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# $Id: RSCompat.S 625 2005-06-09 14:20:30Z nj7w $
#
# $Log$
# Revision 1.9 2005/06/09 14:20:28 nj7w
# Updating the version number, and various help files to synchronize splitting of gregmisc bundle in 4 individual components.
#
# Revision 1.1.1.1 2005/05/25 22:17:28 nj7w
# Initial submision as individual package
#
# Revision 1.8 2003/04/04 13:58:59 warnes
#
# - Replace 'T' with 'TRUE'
#
# Revision 1.7 2003/03/07 15:48:35 warnes
#
# - Minor changes to code to allow the package to be provided as an
# S-Plus chapter.
#
# Revision 1.6 2003/01/02 15:42:00 warnes
# - Add nlevels function.
#
# Revision 1.5 2002/03/20 03:44:32 warneg
# - Added definition of is.R function.
#
# - Added boxplot.formula
#
# Revision 1.4 2002/02/05 02:20:07 warneg
#
# - Fix typo that caused code meant to run only under S-Plus to run
# under R, causing problems.
#
# Revision 1.3 2001/12/19 22:45:44 warneg
# - Added code for %in%.
#
# Revision 1.2 2001/09/18 14:15:44 warneg
#
# Release 0.3.2
#
# Revision 1.1 2001/09/01 19:19:13 warneg
#
# Initial checkin.
#
#
# Code necessary for contrast.lm, boxplot.n to work in S-Plus
if(!exists("is.R") || !is.R() )
{
is.R <- function() FALSE
getOption <- function(...) options(...)
if(!exists("parent.frame")) parent.frame <- sys.parent
colnames <- function (x, do.NULL = TRUE, prefix = "col")
{
dn <- dimnames(x)
if (!is.null(dn[[2]]))
dn[[2]]
else {
if (do.NULL)
NULL
else paste(prefix, seq(length = NCOL(x)), sep = "")
}
}
rownames <- function (x, do.NULL = TRUE, prefix = "row")
{
dn <- dimnames(x)
if (!is.null(dn[[1]]))
dn[[1]]
else {
if (do.NULL)
NULL
else paste(prefix, seq(length = NROW(x)), sep = "")
}
}
"rownames<-" <- function (x, value)
{
dn <- dimnames(x)
ndn <- names(dn)
dn <- list(value, if (!is.null(dn)) dn[[2]])
names(dn) <- ndn
dimnames(x) <- dn
x
}
"colnames<-" <- function (x, value)
{
dn <- dimnames(x)
ndn <- names(dn)
dn <- list(if (!is.null(dn)) dn[[1]], value)
names(dn) <- ndn
dimnames(x) <- dn
x
}
# from the MASS library by Venables & Ripley
ginv <- function (X, tol = sqrt(.Machine$double.eps))
{
if (length(dim(X)) > 2 || !(is.numeric(X) || is.complex(X)))
stop("X must be a numeric or complex matrix")
if (!is.matrix(X))
X <- as.matrix(X)
Xsvd <- svd(X)
if (is.complex(X))
Xsvd$u <- Conj(Xsvd$u)
Positive <- Xsvd$d > max(tol * Xsvd$d[1], 0)
if (all(Positive)) Xsvd$v %*% (1/Xsvd$d * t(Xsvd$u))
else if (!any(Positive)) array(0, dim(X)[2:1])
else Xsvd$v[, Positive] %*% ((1/Xsvd$d[Positive]) * t(Xsvd$u[, Positive]))
}
"format.pval" <-
function (pv, digits = max(1, getOption("digits") - 2),
eps = .Machine$double.eps,
na.form = "NA")
{
if ((has.na <- any(ina <- is.na(pv))))
pv <- pv[!ina]
r <- character(length(is0 <- pv < eps))
if (any(!is0)) {
rr <- pv <- pv[!is0]
expo <- floor(log10(pv))
fixp <- expo >= -3 | (expo == -4 & digits > 1)
if (any(fixp))
rr[fixp] <- format(pv[fixp], dig = digits)
if (any(!fixp))
rr[!fixp] <- format(pv[!fixp], dig = digits)
r[!is0] <- rr
}
if (any(is0)) {
digits <- max(1, digits - 2)
if (any(!is0)) {
nc <- max(nchar(rr))
if (digits > 1 && digits + 6 > nc)
digits <- max(1, nc - 7)
sep <- if (digits == 1 && nc <= 6)
""
else " "
}
else sep <- if (digits == 1)
""
else " "
r[is0] <- paste("<", format(eps, digits = digits), sep = sep)
}
if (has.na) {
rok <- r
r <- character(length(ina))
r[!ina] <- rok
r[ina] <- na.form
}
r
}
"%in%" <- function (x, table) match(x, table, nomatch = 0) > 0
strwidth <- function(...)
{
par("cin")[1] / par("fin")[1] * (par("usr")[2] - par("usr")[1])
}
strheight <- function(...)
{
par("cin")[2] / par("fin")[2] * (par("usr")[4] - par("usr")[3])
}
boxplot.formula <- function(x, data = sys.parent(), ..., ask = TRUE)
{
if(!inherits(x, "formula"))
x <- as.formula(x)
mf <- model.frame(x, data, na.action = function(z) z)
if(length(names(mf)) > 2)
stop("boxplot.formula only accepts models with 1 predictor")
resp <- attr(attr(mf, "terms"), "response")
class(mf) <- NULL
y <- mf[[resp]]
x <- mf[[-resp]]
xlab <- names(mf)[-resp]
ylab <- names(mf)[resp]
boxplot(split(y, x), xlab = xlab, ylab = ylab, ...)
}
nlevels <- function(x) length(levels(x))
NULL
}
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