similar to: Applicability of "Programming with Data" Text

Hi all, I found the web site for R and decided to install it on my freebsd system; however, I have run into 'permission problems' during execution. I do the standard .configure, make, make check, make install and install into the default location of /usr/local/... but when a normal user attempts to run 'R' I get the following: --- [tulip ~]% R R : Copyright 2001, The R

This is no doubt trivial but after searching the help files and the web, I cannot seem to find it. 1) How do I convert 'hgt' into 'HGT' in R? 2) How should I have used the help facilities to find this? At the end of the day, all I want to do is case insensitive string matching... i.e. 'if ("HGT" == 'hgt') print('this should be true')' I tried

Right. The methods such as as.data.frame.numeric don't get dispatched, basically because RSMethods tries to interpret class(x) in the S4 sense (so, e.g. a numeric vector has class "numeric"). Problems can then come from different semantics for S3-style and S4-style methods. The older methods don't dispatch on the mode of vectors (or equivalently, on the value of

Hi all, Appologies for the rather basic IO question but I am rather new to R... Migrated from IDL/Matlab recently. I have a rather simple Fortran control file (sigh...) that I am trying to parse and read using R. My problem is that the file's format is somewhat flexible. Imagine: --- 1> 39 1901 2> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 3> 22 24 26 28 30 32 34 36

Thorsten is right. There is a direct formula for computing the Moore-Penrose inverse using the singular value composition of a matrix. This is incorporated in the following: mpinv <- function(A, eps = 1e-13) { s <- svd(A) e <- s$d e[e > eps] <- 1/e[e > eps] return(s$v %*% diag(e) %*% t(s$u)) } Hope it helps. Dietrich

Hi all, I've tried installing NUT from both the Debian packages and the 2.0.4-pre1 source but I'm unable to sort out the USB permissions when using the newhidups driver and an APC XS series UPS. In each case, I'm able to run newhidups as user root but running it as user nut fails: --- as 'nut' # /lib/nut/newhidups -u nut -a apc1 Network UPS Tools: New USB/HID UPS driver 0.28

Surely I am confused about something... still. Having read parts of S-programming, MASS, and Programming with Data, I am no closer to understanding how to make a simple vector containing list objects. If I have somehow skipped over a relevant section in these books, please let me know what sections I should have read. This is a simpler case of what I posted on Friday. I am trying to build

Hi all, I am writing relatively large data files from some simulation code that runs on a variety of different platforms. I just migrated from my own (broken) file format that was not particularly platform independent to the XDR format. Is it possible to read these XDR files directly into R? Cheers, Randall -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help

Currently read.table is rather limited in its type conversion. The algorithm is 0) Read as character 1) Try to convert to numeric. If that works, quit 2) Convert to factor unless !as.is. I am thinking about adding more flexibility and more classes by the following two changes. A) Anticipating the arrival of classes for all R objects, add an argument say `colClasses' that allows the user to

Hi, I´m trying to write some R classes but I din´t find documentation enought to develop them. I read there is 2 ways to write classes, using S3 ou S4 models. And it seems that S4 is the best model, so I thing I should use this one. I´m new user of R and I´m searched on the net some information about creating new classes. I found this document:

I noticed this oddity about [ and setMethod. First, I define testFunc, which sorts a data frame by the first column and returns the entries that aren't NAs, and testIt, which runs testFunc repeatedly on a random large data frame, each time saving the return into a dummy placeholder (for demonstration's sake). > require(methods) Loading required package: methods [1] TRUE > testFunc

I noticed this oddity about [ and setMethod. First, I define testFunc, which sorts a data frame by the first column and returns the entries that aren't NAs, and testIt, which runs testFunc repeatedly on a random large data frame, each time saving the return into a dummy placeholder (for demonstration's sake). > require(methods) Loading required package: methods [1] TRUE > testFunc

Hello all, I''ve tried changing all kinds of attributes for the zfs''s, but I can''t seem to find the right configuration. So I''m trying to move some zfs''s under another, it looks like this: /pool/joe_user move to /pool/homes/joe_user I know I can do this with zfs rename, and everything is fine. The problem I''m having is, when I mount

Hello, Thomas Stabla (statho3@web.de) has already sent this question to R-help, Wed, 12 Nov 2003 21:21:31 +0100, but we are not sure whether we should better post this mail to this audience than to R-help: --------------------------------------------------------------------- We are using S4-classes and want to force a validity check when an object is created. How can this be done, when an

Hi The cor function in the stats package calculates the correlation between columns of data, does anyone know if it is at all possible to calculate the correlation between rows instead ? Or is there an appropriate package or function that is more appropriate I'd like to calculate spearman & pearson correlations between rows. Many thanks Jason -- --------------------------------

Full_Name: Colin A. Smith Version: 1.8.0 OS: Mac OS X 10.2.6 Submission from: (NULL) (216.102.90.18) Both Biobase and my package annaffy use S4 classes to define methods for "[". Both packages use the save image method of installation. (See annaffy 1.0.3 in BioC CVS.) Depending on how both packages are loaded, the Biobase definitions seem to be getting masked out: >

I am another person who has had trouble documenting S4 classes and (particularly) methods. The methods package itself is pretty cool by the way, but it is a pity that there are as yet no guidelines on S4 in the "Writing R Extensions" document. I have actually put together a guide on S4 documentation myself for the use of my own lab which is at

Hi! Here a simple example. setClass("myclass" ,representation(info="character") ,contains="matrix" ) rownames(dd)<-c("a","b") tt<-new("myclass",dd) #the source of pain. as(tt,"matrix")<-matrix(1,3,3) Error: length of dimnames [1] not equal to array extent Is there a different way to do what I would like to do (I

Hi! Here a simple example. setClass("myclass" ,representation(info="character") ,contains="matrix" ) rownames(dd)<-c("a","b") tt<-new("myclass",dd) #the source of pain. as(tt,"matrix")<-matrix(1,3,3) Error: length of dimnames [1] not equal to array extent Is there a different way to do what I would like to do (I

In ancient times, circa 1980, S data directories were called swork and sdata not .Data, and "New-S" as described in the already medieval "Blue Book" discusses a function DBCONVERT that converted swork data into .Data data. It is embarrassing to admit it, but I still have data archives from a BTL machine called alice in the swork format and would like to convert a dataset to