[Rd] typo in cbind help page (PR#10523)
--=_Part_1509_5179695.1198191004146 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit --=_Part_1509_5179695.1198191004146 Content-Type: application/octet-stream; name=R.bug.report Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=R.bug.report # Your mailer is set to "none" (default on Windows), # hence we cannot send the bug report directly from R. # Please copy the bug report (after finishing it) to # your favorite email program and send it to # # [EMAIL PROTECTED] # ## The bug is that the cbind help should read stringsAsFactors=FALSE ( rather than TRUE ) in the Data Frame Methods section. --please do not edit the information below-- Version: platform = i686-pc-linux-gnu arch = i686 os = linux-gnu system = i686, linux-gnu status = major = 2 minor = 6.0 year = 2007 month = 10 day = 03 svn rev = 43063 language = R version.string = R version 2.6.0 (2007-10-03) Locale: LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C Search Path: .GlobalEnv, package:datasets, .Marks.env, package:lattice, package:nnet, package:car, package:filehash, package:reshape, package:zoo, package:chron, package:MASS, package:utils, package:stats, package:graphics, package:grDevices, package:methods, Autoloads, package:base --=_Part_1509_5179695.1198191004146-- __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Request: Documentation of formulae
This isn't particularly helpful because the book is quite old but formula notation/functionality is covered in depth in "Statistical Models in S" by Chambers and Hastie. My guess is that there is strong consistency between what is said in there and how things work in R. On Fri, May 30, 2008 at 4:19 PM, Mike Prager wrote: In working through material on p.272 of MASS (4th ed.), I came across the following model formula: pet1.lm <- lm(Y ~ No/EP - 1, Petrol) I was at a loss to understand the use of "/" until I looked in "An Introduction [!] to R," where I found the explanation. My request is that more complete material on model formulae be lifted from "Introduction to R" (or elsewhere) and put into the main online help files. There are other useful notations that may not be well known. Since formulae are not limited to any particular function, perhaps an entry could be made under "Formula". More justification: The help for "lm" does not explain this notation, nor did I find a cross-reference to anything useful there. The R Reference Manual seems to explain functions only. The R Language Definition has no index entry for "formula" or "model formulae". Looking to print, neither the section on "model formula" on p.56 of MASS nor the section surrounding the above example explains the notation, nor could I find it in Dalgaard's book, nor in Maindonald and Braun. This seems too nice a feature to keep hidden in plain sight. -- Mike Prager, NOAA, Beaufort, NC * Opinions expressed are personal and not represented otherwise. * Any use of tradenames does not constitute a NOAA endorsement. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] [R] learning R
Hi Wacek: Somewhere I remember reading that environments have functionality like lists EXCEPT for the names part. IIRC, I think that I read this in the R Language Reference manual also. On Wed, Feb 25, 2009 at 4:32 AM, Wacek Kusnierczyk wrote: a quick follow-up: e = new.env() e$a = 1 names(e) # NULL names(e) = 'a' # error in names(e) = "foo" : names() applied to a non-vector this is surprising. names(e) 'works', there is no complaint, but when names<- is used, the error is about the use of names, not names<-. btw. ?names says: "Description: Functions to get or set the names of an object. Usage: names(x) names(x) <- value Arguments: x: an R object. " and there is no clarification in the rest of the page that x cannot be an environment, or that it has to be a vector. furthermore: p = pairlist(a=1) names(p) # "a" names(p) = 'b' # fine is.vector(p) # FALSE which is incoherent with the above error message, in that p is *not* a vector. vQ Wacek Kusnierczyk wrote: the following: names(a[2]) = 'foo' has (partially) a functional flavour, in that you assign to the names of a *copy* of a part of a, while names(a)[2] = 'foo' does not have the flavour, in that you assign to the names of a; it seems, according to the man page you quote, to be equivalent to: a = 'names<-'(a, '[<-.'(names(a), 2, 'foo')) which proceeds as follows: tmp1 = names(a) # get a copy of the names of a, no effect on a tmp2 = '[<-'(tmp1, 2, 'foo') # get a copy of tmp1 with the second element replaced with 'foo' # no effect on either a or tmp1 tmp3 = 'names<-'(a, tmp2) # get a copy of a with its names replaced with tmp2 # no effect on either a, tmp1, or tmp2 a = tmp3 # backassign the result to a __ r-h...@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
