similar to: image()

Would it be reasonable to suggest adding an `all' flag to save.image(), i.e. "save.image" <- function (f = ".RData", all.names = F) eval(substitute(save(list = ls(all.names = all.names), file = f)), .GlobalEnv) I only ask because I keep losing my .First() function. I would like to start R in a particular directory and have it configure according to the First()

This is a minor question, but is there any difference between the two objects fred <- structure(1:10, dim = c(2,5)) and fred <- structure(1:10, .Dim = c(2,5)) Should I be using one rather than the other? Thanks, Jonathan. Jonathan Rougier Science Laboratories Department of Mathematical Sciences South Road University of Durham Durham DH1 3LE

Am I right in thinking that there a discrepancy between the ?library documentation and the library() function? If I have a library called "patches", then according to the documentation (0.62.4) patches/R should contain source files like fred.R and george.R, but in practice the library only loads if both fred.R and george.R are given in a file called patches in the R subdirectory of

Dear All, Perhaps, what I am asking is impossible, but I am asking it anyway. I have got several pdf files with rows of colored rectangles: red rectangles should be read as 0; green rectangles as 1. No other color exists. Is there some way to have R reading the colored rectangles to a matrix or data frame converting the color of the rectangles to sequences of 01? Thanks in advance, Paul

Is anyone else concerned with the way in which the R function parser relocates comments that occur after condional expressions in functions to before, i.e. fred <- function(x) { # wonder what x is like if (x>0) stop("Sorry non-positive x only") # that showed x big-time! x } but then fred is parsed and stored as "fred" <- function (x) { # wonder what x is

I am not sure that this is a bug, but it was unexpected -- of course my expectations are fallible, eg column ordering in model.matrix()! When an array is subscripted the names of the dimnames list are lost (v 64.1). fred <- array(1:12, 2:4, list(A = letters[1:2], B = letters[3:5], C = letters[6:9])) dimnames(fred) dimnames(fred[1, , ]) dimnames(fred[1, , , drop=FALSE]) In the first

I can generate a segmentation fault as follows, where I would expect a syntax error: fred <- as.list(1:10) lapply(fred, "[[") platform sparc-sun-solaris2.5.1 arch sparc os solaris2.5.1 system sparc, solaris2.5.1 status status.rev 0 major 0 minor 64.1

I wonder if we might also include an "equiv" function along with the other set functions (ie "union", "intersect", etc), perhaps along the lines of "equiv" <- function(x, y) all(c(match(x, y, 0)>0, match(y, x, 0)>0)) (which I think might be the quickest implementation). I use this type of function quite frequently: is there some reason why it is

I wonder if we might also include an "equiv" function along with the other set functions (ie "union", "intersect", etc), perhaps along the lines of "equiv" <- function(x, y) all(c(match(x, y, 0)>0, match(y, x, 0)>0)) (which I think might be the quickest implementation). I use this type of function quite frequently: is there some reason why it is

In legend() is it possibly to mix lines and boxes? I would like to do something like legend(locator(1), legend = c("al", "ben", "chris", "dave"), lty = c(1, 2, 3, NA), fill = c(NA, NA, NA, "gray")) to indicate that "al", "ben" and "chris" have lines, and "dave" has a gray shading. Many thanks,

Just a minor point, but the adj argument in ?text is described wrongly (0.64.1). Perhaps the following might be added to the details. Values of 0, 0.5, and 1 specify left/top, middle and right/bottom, respectively. The default is for centred text, ie \code{adj = c(0.5, 0.5)}. Cheers, Jonathan. Jonathan Rougier Science Laboratories Department of

Hi Everyone, Just a minor point, but could chol() be changed to include the dimnames of the original matrix? This will ensure that x and t(R) %*% R have the same dimnames, where R <- chol(x). So we just need to insert if (!is.null(dx <- dimnames(x))) dimnames(z$v) <- dx ahead of the return. Cheers, Jonathan. Jonathan Rougier Science Laboratories

I would like to suggest a slight modification to diag(). In the case where x is a matrix with both row names and column names the same, it would be reasonable if the resulting vector also had those names. I often use diag() on variance matrices, where this modification is helpful. The modification requires replacing if (is.matrix(x) && nargs() == 1) return(c(x)[1 +

This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. ---559023410-162216788-916833047=:29339 Content-Type: TEXT/PLAIN; charset=US-ASCII On my R installation (0.62.4) there is no dist() function, so I attach one possibility. It provides

I hope this is the right forum (it'll be second time lucky if it is!). I note in the current distribution that functions passed as arguments (eg to outer, sweep and the applys) are not handled consistently. As I often pass functions myself, I find the following simple function useful ... match.fun <- function (FUN, descend = F) { if (is.character(FUN)) get(FUN,

This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. ---559023410-1804928587-922106403=:691 Content-Type: TEXT/PLAIN; charset=US-ASCII A couple of weeks ago I asked if anyone had generalised outer to include bound extents -- effectively

This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. ---559023410-1251336619-945861747=:5357 Content-Type: TEXT/PLAIN; charset=US-ASCII While fiddling with apply I noticed that there appears to be an error in the dimnames, which actually

Hi Everyone, Can I suggest a couple of new `codes' methods. I know codes is a bit dodgy (at least, according to the comments in codes.factor), but for what it's worth I like to extract codes from data frames of factors, for which the following two functions (which operate recursively) are helpful: "codes.default" <- function(x) { if (is.list(x)) lapply(x, codes)

This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. ---559023410-342241519-916419809=:25543 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Content-ID: <Pine.GSO.3.96.990115171305.25543M@laplace> I attach outer.tar.gz which contains

Has anyone written subscripting methods for matrices which are indexed from zero? i.e. functions such as "[.zoffset" and "[<-.zoffset" which would allow, given an appropriate function "zmatrix" "zmatrix" <- function(...) { robj <- matrix(...) class(robj) <- "zoffset" robj } fred <- zmatrix(1:20, 4, 5) fred[0, 4] # would be 17