[R] problem with all/all.equal

Hi! In a function, I may have an instance in which all elements are equal. > x <- rep(1,5) > > x [1] 1 1 1 1 1 > identical(x) Error in .Internal(identical(x, y, num.eq, single.NA, attrib.as.set)) : 'y' is missing > all.equal(x) Error in is.expression(x) : 'x' is missing > I don't care what par

[R] PERT/CPM on R

Hi! I was wondering if PERT or CPM was implemented in R. I looked in the search engines but didn't find anything. Since there are so many packages, I thought I'd double check via the discussion. Thanks, Laura. [[alternative HTML version deleted]] __

[R] Finding the name "vector"

Hello: Here are some basic class items: > x <- 1:10 > class(x) [1] "integer" > x.mat <- matrix(1:6,nrow=2) > class(x.mat) [1] "matrix" > class(x>3) [1] "logical" > test <- function() { plot(1:10) } > class(test) [1] "function" > Is there something that says "vector", please? Or does it go to nu

[R] using initialize or using a constructor function

Hi I'm trying to learn about S4 methods, classes, etc. Is it better to use initialize or use a construction function, please? Thank you. Laura Smith [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

[R] now S4 classes and packages

Hi again List: This time I have the following: > setClass("dog",representation(breed="numeric")) [1] "dog" > woof <- function(x=1:10) { + if(!is.numeric(x))stop("Must have numeric data") + y <- new("dog",breed=x) + return(y) + } > setMethod("plot","dog", + function(x,y,...) { + plot(x@breed,col="b

[R] S3 classes and building a package

Hi List! Suppose I have the following, please: > setClass("buzz",representation(x="numeric"),S3methods=TRUE) [1] "buzz" > x <- rnorm(10) > class(x) <- "buzz" > plot.buzz <- function(x,y,...) { + plot.default(x,type="l",col="blue") + } > f <- function(x) { + return(x^2) + } > package.skeleton(list

[R] newbie Question on Generic and Method

Hi! Here is a newbie question, please: what is the difference between a generic and a method? Thanks, Laura [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read

[R] [OT] BLUE vs. BLUP

Hi! Does anyone have a numeric example for calculating BLUE and BLUP, please? Thanks, Laura [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

[R] newbie question on str output

Hi! Here is some output from an str command: > str(CO2) Classes ‘nfnGroupedData’, ‘nfGroupedData’, ‘groupedData’ and 'data.frame': 84 obs. of 5 variables: $ Plant: Ord.factor w/ 12 levels "Qn1"<"Qn2"<"Qn3"<..: 1 1 1 1 1 1 1 2 2 2 ... $ Type : Factor w/ 2 levels "Quebec","Mississip