Hi Markus,
I read through the "Writing R Extensions" document and am able to now create
my own packages/libraries which so far are just well documented collections
of my own R functions. I use package.skeleton() and the tools package to
build these packages.
However, it is not clear to me how to modify and update a package after its
initial creation. How do you elegantly update e.g. the old help file when
one added an argument to a function ? How do you keep most of the existing
package structure when implementing incremental changes ?
Generally speaking you will have your package in a directory we will
call PKG_ROOT here, with (more or less) the following structure
PKG_ROOT
`- inst
`- man
`- R
`- DESCRIPTION
`- NAMESPACE
If you want to update the package, you edit the help files, the R files,
etc. in their respective folders and when you're finished you can build,
check and/or install the package using
R CMD build PKG_ROOT
R CMD check PKG_ROOT
R CMD INSTALL PKG_ROOT
or what is appropriate for your platform. To build
a Windows binary package, e.g. you will need
R CMD INSTALL --build PKG_ROOT
For this to work you will need R to work from
the commandline (add it to your PATH). On Windows
you also need to have installed the R
Windows Toolset provided by Duncan Murdoch at
http://www.murdoch-sutherland.com/Rtools/
If you would like to keep track of the changes
from package version to package version, you
can maintain a NEWS or ChangeLog file in the
inst/ package directory.
HTH,
Tobias
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