On Sun, 2 Feb 2003, Ott Toomet wrote: > Thank for Brian D. Ripley for the answer to my previous question. > > My aim is to print single values from different real vectors with > different digits option. This is quite a possible with Rprintf() but > that one supprots printing format as C does, not in R native way > (setting digits=7 or printing with "%12.7f" are two quite different > things). So I would like to find something more R-ish.
R *does* use C printing formats, and all you need to so is to track those down in the sources. > PrintValue() seems promising (it understands when I change > options(digits) but I did not get it to print a single value. I tried > > SEXP variable; > PrintValue(VECTOR_ELT(variable, i)); > > which lead to crash, while > > PrintValue(variable); > > prints the whole vector. You need to create a vector of length 1 to print one value. > StringFromReal() (and printing as CHAR) is otherwise nice but I dont > know how can I make it to understand options(digits). It's not a public entry point, and support for options(digits) is in the callers. > Can anybody suggest me a way for this? > > Best wishes, > > Ott > > > BTW, can I be sure that everything defined in /usr/lib/R/include and > R_ext are (more or less) safe to use? No, read R_exts for what is in the API and what is not. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
