On Fri, 2012-04-13 at 17:46 +0800, Wincent wrote: > Dear useRs, > > I am writing a vignette for a package, which contains long command like this, > >reduce(Lipset_cs,"SURVIVAL",c("GNPCAP", "URBANIZA", "LITERACY", "INDLAB", > >"GOVSTAB"),explain="positive",remainder="exclude",case="CASEID") > It is longer than the width a page and part of it will become "missing". > Currently, I have to manually break the command into multiple lines. > Is there a better way to handle such issue?
Not that I am aware of. > It seems that others have raised similar question which seems to > remain unsolved in a satisfactory fashion. > > Thanks for your kind attention in advance. > 1) use some spacing and format the code over multiple lines reduce(Lipset_cs, "SURVIVAL", c("GNPCAP", "URBANIZA", "LITERACY", "INDLAB", "GOVSTAB"), explain="positive", remainder="exclude", case="CASEID") Isn't that more readable?! Any good R-aware editor should be able to handle appropriate formatting of the code. I *never* write long lines in my editor; I always break the code down to fit roughly into a 72 column editor window. 2) if you want to force Sweave to respect your new formatting, use argument `keep.source=TRUE` for the code chunk. Or set it document wide using \SweaveOpts{option1=value1, option2=value2} etc in the preamble (where optionX is one of the arguments and valueX what you want to set that argument too. Thought IIRC, `keep.source=TRUE` is the default now and as such Sweave will respect your formatting by default now - before it broke lines where it could. In short get out of the habit of writing long lines of R code; you'll be better in the long run laying your code out logically. HTH G -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.