similar to: Constructor blah() vs. as.blah()

Full_Name: Jeff Hallman Version: 2.0 OS: Linux Submission from: (NULL) (132.200.32.34) The function findGeneric() in the utils namespace contains this internal function: isUME <- function(e) { if (is.call(e) && (is.name(e[[1]]) || is.character(e[[1]]))) { switch(as.character(e[[1]]), UseMethod = as.character(e[[2]]), "{" =

I found a tutorial for creating classes using generic functions ? S3 way ! It was short description so I couldn't grok in full its usage ... So far so good, what i currently do is something like this : Blah <- function(data,...) UseMethod('Blah') Blah.default <- function( ...... ) { self = .... class(self) <- 'Blah' self } Blah.some_method <-

In package A I have askForString(), which asks the user for a string. Also in package A I have defined ssh(), which calls askForString(). Package B has package A as a prerequisite. In package B I redefine askForString() to take advantage of a nicer user interface made available by B, namely the Emacs mini-buffer prompt. Packages B and A are both on the search path, with B ahead of A. If I call

Is is possible from within a function to cause its caller to return()? I have a function that lets user make edits to certain objects, and then checks that the edited objects still make sense. If they don't, the function puts up a notifier that the edits are being discarded and then returns, something like: if(badEdits){ notifyDialog("bad edits will be ignored")

Hello, Earlier in my rails application, I was using the convention of writing the following to refer to templates and/or views in the view folder. "./blah/blah" But in the Edge rail, it doesn''t work and the page doesn''t shows any output there is no error in the development log as well. But changing the above to "/blah/blah" seems to fix things. Was I

I'm writing a package that interfaces to the FAME database, via a library of compiled C routines accessible through a Linux .so file. My .onLoad() function loads the .so like this: dyn.load("/opt/fame/timeiq/lib/linux_x86/libjchli.so", local = F) and after that I also load my own fame.so via library.dynam("fame", package = "fame") The code in fame.so uses

How do I go about troubeshooting this? I'm using RHEL 4 update 6. mount: /dev/sdb1 already mounted or /blah busy It's actually an iSCSI LUN (NetApp filer). I successfully configured (ext3) and mounted it, but when I rebooted, the /dev/sdb1 device/partition is seen by the kernel and it shows up with "fdisk -l". Nevertheless I get that error. I've tried

One hassle I could do without is the necessity of writing C wrapper functions like this: void fameInit(int *status){ cfmini(status); return; } when I want to call a library function (cfmini, in this case) that takes an int argument. The .C interface only lets me pass a pointer to an int, rather than the int itself. Is there any chanch that .C could be enhanced to allow passing arguments by

I have an S3 class called "tis" (Time Indexed Series) which may or may not have multiple columns. I have a function "[<-.tis" that I've reproduced below. My question is this: inside of "[<-.tis", how can I distinguish between calls of the form x[i] <- someValue and x[i,] <- someValue ? In either case, nargs() is 3, and looking at the values

I have an S3 class called "tis" (Time Indexed Series) which may or may not have multiple columns. I have a function "[<-.tis" that I've reproduced below. My question is this: inside of "[<-.tis", how can I distinguish between calls of the form x[i] <- someValue and x[i,] <- someValue ? In either case, nargs() is 3, and looking at the values

Jeffrey J. Hallman wrote: >OK, I looked at the documentation and you're right about that. However, >I'm curious about why the first argument to UseMethod is ever necessary. >Is there ever a good reason for it to be something other than the name >of the calling function? (Wouldn't that lead to confusing code?) If >not, why bother with it at all? > >I've

Full_Name: Jeff Hallman Version: 1.2.2 OS: Solaris Submission from: (NULL) (132.200.32.33) "boink<-" <- function(x, a = 1, b = 2, value){ print(match.call()) x } > z <- 1 > boink(z, b = 4) <- 22 boink<-(x = *tmp*, a = 4, value = 22) > Shouldn't it have matched the 4 to b, not a?

My fame package has to link to the libchli.so that comes with FAME. However, FAME is now supplying both 32 and 64 bit versions of the library. The 32-bit version is $FAME/hli/libchli.so while the 64-bit version is $FAME/hli/64/libchli.so. To set the right flags, it seems that I need to know, from within configure.ac, whether the R installation is 32 bit or 64 bit. Is there a way to detect this?

Has anyone written a matrix editor or data.entry() replacement using the Tk table widget? I've been playing around with the examples at http://bioinf.wehi.edu.au/~wettenhall/RTclTkExamples/tktable.html and making some progress, but I'd rather not spend much time on this if someone else has already done it. Jeff

I'm working on a matrix editor using the Tk table widget, and it is almost done. It slices, dices, etc., and it can paste into Excel from an R session running on Linux. What I don't know how to do is paste from Excel into a Tk table, and Google is not helping me. Can anyone lend me a clue? Jeff

I have a few functions, such as screenWidth() and screenHeight(), which I have been able to implement for a Unix/Linux environment, but not for Windows. (Does anyone know how to find the screen dimensions in Windows?) The Writing R Extensions manual tells me how to include platform-specific sections in documentation, and even how to have platform-specific help files. But it doesn't say

Full_Name: Jeff Hallman Version: 2.3.1 OS: Windows Submission from: (NULL) (132.200.32.34) Internal(format.POSIXlt(as.POSIXlt(Sys.time()), "%Y%m%d%q", F)) Linux R-2.2.1 returns "20060613%q". Windows R-2.3.1 returns "20060613" dropping the "%q". The documentation says "Any character in the format string other that the '%' escape

(opening new bug report thread, on suggestion of BDR ..) I said on vaguely related topic: MM> There's another long-standing MM> UseMethod / NextMethod / Dispatch problem that I've never traced/solved.. MM> MM> Look at the $RHOME/tests/mode-methods.R file ! Peter Dalgaard already remarked : PD> ..i.e. this: PD> abc <- function(x, ...) { PD> if

In Splus, I often use graphics windows with a black background and white foreground. The S print.graph() function sends the current plot to my printer but with a white background and black foreground. I'd like to be able to do something similar in R, but can't figure out how. I've tried various permutations of dev.copy() and dev.print(), but it seems that the foreground color is

When I load R-WinEdt (>library(RWinEdt), I get the warning: Warning message: multi-argument returns are deprecated in: return(InstallRoot, RWinEdtInstalled) I have upgraded to R 1. 8 on Windows, by copying non-base libraries into the 1.8 library folder and updating the help. I also reinstalled R-WinEdt from the zip file as detailed in RWinEdt ReadMe file using the recommend (A)