similar to: deparse operators in expressions

Hi all, It is recommended in ?'if' that we use 'else' right after '}' instead of starting a new line, but I noticed deparse() will separate '}' and 'else' when the 'if...else' clause is used inside {...} (e.g. function body). Here is an example: ## if/else inside {} > cat(deparse(parse(text='function(){if (TRUE) {1} else {2}}')),

Hi, Suppose I have x = parse(text = " {y=50+50+50#'asfasf' } ") now x is an expression with some src attributes. > x expression({y=50+50+50#'asfasf' }) attr(,"srcfile") <text> attr(,"wholeSrcref") {y=50+50+50#'asfasf' } My question is, how can I get my string back (the string passed to parse() as the text argument)? >

Hi, It seems that anti-aliasing in png(type = 'cairo') is not well supported for the point symbols without boarders, e.g. pch = 16. The Cairo package works well, though. You can compare png() with CairoPNG(): png(): http://i.imgur.com/8niB3jX.png CairoPNG(): http://i.imgur.com/FZBJOxm.png f = function(dev, ..., main = '') { dev(...) plot(c(1, 2, 1, 2), c(1, 1, 2, 2),

Hi, Recently I noticed file.copy() would discard the file mode information. Is this the expected behaviour or a bug for file.copy()? > file.create('testfile') [1] TRUE > file.info('testfile') size isdir mode mtime ctime testfile 0 FALSE 644 2011-03-05 17:06:39 2011-03-05 17:06:39 atime uid gid uname grname

Hi, Recently I noticed file.copy() would discard the file mode information. Is this the expected behaviour or a bug for file.copy()? > file.create('testfile') [1] TRUE > file.info('testfile') size isdir mode mtime ctime testfile 0 FALSE 644 2011-03-05 17:06:39 2011-03-05 17:06:39 atime uid gid uname grname

Dear R developers, I asked this question in r-help list but have not got a definite solution yet, and I think it might be more appropriate to ask developers or CRAN maintainers directly. Many software packages often have a menu item like "Check for updates" under the "Help" menu, e.g. Filezilla and Firefox, and I believe it is also necessary for R (at least for R GUI under

Hi, I have a function knit_expand() and its source/Rd are below: https://github.com/yihui/knitr/blob/master/R/template.R#L43-L44 https://github.com/yihui/knitr/blob/master/man/knit_expand.Rd When I run R CMD check on the package I get this warning (with both R 2.15.2 and R-devel): * checking for code/documentation mismatches ... WARNING Codoc mismatches from documentation object

Hi, The problem arises when I lazyLoad() the .Random.seed from a previously saved database. To simplify the process of reproducing the problem, see the example below: ## this assignment may not really make sense, but illustrates the problem delayedAssign('.Random.seed', 1L) typeof(.Random.seed) # [1] "integer" rnorm(1) # Error in rnorm(1) : # .Random.seed is not an integer

Hi, The problem arises when I lazyLoad() the .Random.seed from a previously saved database. To simplify the process of reproducing the problem, see the example below: ## this assignment may not really make sense, but illustrates the problem delayedAssign('.Random.seed', 1L) typeof(.Random.seed) # [1] "integer" rnorm(1) # Error in rnorm(1) : # .Random.seed is not an integer

Hi, A Windows user asked me a question and I believe this is a bug of R 3.0.0 under Windows: > plot(1:10) > savePlot('test.wmf') Error in .External(C_savePlot, device, filename, type, restoreConsole) : Incorrect number of arguments (4), expecting 3 for 'savePlot' > sessionInfo() R version 3.0.0 (2013-04-03) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: [1]

Hi all, Since roxygen is a great help to document R packages, I am wondering if there exists an approach to go back from the raw Rd files to roxygen-documentation? E.g. turn "\author{Somebody}" into "@author Somebody". This sounds ridiculous, but I believe it helps in the long term for me to maintain R packages. Thanks! Regards, Yihui -- Yihui Xie <xieyihui at

Hi, I'm aware of the definition of a "valid filename" in .SweaveValidFilenameRegexp, but I think it might be better to quote the filename when it contains spaces instead of just giving a warning. This should bring us safer LaTeX code (although I never use spaces in paths). Here is the simple patch: Index: src/library/utils/R/SweaveDrivers.R

Hi everyone, I want to modify two base R functions 'parse' and 'deparse' immediately after R has started, so I added some code in the file 'Rprofile.site' under the 'etc' directory. Here is a simple example: parse=function(...){ base::parse(...) } I'll get an error when I start R as follows: Error: cannot change value of locked binding for

Hi, I have spent a few hours on the R-exts manual and the documentation of parse_Rd() (as well as the PDF document in the references), but I still have not figured out what results=rd means. I thought I could use an R code fragment to create an Rd fragment dynamically. Here is an example, in which I was expected the output to be a describe list <DL> in HTML, but it turns out not to be true.

Hi, The imaginary unit is gone in the 'text' column in the returned data frame from getParseData(), e.g. in the example below, perhaps the text should be 1i instead of 1: > p=parse(text='1i') > getParseData(p) line1 col1 line2 col2 id parent token terminal text 1 1 1 1 2 1 2 NUM_CONST TRUE 1 2 1 1 1 2 2 0 expr

See the example below (under Ubuntu): $ Rscript -e '1' -e '2' [1] 1 [1] 2 $ Rscript -e '1' -e '' -e '2' ERROR: option '-e' requires an argument $ uname -a Linux xie 3.5.0-25-generic #39-Ubuntu SMP Mon Feb 25 18:26:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Similar problem under Windows: Rscript -e "1" -e "" -e "2" [1]

Hi all, We know old.packages() can check for updates of add-on packages, but is there a way to check updates of R itself? "go to R homepage" is a way, of course, but I hope this can be done by R. I'm not sure about the "reliable" place to check; here is a simple example to check from one of the CRAN webpages (kind of nasty approach...): x =

Hi, I feel the CSS definitions for the HTML help pages are not visually appealing enough. I admit this is a very subjective matter, so I don't have strong arguments for this wishlist, although I wrote my version of R.css with some web design instructions in mind (e.g. use browser-safe sans-serif fonts). Anyway, here is what I've done:

Hi, I thumbed through the source code Sweave.R but was unable to figure out when (under what conditions) R will insert the line numbers to the output. The R 2.12.0 news said: ? Parsing errors detected during Sweave() processing will now be reported referencing their original location in the source file. Do we have any options to turn off this reporting? Thanks! Regards, Yihui --

Hi all, Currently Sweave does not format the (especially numeric) value in \Sexpr{}, and I often have to round() the numbers explicitly, otherwise I will get more than 10 digits, which is not necessary for me in most cases. Is there a way to specify the number of digits to be kept for values in \Sexpr{}? e.g. can we make \Sexpr{} respect getOption('digits')? Thanks! Regards, Yihui --