>>>>> François Pinard writes: > Hi, people. The documentation of abline says: > Usage:
> abline(a, b, untf = FALSE, ...) > abline(h=, untf = FALSE, ...) > abline(v=, untf = FALSE, ...) > abline(coef=, untf = FALSE, ...) > abline(reg=, untf = FALSE, ...) > so suggesting that h= and v= usages are exclusive. There are examples > in the mailing list archives of using both at the same time, and I find > convenient, for example, doing: > abline(h=0, v=0, ...) > for bolding the position of the origin or the axes through the origin. > By doing so, we are using undocumented capabilities of abline and > consequently, writing bugged R code. It does not matter so much > interactively, but scripts may be more sensitive. > Would it be acceptable to amend abline documentation, so to commit the > capability of abline to do both h= and v= at once? Or even combined > with intercept and slope? (abline is able to do all three at once > already!) Then, R users and code could more safely rely on this. > Just a suggestion, and not a big matter, of course! :-) Afaic, I would change the \usage to just given the function synopsis (removing \synopsis along the way), and indicate the various usage scenarios via details and/or examples. -k ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
