Hi Achim, Thanks for pointing us to the code from the colorspace package - a good example of how to keep the citation information up-to-date automatically, something I had not considered...
Heather -- Dr H Turner Senior Research Fellow Dept. of Statistics The University of Warwick Coventry CV4 7AL Tel: 024 76575870 Fax: 024 76524532 Url: www.warwick.ac.uk/go/heatherturner Achim Zeileis wrote: > On Wed, 12 Nov 2008, Michael Friendly wrote: > >>> One could complement that by a >>> url = {http://CRAN.R-project.org/package=tweedie} >> >> In two recent in press articles where I cited R packages, >> I was asked by the copy-editor to add a location or url to the >> references. Could I suggest that citation() be modified to include >> the URL automatically? > > That's a good suggestion and one that I discussed several times with > Kurt. The problem is that citation() only looks at the installed package > which doesn't know where it came from. Thus, I have AFAIK no simple > means of checking whether a particular package I'm using was obtained > from CRAN, Bioc, R-Forge, or some local source package. Hence, the URL > cannot be included automatically. > > I agree that this would be nice to have. One idea would be that the CRAN > maintainer adds a line to the DESCRIPTION file upon release to CRAN. > There are a few ideas how to do this exactly and it's not yet implemented. > > As a package maintainer, however, you can improve the situation for your > own packages by writing a CITATION file that has the CRAN URL in it. For > example, the first citEntry() in the "colorspace" package has: > > ## R >= 2.8.0 passes package metadata to citation(). > if(!exists("meta") || is.null(meta)) meta <- > packageDescription("colorspace") > year <- sub("-.*", "", meta$Date) > note <- sprintf("R package version %s", meta$Version) > > citEntry(entry = "Manual", > title = "{colorspace}: Color Space Manipulation", > author = personList(as.person("Ross Ihaka"), > as.person("Paul Murrell"), > as.person("Kurt Hornik"), > as.person("Achim Zeileis")), > year = year, > note = note, > url = "http://CRAN.R-project.org/package=colorspace", > > textVersion = > paste("Ross Ihaka, Paul Murrell, Kurt Hornik, Achim Zeileis", > sprintf("(%s).", year), > "colorspace: Color Space Manipulation.", > paste(note, ".", sep = ""), > "URL http://CRAN.R-project.org/package=colorspace") > ) > > Best wishes, > Z > >> In the function, this would entail replacing the line >> >> z$url <- meta$URL >> >> with something like >> >> z$url <- if (is.null(meta$URL) >> paste("http://CRAN.R-project.org/package=", package, sep="") else >> meta$URL >> >> I say "something like" because I'm not sure how to handle other >> repositories. >> >> Along similar lines, someone recently posted a script to generate >> a .bib file for all packages installed. It would be useful if someone >> were to implement that script for CRAN and make the resulting >> R-packages.bib file available on the CRAN site. >> >> -Michael >> >> >> -- >> Michael Friendly Email: friendly AT yorku DOT ca >> Professor, Psychology Dept. >> York University Voice: 416 736-5115 x66249 Fax: 416 736-5814 >> 4700 Keele Street http://www.math.yorku.ca/SCS/friendly.html >> Toronto, ONT M3J 1P3 CANADA >> >> >> > > ______________________________________________ > 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. ______________________________________________ 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.