Thanks, that looks great. Looking for other options I found a way to do something I had not originally considered, but like even better now. My original purpose on this was a string with some tabs in it that when the function was viewed without the source were turned into "\t" which looked ugly and partly countered what I was trying to do.
My current attempt can be seen by looking at the 'petals' function in the development version of the TeachingDemos package on R-Forge. It works great on windows, now I just need to find some people to test it on Mac and Linux to make sure that everything is doing what it should there. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk] > Sent: Sunday, April 10, 2011 4:52 AM > To: Greg Snow > Cc: R-devel@r-project.org > Subject: RE: [Rd] Use keep.source for function in package with lazy > loading > > R-devel now has a KeepSource DESCRIPTION field to accomplish what I > think you are seeking. > > On Tue, 5 Apr 2011, Greg Snow wrote: > > > Prof. Ripley, > > > > Thanks for the explanation. I had set both keep.source and > keep.source.packages to TRUE for my experiments, but had not realized > that a new R process would be involved, so did not try the > environmental variable approach. > > > >> From what you say below, I don't think I am going to accomplish what > I wanted, since I want the source to show for users other than myself > and there does not seem to be a reasonable way to change the users > environment before installing my package (that is getting a bit too big > brother to even think about). I was hoping that there might be some > switch somewhere that I had missed that would say keep the source for > this function even though the default is not to. But, it does not look > like there is anything like that, and it is not worth implementing just > for my one little use. > > > > Hmm, maybe I can set the source manually using .onAttach, I'll have > to experiment some more. > > > > Thanks, > > > > -- > > Gregory (Greg) L. Snow Ph.D. > > Statistical Data Center > > Intermountain Healthcare > > greg.s...@imail.org > > 801.408.8111 > > > > > >> -----Original Message----- > >> From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk] > >> Sent: Monday, April 04, 2011 3:41 PM > >> To: Greg Snow > >> Cc: R-devel@r-project.org > >> Subject: Re: [Rd] Use keep.source for function in package with lazy > >> loading > >> > >> On Mon, 4 Apr 2011, Greg Snow wrote: > >> > >>> I have a function in one of my packages that I would like to print > >>> using the original source rather than the deparse of the function. > >>> The package uses lazy loading and the help page for library (under > >>> keep.source) says that keep.source does not apply to packages that > >>> use lazy loading and that whether those functions keep the source > >>> depends on when they are installed. > >> > >> Not quite: it is says it is 'determined when it is installed'. > >> > >> For a package that does not use lazy loading, what is installed is a > >> file of R code. When library() loads such a package, it sources() > the > >> R code, and at that point has the option to keep the source or not > >> (for that R session). > >> > >> For a package which uses lazy loading, the source()ing happens when > >> the package is installed: the objects created are then dumped into a > >> database. Whether the source attribute is retained at that point > >> depends on the setting of the option "keep.source.pkgs". So if you > can > >> arrange to install the package with that option set to true, in > >> principle (and in my experiments) the source attributes are > retained. > >> > >> The easiest way to do this would seem to be to set the environment > >> variable R_KEEP_PKG_SOURCE to "yes" whilst installing the package. > >> > >>> This package is on R-forge and is being built there (and will > >>> eventually be used to submit the next version of the package to > >>> CRAN). > >>> > >>> I am not sure what the help means by 'installed', I have set the > >>> options to keep the source to TRUE before calling install.package, > >>> but that does not seem to work. > >> > >> I presume you mean keep.source.pkgs, not keep.source? That needs to > >> be set in the process which is installing the package: > >> install.packages() calls R CMD INSTALL in a separate process. > >> > >>> Is there a way to "strongly encourage" the source to be kept for > >>> this function (or the entire package)? > >>> > >>> Thanks, > >>> > >>> -- > >>> Gregory (Greg) L. Snow Ph.D. > >>> Statistical Data Center > >>> Intermountain Healthcare > >>> greg.s...@imail.org > >>> 801.408.8111 > >> > >> -- > >> Brian D. Ripley, rip...@stats.ox.ac.uk > >> 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 > > > > -- > Brian D. Ripley, rip...@stats.ox.ac.uk > 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-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
