ivo welch
2011-Feb-14 13:54 UTC
[Rd] small suggestion---add sd to summary() for vectors, matrices, and data frames
Dear R developers---of course, I have my own function that does this, but I think this would be useful for others, too. summary() already returns the first moment, and I would hope most of us think of the standard deviation as a pretty common summary statistic. not to clutter this mailing list, but it would also be useful to have an optional parameter that creates a different type of output, stacking the univariate outputs, along the lines of for (i in 1:ncol(d)) cat(names(d)[i], summary(d[i]), "\n") of course, both of these suggestions may be useful but are not necessary. my biggest suggestion is still to issue an "ambiguity warning" when "<-[0-9]" is encountered, suggesting to users either to use '<-[ ][0-9]' or '<[ ]-[0-9]' spacing for disambiguation. this would help a lot of my students who are newcomers. regards, /iaw ---- Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)