similar to: Creating an environment for a function.

This may be an FAQ, but a (perfunctory) search failed to turn it up. Suppose I have a function foo(...){<something>} and I want to obtain, inside foo, the names of items comprising the ``...''. E.g. if I call foo(melvin,clyde,irving) I want to be able to loop through the ``...'' and successively obtain the text strings "melvin", "clyde", and

If one specifies new options in a package, using the options() function, where does/should one document these new options? E.g. suppose that I put the line options(melvin=42) in a file zzz.R in the R directory of the package source, where the package contains functions foo(), bar(), clyde(), and irving() which all query options("melvin") and take some action based on the value of

On 5/11/19 3:41 AM, Hadley Wickham wrote: > For what it's worth, I don't think this strategy can work in general, > because a class might have attributes that depend on its data/contents > (e.g. https://vctrs.r-lib.org/articles/s3-vector.html#cached-sum). I > don't think these are particularly common in practice, but it's > dangerous to assume that you can restore a

On 04/11/2019 4:40 p.m., Pages, Herve wrote: > Hi Rolf, > > On 11/4/19 12:28, Rolf Turner wrote: >> >> On 5/11/19 3:41 AM, Hadley Wickham wrote: >> >>> For what it's worth, I don't think this strategy can work in general, >>> because a class might have attributes that depend on its data/contents >>> (e.g. >>>

Just now I again had occasion to want nested describe lists in a documentation file. I found that the bug which I reported on 18 October, 2001 still persists. I checked on the bug report at the R web page, and found that the notes say ``Not a problem in R 1.4.0 (2001-12-08)''. Well, it's still a problem for me --- using R 1.4.1. (Details: platform sparc-sun-solaris2.7 arch

I've just installed version 1.4.0 of R, and am experiencing a puzzling phenomenon with the library() function. I have .lib.loc set as follows: > .lib.loc [1] "/usr/local/lib/R/library" "/home/faculty/rolf/Rlib" If I invoke > library(melvin) I get the error message Error in library(melvin) : There is no package called `melvin' but if I invoke >

-----Original Message----- From: MAKRO BAGAFORO, Melvin Sent: Friday, November 16, 2001 11:52 AM To: 'Ben Elliston' Subject: RE: samba error Hi Guys, I already downloaded the latest config.guess and config.sub files, './configure' command is now error free. However, I have another problem, samba won't start. Samba test results:

Hi, How to save an R object for example a matrix or vector and not all objects created in a session (which is usually performed by save.image or q("yes"))? Best, Carol [[alternative HTML version deleted]]

Hi Rolf, On 11/4/19 12:28, Rolf Turner wrote: > > On 5/11/19 3:41 AM, Hadley Wickham wrote: > >> For what it's worth, I don't think this strategy can work in general, >> because a class might have attributes that depend on its data/contents >> (e.g. >>

On 5/11/19 10:54 AM, Duncan Murdoch wrote: > On 04/11/2019 4:40 p.m., Pages, Herve wrote: >> Hi Rolf, >> >> On 11/4/19 12:28, Rolf Turner wrote: >>> >>> On 5/11/19 3:41 AM, Hadley Wickham wrote: >>> >>>> For what it's worth, I don't think this strategy can work in general, >>>> because a class might have attributes

I'm getting an anomalous result from using the itemize command in a documentation file. My usage is something like \itemize{ \item Melvin \item Irving \item Clyde \item Fred } (This was place inside ``\details{ }''.) (Previously I had enclosed the text following each item in braces but that gave even worse results.) The package appears to install OK; i.e. the command R

You can try for testing with a column of class errors, from the package 'errors'. The attributes depend on the content in the way Hadley pointed out. I?aki El lun., 4 nov. 2019 23:19, Rolf Turner <r.turner at auckland.ac.nz> escribi?: > On 5/11/19 10:54 AM, Duncan Murdoch wrote: > > On 04/11/2019 4:40 p.m., Pages, Herve wrote: > >> Hi Rolf, > >> >

I gather from reading the back-issues of r-help that it should be possible (modulo a number of caveats) to read an excel (yuck!) file into R using RODBC. I have obtained and installed ODBC and the RODBC package, but cannot for the life of me figure out how to go about it. Can anyone give me a simple recipe? I have an excel file on cdrom, say: /mnt/cdrom/melvin.xls I have started R and loaded

Dear R list members I am trying to improve a boxplot with 2 data sets. I run somethinkg like boxplot(data1 ~ month, add=F, col = "red", ...) boxplot(data2 ~ month, add=T, col = "blue", ...) The problem is that the data from February are missing for data2, so R think that must take little more space between the data classes in data 2 and then both data gropus are not aligned.

hey! I have the following table structure in my DB | users | ------------ | (pk)id | | username | | pass | ------------ (1:n) | users_objects | | objectattributes | ------------------ ---------------------------------- | (fk,pk)user_id | (1:n) | (pk)attribute | |(fk,pk)object_id| | (pk,fk)

Hi everyone! I have a problem with defining 2 fk referencing the same table. I have a Program table and a Team table. The Program should have an away team and a home team fk. From my understanding, "the fk column should be named after the class of the target table, converted to lowercase, with _id appended". But, in my case, I have 2 fk referencing the same table. How can I do this?

Hi all, I am new to R-project my problem is I tried to get subset from two different tables its giving error but if i m tring for geting results from one table its working actually i have to take values from two tables with applying different conditions on two tables like kk- is an object of one table and fk- is an object of another table here i have to get values from these tables like

R CMD check tells me * checking R code for possible problems ... NOTE agexact.fit.rds: ... may be used in an incorrect context: ?optim(init, agfitfn, ...)? Warning: <anonymous>: ... may be used in an incorrect context: ?optim(init, agfitfn, ...)? Can anyone tell me what this message means? My searches haven't turned up anything useful. This is with R 2.7 and 2.9. The message

Dear forum, I would like to use the kernel2d or spkernel2d in the Splancs-package, but it does not recognize my polygon data. "Error in kernel2d(as.points(ptsbin), polygonprov, h0 = 2, nx = 100, : " is the error message. Invalid poly argument The data are defined as follows: polgonprov<-list(x=polyprov$X, y=polyprov$Y) with X and Y coordinates in the Lambert1972

Hello folks, I use to think that a relational databases without foreign keys constraints enforced strictly by the RDBMS were no good, piece of crap, data junk. However, I''ve also learned the hard way that FKs constraints imposes serious difficulties when moving data around, specially between different DBs, or for loading test data or for upgrading DBs schemas, or for porting DBs