similar to: Why is there no within.environment function?

Great spot, thanks Mark. This really ought to appear somewhere in the ?Quotes help page. Having a warning under Windows might be nicer behaviour than silently returning the wrong value too. On 4 December 2014 at 22:24, Mark van der Loo <mark.vanderloo at gmail.com> wrote: > Richie, > > The R language definition [1] says (10.3.1): > > \Unnnnnnnn \U{nnnnnnnn} > (where

Here's a data frame with some Unicode symbols (set intersection and union). d <- data.frame(x = "A \u222a B \u2229 C") Printing this data frame under R 3.2.0 patched (r68378) and Windows 7, I see d ## x ## 1 A <U+222A> B n C Printing the column itself works fine. d$x ## [1] A ? B ? C ## Levels: A ? B ? C The encoding is correctly UTF-8.

I've just been trying to post-process some R-created heatmaps using Inkscape, but I can't get them to display correctly in that software. To reproduce: library(grid) r <- as.raster(matrix(runif(25), 5, 5)) pdf("test.pdf") grid.newpage() grid.raster(r, interpolate = FALSE) dev.off() This figure should be a five by five block of grey squares. This is what I see in the R GUI

>From the Details section of ?capture.output: Messages sent to stderr() (including those from message, warning and stop) are captured by type = "message". Note that this can be "unsafe" and should only be used with care. Capturing messages works as expected: capture.output(message("!!!"), type = "message") ## [1] "!!!" Capturing warnings

On 25/05/2015 11:37 AM, Ista Zahn wrote: > AFAIK this is the way it works on Windows. It has been discussed in several > places, e.g. > http://stackoverflow.com/questions/17715956/why-do-some-unicode-characters-display-in-matrices-but-not-data-frames-in-r > , > http://stackoverflow.com/questions/17715956/why-do-some-unicode-characters-display-in-matrices-but-not-data-frames-in-r

If I want to use with inside a loop, it seems that next gets confused. To reproduce: for(lst in list(list(a = 1), list(a = 2), list(a = 3))) { with(lst, if(a == 2) next else print(a)) } I expect 1 and 3 to be printed, but I see [1] 1 Error in eval(expr, envir, enclos) : no loop for break/next, jumping to top level Is this a) by design, or b) a bug, or c) a thing that is rare enough that I

If I type a character using \U syntax that has more than 4 digits, I get the wrong character. For example, "\U1d4d0" should print a mathematical bold script capital A. See http://www.fileformat.info/info/unicode/char/1d4d0/index.htm On my machine, it prints the Hangul character corresponding to "\Ud4d0" http://www.fileformat.info/info/unicode/char/d4d0/index.htm It seems

Is there a complete list somewhere of the possible values for R's status, as returned by version$status? I know about these values: Stable: "" Devel: "Under development (unstable)" Patched: "Patched" Release candidate: "RC" Alpha: "Alpha" Are there any others that I've missed?

I recently tried to submit a package to CRAN using the release function in the devtools package and got the response: > The policies asked you to use the webform: do so in future. I think that the relevant line in the policies are: > When submitting a package to CRAN you should use the submission form at > http://CRAN.R-project.org/submit.html (and not send an email). You will be sent

If you set the "digits17" control option in deparse, you get a lot of unnecessary space in the representation of complex numbers. > deparse(0 + 0i) [1] "0+0i" > deparse(0 + 0i, control = "digits17") [1] "0 + 0i" As far as I can tell, the logic for this comes from this piece of /src/main/deparse.c: if (TYPEOF(vector) == CPLXSXP

> From: Richard Cotton <richierocks at gmail.com> > > The rep function is very versatile, but that versatility comes at a > cost: it takes a bit of effort to learn (and remember) its syntax. > This is a problem, since rep is one of the first functions many > beginners will come across. Of the three main uses of rep, two have > simpler alternatives. > > rep(x,

Hi, at the R prompt, is it possible to retrieve the last error (as in condition object of class "error")? I'm not asking for geterrmessage(), which only returns the error message (as a character string). I'm basically looking for a .Last.error or .Last.condition, analogously to .Last.value for values, which can be used when it is "too late" (not possible) to go back

I'm having an issue with occasionally slow-running calls to normalizePath. If the path is a non-existent UNC path, then normalizePath sometimes takes 6 or 7 seconds to run, rather than its usual few microseconds. My big problem is that I can't reliably reproduce this across machines. The example below generates one or two slow runs out of 10000 on my Windows machine. I haven't been

Today while running update.packages(ask = FALSE), R stopped to ask me a question: There are binary versions available but the source versions are later: binary source needs_compilation KernSmooth 2.23-13 2.23-14 TRUE mixture 1.2 1.3 TRUE Do you want to install from sources the packages which need compilation? y/n: update.packages calls

Dear expeRts, I would like to use expression() for creating labels in a splom, as shown in the first minimal example below. Is there any way I can simplify having to write "expression(italic(...))" several times? The second example is what I tried so far, but I can't manage to get italic() to work. Moreover, it still seems bulky... Cheers, Marius ## minimal example (working but

The first component name has backticks around it and the second does not. Though not wrong, it seems inconsistent. list(a = 1, b = 2) ## $`a` ## [1] 1 ## ## $b ## [1] 2 R.version.string ## [1] "R version 3.5.1 Patched (2018-07-02 r74950)" -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com

> grep("f[0-9]+=", "f1=5,f22=3,", value = T) [1] "f1=5,f22=3," How do I make the line output c("f1", "f22") instead? (Actually, c(1,22) would be even better). Thank you. -- View this message in context: http://r.789695.n4.nabble.com/Quick-GREP-challenge-tp2339486p2339486.html Sent from the R help mailing list archive at Nabble.com.

Hi, I've just created: newEnvEval <- function(..., hash=FALSE, parent=parent.frame(), size=29L) { envir <- new.env(hash=hash, parent=parent, size=size); evalq(..., envir=envir); envir; } # newEnvEval() so that I can create an environment and assign objects to it in one go, e.g. env <- newEnvEval({ a <- 1; b <- 2; }); print(env$a); Does this already exists somewhere?

Hi there, Ive tried trawling the lists for a solution but I could not find any matches. I am typing up all my code on a Linux machine and I call this other script file from my script file using source("foo.r"). Now sometimes i access my folder from my Windows machine at work (the files are on dropbox). But of course my windows machine would not understand the linux path name. Is

Hopefully this is an easy problem... I'm trying to add a partitioned rank column to a data frame where the rank is calculated separately across a partition by categories, the way you could easily do in SQL. I found this solution in the archives that looked like it might work: http://tolstoy.newcastle.edu.au/R/e11/help/10/09/8675.html The example has a data frame with several car companies,