I am quite new in R and I want to edit R standard files. In particular I want to edit plot.TukeyHSD. If I type its name in R I can see the source code,
> plot.TukeyHSD
function (x, ...)
{
for (i in seq_along(x))
{
xi <- x[[i]][, -4L, drop = FALSE]
yvals <- nrow(xi):1L
dev.hold()
on.exit(dev.flush())
plot(c(xi[, "lwr"], xi[, "upr"]), rep.int(yvals, 2L),
type = "n", axes = FALSE, xlab = "", ylab = "", main = NULL, ...)
axis(1, ...)
axis(2, at = nrow(xi):1, labels = dimnames(xi)[[1L]],
srt = 0, ...)
abline(h = yvals, lty = 1, lwd = 0.5, col = "lightgray")
abline(v = 0, lty = 2, lwd = 0.5, ...)
segments(xi[, "lwr"], yvals, xi[, "upr"], yvals, ...)
segments(as.vector(xi), rep.int(yvals - 0.1, 3L), as.vector(xi),
rep.int(yvals + 0.1, 3L), ...)
title(main = paste0(format(100 * attr(x, "conf.level"),
digits = 2L), "% family-wise confidence level\n"),
xlab = paste("Differences in mean levels of", names(x)[i]))
box()
dev.flush()
on.exit()
}
}
My problem is that I can't find where it is to edit it. I know that R is typically installed on /usr/lib64/R/ in Linux/Unix, but I can't find this function there.
