On Fri, 23 Dec 2005, Berwin A Turlach wrote: > G'day Leif, > >>>>>> "LK" == Leif Kirschenbaum <[EMAIL PROTECTED]> writes: > > LK> How do I do this such that I can specify FOO to be one of > LK> several choices? (GDD, PNG, postscript, etc.) If I make FOO a > LK> character variable, then "dev.print" complains. > Mmh, I am not sure what the complaint of R 2.2.0 on MS Windows is, but > I guess it is the same as under linux: > >> DEVw=500 >> DEVh=350 >> fname="my_plot" >> plot(rnorm(300)) >> FOO <- "png" >> dev.print(file=fname, device=FOO, width=DEVw, height=DEVh, bg="transparent") > Error in dev.copy(device = "png", file = fname, width = DEVw, height = DEVh, > : > 'device' should be a function > > Which is very informative. `device' is supposed to be a function, not > a character variable, thus: > >> FOO <- png >> dev.print(file=fname, device=FOO, width=DEVw, height=DEVh, bg="transparent") > X11 > 2 >> FOO <- pdf >> dev.print(file=fname, device=FOO, width=DEVw, height=DEVh, bg="transparent") > X11 > 2 > > all seem to work.
And my guess is that Leif wants to be able to do mydevice <- "png" dev.print(device = get(mydevice), ...) ^^^ -- 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 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html