On Mon, Oct 26, 2009 at 11:22 AM, Dirk Eddelbuettel <e...@debian.org> wrote: > > On 26 October 2009 at 07:57, Martin Morgan wrote: > | Peng Yu wrote: > | > I am reading Section 5 and 6 of > | > http://cran.r-project.org/doc/contrib/Leisch-CreatingPackages.pdf > | > > | > It seems that I have to do the following two steps in order to make an > | > R package. But when I am testing these package, these two steps will > | > run many times, which may take a lot of time. So when I still develop > | > the package, shall I always source('linmod.R') to test it. Once the > | > code in linmod.R is finalized, then I run the following two steps? > | > > | > I'm wondering what people usually do when developing packages. > | > > | > > | > 1. Run the following command in R to create the package > | > package.skeleton(name="linmod", code_files="linmod.R") > | > | Do this once, to get a skeleton. Then edit the R source etc in the > | created package. > | > | > 2. Run the following command in shell to install > | > R CMD INSTALL -l /path/to/library linmod > | > | see R CMD INSTALL --help and use options that minimize the amount of > | non-essential work, e.g., no vignettes or documentation until that is > | the focus of your development, or --libs-only if you are working on C > | code. Use --clean to avoid stale package components. Develop individual > | functions interactively, but write a script > | > | library(MyPackage) > | someFunction() > | > | so that R -f myscript.R allows you to easily load your package and test > | specific functionality in a clean R session. > > With littler you can do without the one-off script as > > $ r -lMyPackage -e'print(someFunction())' > > runs both commands you would have put into script. Hence, I often do > something like > > $ R CMD INSTALL MyPackage/ && r -lMyPackage -e'print(someFunction())'
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