search for: dened

I have a data set that looks like this: dene <- data.frame(length = c(35,32,33,34,41,40,46,35,41,40,45,36,38,37,39,40,42,42,42,43,44), sex=c(1,1,1,1,2,2,2,1,2,2,2,1,2,2,2,2,2,2,2,2,2)) I would like to plot the density (frequency of occurrence) of each length class but I want to have different colors for sex. I used the following: library(sm) sex.f<-factor(as.factor(dene$sex),levels=c(1,2),

Hi, In some cases the number of arguments passed as ... must be determined inside a function, without evaluating the arguments themselves. I use the following construct: dotlength <- function(...) length(substitute(expression(...))) - 1L # Usage (returns 3): dotlength(1, 4, something = undefined) How can I define a method for length() which could be called directly on `...`? Or is it an

Dear R Core Team, I learnt approx. two years ago in this mailing list that one can use the following "trick" to get a (dotted pair)list of the ellipsis arguments inside a function: `substitute(...())` Now my problem is that I can not find any occurrence of this call within the R source - the most frequent solution there is `substitute(list(...))[-1L] ` I would like to know if: 1)

Without having dug into the details, it could be that one could update the parser by making a 'return' a keyword and require it to be followed by a parenthesis that optionally contains an expression followed by end of statement (newline or semicolon). Such a "promotion" of the 'return' statement seems backward compatible and would end up throwing syntax errors on:

And the related: > f = function() stop(return("lol")) > f() [1] "lol" I have a feeling all of this is just return() performing correctly though. If there are already R CMD CHECK checks for this kind of thing (I wasnt sure but I'm hearing from others there may be/are) that may be (and/or may need to be) sufficient. ~G On Fri, Nov 20, 2020 at 3:27 PM D?nes T?th

Thank Denes for the clarification, glad to see my package got one citation from my own question:) Also, thank Benjamin for sending many useful documents. Actually, the question is related to the SharedObject package that Benjamin has pointed to. I wanna avoid sharing an object that has already been shared, so I need to check whether an object is an ALTREP that is defined in my package. Since the

Benjamin, You happened to send a link which points to the OP's own package :) I think Jiefei would like to know how one can "officially" determine if an arbitrary ALTERP object belongs to a class that he owns. Regards, Denes On 10/19/20 10:22 AM, Benjamin Christoffersen wrote: > It seems as if you can you use the ALTREP macro as done in this > package:

Hi, For some reason do.call on anova fails if the models are named lmer objects. Consider the following example: library(lme4) models <- list( lmer(Reaction ~ Days + (1| Subject), sleepstudy), lmer(Reaction ~ Days + (Days | Subject), sleepstudy)) # # models is an unnamed list, do.call works (although with warning): do.call(anova, models) # # after labeling the models, do.call gives an

On 20/11/2020 7:01 p.m., Ben Bolker wrote: > I may be unusual but I don't find these examples surprising at all/ > I don't think I would make these mistakes (maybe it's easier to make > that mistake if you're used to a language where 'return' is a keyword > rather than a function? > > My two cents would be that it would make more sense to (1) write

Dear R-Core Team, I found an unexpected behaviour in utils::removeSource (also present in r-devel as of today). --- # create a function which accepts NULL argument foo <- function(x, y) { if (is.null(y)) y <- "default foo" attr(x, "foo") <- y x } # create a function which utilizes 'foo' testSrc <- function() { x <- 1:3 x <- foo(x,

> Date: Fri, 16 Oct 1998 18:07:45 -0700 > From: RICK_@t-online.de =?ISO-8859-1?Q?(J=DCRGEN?= ANZER) > To: dszekely@csoft.ro > Subject: Re: WIN 98 password problem > Message-ID: <3627EDE1.38A@t-online.de> > > Szekely Denes wrote: > > > > Three days ago I had a mad ideea to install Win 98 on my PC. Until this > > date I cannot map or access from WINDOWS

Hi! I'm new on the list, so please, be patient with me! I have a problem for wich I can't find the answer in the FAQ. Until recently I was running a 16 PC-s network with SCO OpenServer 5.0.4 and Samba 1.9.16p11 on the server and mixed clients (Win 3.11 to Win 95 OSR2). The users on the network have access to a PUBLIC directory on they own user directories on the server without

This is very nice to learn about, Denis, but it seems only fair to point out that the result of rbindlist is not a data frame. You can convert it to a data frame easily, but the copy and indexing semantics of data tables are quite different than data tables, which could be a real headache for someone not prepared for those differences. (To learn more, read the data tables vignette.) Tibbles (as

Hi Tim, I have also asked a similar question a couple of months ago, and someone else did the same recently, maybe on r-devel. We received no "official" response, but Deepayan Sarkar (R Core Team member) claimed that: " There is no documented reason for this to work (AFAIK), so again, I would guess this is a side-effect of the implementation, and not a API feature you should

Hi! If you were looking foe a paper about improving vorbis compression by using arithmetic coding and exploiting temporal redundancies (i.e. repeating sound) you might have a look here: http://web.interware.hu/rudas Three ogg vorbis files were compressed losslessly, with compression ratios between 2 - 8 % and compression time about 1/500 realtime (i.e. slow). Theoretical upper bound of the

AFAIK there is no hashing utility in base R which can create hash digests of arbitrary R objects. However, as also described by Henrik Bengtsson in [1], we have tools::md5sum() which calculates MD5 hashes of files. Calculating hashes of in-memory objects is a very common task in several areas, as demonstrated by the popularity of the 'digest' package (~850.000 downloads/month). Upon

On 05/02/2018 07:11 PM, Kevin E. Thorpe wrote: > I suspect this is pretty easy, but I'm having trouble figuring it out. > Basically, I have a list of data frames such as the following example: > > list(A=data.frame(x=1:2, y=3:4),B=data.frame(x=5:6,y=7:8)) > > I would like to turn this into data frame where the list elements are > essentially rbind'ed together and

I may be unusual but I don't find these examples surprising at all/ I don't think I would make these mistakes (maybe it's easier to make that mistake if you're used to a language where 'return' is a keyword rather than a function? My two cents would be that it would make more sense to (1) write code to detect these constructions in existing R code (I'm not good at

I probably need to be more specific. What confuses me is not the use of substitute, but the parenthesis after the dots. It clearly works and I can make guesses as to why but it is definitely not obvious. The following function gives the same final result but I can understand what is happening. dots <- function (...) { exprs <- substitute(list(...)) as.list(exprs[-1]) } In the

On 09/28/2017 10:25 PM, Dan Abner wrote: > Hi all, > > I have a large number of text strings to search for enumerated items. > However, I am receiving this error message even though I thought that I > properly escaped the special character closed parenthesis: > > >> Count<-str_count(text3,keywords) > Error in stri_count_regex(string, pattern, opts_regex =