[R] system.file(...) self-referencing the containing package
murdoch.duncan at gmail.com
Fri Dec 4 18:24:21 CET 2015
On 04/12/2015 11:28 AM, Murat Tasan wrote:
> Perfect, thanks!
> (Any idea if/where this is documented? I checked through the "Writing
> R Extensions" doc and couldn't find any mention of it.)
It is mentioned in ?getPackageName:
" (Currently, the name is stored as the object |.packageName| but don't
trust this for the future.)"
The more trustworthy approach is to use packageName() or getPackageName().
> Thanks much again,
> On Thu, Dec 3, 2015 at 6:42 PM, William Dunlap <wdunlap at tibco.com> wrote:
> > Every package has in it, after it is installed, a character object
> > called ".packageName" containing its name. It is not exported from
> > the package. Functions in your package can refer to it as just
> > .packageName.
> > Bill Dunlap
> > TIBCO Software
> > wdunlap tibco.com
> > On Thu, Dec 3, 2015 at 5:28 PM, Murat Tasan <mmuurr at gmail.com> wrote:
> >> In a package I'm writing, I'm placing all SQL code here:
> >> /inst/sql/
> >> And so when referring to these blocks of code from the package's R
> >> code, I do something like so:
> >> system.file("sql", "my_example_file.sql", package = "ThisPackage",
> >> mustWork = TRUE)
> >> But, referring to the package itself with the string "ThisPackage" is
> >> annoying and somewhat brittle... if the package were ever to change
> >> names (e.g. during development), I'll have to replace all such calls
> >> with the new package name.
> >> And generally referring to the package containing the code itself by
> >> name seems inelegant.
> >> Anyone know of a safe way to reference additional files in a package,
> >> from within that package's code, that doesn't require specifying the
> >> name of the package as a string?
> >> Cheers,
> >> -Murat
> >> ______________________________________________
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> >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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