussion is on *how easy* it should be to create a single file that contains an initial "main" function plus a set of bundled code (potentially as a package) and which when run will install its package code (which is contained in itself, its not in a repo), install dependencies, and run the main()

A colleague is receiving some data from another person. That person reads the data in SAS and it takes 30s and uses 64k RAM. That person then tries to read the data in R and it takes 10 minutes and uses a gigabyte of RAM. Person then goes on to say: It's not that I think SAS is such great software, it's not. But I really hate badly designed software. R is designed by

On Thu, 26 Jul 2018, G?bor Cs?rdi wrote: > On Thu, Jul 26, 2018 at 12:25 PM Barry Rowlingson > <b.rowlingson at lancaster.ac.uk> wrote: >> >> On Thu, Jul 26, 2018 at 12:22 AM, G?bor Cs?rdi <csardi.gabor at gmail.com> wrote: >>> I am trying to control a background R session, connected via a fifo / >>> named pipe. >> >> Is the fifo

If you index a vector with a vector that has NA in it, you get NA back: > x=101:107 > x[c(NA,4,NA)] [1] NA 104 NA > x[c(4,NA)] [1] 104 NA All well and good. ?"[" says, under NAs in indexing: When extracting, a numerical, logical or character ?NA? index picks an unknown element and so returns ?NA? in the corresponding element of a logical, integer,

I see some value in Duncan?s proposal to implement this as an extra package instead of a change to base R, if only to see if the idea has legs. I?m minded to do so myself using your suggestion, but is there a particular reason why you recommend using the remotes package instead of devtools? The latter seems to have the same functions I would need, and I believe it is more widely installed that

Full_Name: Barry Rowlingson Version: 1.6.0 OS: RH8 i386 Submission from: (NULL) (148.88.136.205) Strange things happen if I premultiply a difftime() object with a number. Example: > d1 <- difftime(Sys.time(),Sys.time()) > d2 <- 1 * difftime(Sys.time(),Sys.time()) > d3 <- difftime(Sys.time(),Sys.time()) * 1 > d1 Time difference of 0 secs - thats fine > d2 [1] 0

I'm often wanting to develop functions whilst manipulating data. But I don't want to end up with a .RData full of functions and data. It might be that I have functions that are re-usable but not worth sticking in a package. So I've tried to come up with a paradigm for function development that more closely follows the way Matlab and Python do it (partly inspired by a confused Matlab

A little while ago here we had a short discussion about Task Views - I think ignited by someone saying 'how many times do I have to say "have you read the Optimisation Task View?"?' and I poured some fuel on that fire by saying "Task Views" was a stupid name. Anyway, I did say that Task Views were rather brilliant, but were let down by their hidden position on the R

In response to an earlier discussion about finding the fastest/best/nearest CRAN site, I geocoded (using my geonames package) the locations of the CRAN sites returned by getCRANmirrors. I've mapped them here: http://www.maths.lancs.ac.uk/~rowlings/R/Cranography/ The geocoding may have got it wrong, so if CRAN site maintainers want to send me a real lat-long (in WGS 84 aka EPSG:4326) I'll

Hi folks, OS - Ubuntu 10.04 On R I create a datafile named "data". I can evoke it on R with; > data On R Commander Data -> Active data set -> Select active data set -> (data) OK only one data set there "data" -> View data set I can read it -> Edit data set showing 25 rows of data. Clicking the box shows a thick border around it. But I couldn't

On Mon, Sep 17, 2018 at 5:22 PM, G?bor Cs?rdi <csardi.gabor at gmail.com> wrote: > I would say it is a mis-feature. If the 'x' argument of diag() is a > vector of length 1, then it creates an identity matrix of that size, > instead of creating a 1x1 matrix with the given value: > > ? diag(3) > [,1] [,2] [,3] > [1,] 1 0 0 > [2,] 0 1 0

How do people go about synchronizing multiple workspaces on different workstations? I tend to wind up with projects spread around the various machines I work on. I find that placing the directories on a server and reading them remotely tends to slow things down. thanks, Eric -- Eric Turkheimer, PhD Department of Psychology University of Virginia PO Box 400400 Charlottesville, VA 22904-4400

Hello there fellow R-users, I have received some data which comes in the following format: example1<-"200301" The first 4 digits correspond to the year and the remaining 2 digits correspond to the week of the year. I have tried to convert this to a date by using strptime as follows: strptime(example1,format="%Y%U") where U (looking up strptime) is the week of the

On Mon, Mar 8, 2010 at 8:46 PM, Barry Rowlingson <b.rowlingson at lancaster.ac.uk> wrote: > On Mon, Mar 8, 2010 at 6:44 PM, Ma Ismail - NewYork-MEAG-NY > <ima at meag-ny.com> wrote: >> Hi, >> >> A few of the developers on our Quant team are using R for data calculation and to generate a [snip] > ?I've noticed a lot of financial corporates getting into R

dear users, we have got the following question: we have got a text-file looking like this: ... <trkpt lat="48.272000" lon="16.342984"> <ele>387</ele> <time>2012-01-01T15:32:03Z</time> <sat>9</sat> </trkpt> <trkpt lat="48.271909" lon="16.343563"> <ele>381</ele>