similar to: UseMethod call with no arguments

Hi, just in the process of updating my packages for R v2.0.0 and I have not had time to followed the R v2.0.0 discussions so maybe my questions have already been answered. A concern I have is that when creating packages they should be backward compatible with R v1.9.x for a while until all users and computers has migrated to R v2.0.x. It is pretty straightforward to setup my packages so that

Hi, I am not sure if this is a bug or a non-implement feature of text-drawing functions with TeX-style expression, but hat() and some of its equals does not get the right "bounding boxes" if they are put in sub- or superscripts. For instance, for the expression 'b[hat(a)]' the hat() seems to shift 'hat(a)' too much to the right of 'b'. Try the below example and

What about adding the argument 'flush=FALSE' to read.table() for the option to ignore trailing elements on each row? This feature already exists in scan(), which is called internally by read.table(): flush: logical: if `TRUE', `scan' will flush to the end of the line after reading the last of the fields requested. This allows putting comments after the last

With tryCatch() it is possible to catch interrupts with tryCatch(). Then you can use a 'finally' statement to clean up, release resources etc. However, how can I "protect" against additional interrupts? This is a concern when the hold down Ctrl+C and generates a sequence of interrupts. Example: tryCatch({ cat("Press Ctrl+C...\n"); Sys.sleep(5); }, interrupt =

Before reinventing the wheel, is there a package for working on (nice) sets and intervals, where one can for instance check if a set of intervals contains a scalar, taking the union and intersection of some intervals etc? Example: # Defining the set i = [1,2) + [3.5, 10] i <- c(1,2, 3.5, 10) attr(i, "include") <- c(TRUE, FALSE, TRUE, TRUE) x <- 0:12 # Get

When using write.table() to write data frames the integer columns are padded with unnecessary spaces (0x20) so that these columns are right align if you look at them in a text editor. However, I think it is quite a vast of file size. For instance, I am reading a tab-delimited 4200kb microarray data file and writing it back verbatim using write.table() and it becomes 5100kb, a 20% increase. Is this

Hello, I wonder if it is unwise to name a bundle the same as one of its packages. For instance, I now have a huge package called 'aroma' that I basically want to split up in several smaller packages, say 'aroma.core', 'aroma.io', 'aroma.explore', 'aroma.trial', 'aroma.deprecated' etc, which simplifies maintenance but also the overview. For

I raised the questions below a couple of months ago by sending it to the developers mailing list, but I don't know if it got through since no one replied to it. Looking at the [R] distribution, the UseMethod() is used in the following way: alias <- function(object, ...) UseMethod("alias") or barplot <- function(height, ...) UseMethod("barplot") What I

match the argument 'x' if there is another argument with prefix 'x' Full_Name: Henrik Bengtsson Version: 1.3.1 OS: Sun Solaris 8 Submission from: (NULL) (130.235.3.49) I ran into a strange problem with UseMethod(). Run the following code: foo.Bar <- function(this, x=0, xidx=0) { cat("In foo.Bar(): ", this, ", x=", x, ", xidx=", xidx,

A while ago I put together a Javascript called Webcuts (GPL), which when included in an HTML document it will make it possible to navigate the page and follow links by just typing parts of the label of the links, i.e. no mouse is needed. I have, by using 'sed', added the script to every HTML help file generated by R as an example, cf.

In "Writing R Extensions" (1.7.0 (2003-04-16). ISBN 3-901167-54-4) under the section "Writing R help files" and the subsection "Cross-references" the usage of \link is currently a little bit unclear: "There are optional arguments specified as \link[pkg]{foo} and \link[pkg:bar]{foo} to link to the package pkg with topic (file?) foo and bar respectively." I

Hi, is there a way to check the value of argument 'save' in quit() from within .Last() in my package. I would like to be able to save() an environment if quit("yes") was called and otherwise not. Thanks Henrik Bengtsson Dept. of Mathematical Statistics @ Centre for Mathematical Sciences Lund Institute of Technology/Lund University, Sweden (+2h UTC) +46 46 2229611 (off), +46

Hi, with R v1.7.1 (=I don't recall I saw it before) I noticed that R CMD INSTALL sometimes generates nonsense information, e.g. "Bundle: NA", even if there was a correct DESCRIPTION file too. I turns out that it happens when a DESCRIPTION.in has empty lines at the end. I have observed this behavior on both Sun Solaris 9 and Windows XP Pro (but here I am using unsupported Cygwin w/

Is there a way to detect if the opening of a connection to a pipe was successful or not? Here are two examples # Works > con <- pipe("ls") > res <- open(con, open="r") > print(res) NULL # Does not work > con <- pipe("unknown_command") > res <- open(con, open="r") > 'unknown_command' is not recognized as an

Hi, I'm creating a lot of tables in a file for inclusion in a Latex document. When I try to compile that document there is an error "too many unprocessed floats." Is there a way to correct this? Also, in a Latex table I want R to put in a $\beta$ in the caption, but it puts a weird system character instead of the \b Brian

Hi, I'm running R v1.9.0 on WinXP Pro. I noticed that R.exe and Rterm.exe behave differently on Ctrl-C. Starting a Windows Command prompt (cmd.exe) you get from running Rterm.exe: C:\Program Files\R>rw1090\bin\Rterm.exe --vanilla --quiet > ^C > ^C > 1+1 [1] 2 > Sys.sleep(100) # Ctrl-C after a few seconds > ^C > ^C > 1+1 [1] 2 > q() C:\Program Files\R>

I'd like to write some numbers to an external file that looks "pretty" (e.g, decimal points aligned, same number of decimals). For example, if using sprintf(), "%5.1f" can be used to specify the format of the float to be printed on screen. How can I do the same if I want to write an output file instead? I have tried cat and write.table, but none of them worked so far.

Hallo! I would like that the internal package functions does not appear in the documentation. I placed they names as aliases in the file nameofmypackage-internal.Rd as advised. After R CMD check (which runs neatly) they are still listed in 00Index.html. Is there no way to hide internal functions from the doc? Have I overlook something? Sincerely Eryk. Dipl. bio-chem. Eryk Witold Wolski

Hi, is there are reason for not supporting NULL or "NULL" values for argument colClasses in read.table(), much like you can use NULL values for argument 'what' in scan()? This would help quite a bit when reading large data files where only a few columns are of interest. I've modfied read.table() to so it calls scan(what=...) also with NULLs for the fields to be skipped.

Full_Name: Bart Version: 1.7.1 OS: XP Submission from: (NULL) (150.203.41.62) When trying to load microarray slides (gpr format) into R 1.7.1, I get the following error message Error in scan(file = file, what = what, sep = sep, quote = quote, dec = dec, : line 1057 did not have 43 elements I have been able to load the files on another computer before including an XP machine. I have