On 25 January 2014 at 20:26, Axel Urbiz wrote:
| Dirk and Uwe, many thanks both for your responses. I'm still having the same
| issue. Here's in more detail:
|
| As Dirk suggested, I've done the following:
|
| * I've created a package named {foo}.
|
| * {foo} only has one file named test.R which includes exactly the following
| code:
|
|
| multiply <- function(x,y) x * y
|
| timestwo <- function(x) multiply(x, 2)
|
| * I've modified the NAMESPACE to include ONLY the following line:
|
| export(multiply)
|
| * I've successfully built and installed the foo package
|
| * Then in R I got this:
|
| > library(foo)
|
| > multiply(2,3)
|
| [1] 6
|
| > timestwo(2)
|
| Error: could not find function "timestwo"
|
| >
|
| * However, if in the NAMESPACE I write instead export(multiply, timestwo),
then
| I don't get the error above.
That. Works. As. Designed. And. Documented.
Case 1) You _export only multiply_. Hence timestwo is not found. Hint:
learn about the difference between '::' and ':::' as well.
Case 2) You _export both_. Both are found.
No mystery. What other effect do you expect export() to have?
Dirk
|
| * btw, here's my session info
|
| > sessionInfo()
|
| R Under development (unstable) (2014-01-17 r64821)
|
| Platform: x86_64-apple-darwin10.8.0 (64-bit)
|
| locale:
|
| [1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8
|
| attached base packages:
|
| [1] stats graphics grDevices utils datasets methods base
|
|
| other attached packages:
|
| [1] foo_1.0
|
|
| Thanks,
|
| Axel.
|
|
|
|
|
|
|
|
| On Sat, Jan 25, 2014 at 4:32 PM, Uwe Ligges <lig...@statistik.tu-dortmund.de>
| wrote:
|
|
|
| On 25.01.2014 14:53, Dirk Eddelbuettel wrote:
|
|
| On 25 January 2014 at 14:38, Axel Urbiz wrote:
| | Hello,
| |
| | I'm building a package. My code is stored in foo.R. This code has
two
| | functions FUN1 and FUN2. FUN1 calls FUN2. FUN1 is listed in export()
| under
| | the package NAMESPACE but NOT FUN2. After building the package when
I
| call
| | FUN1 is giving me an error that cannot find FUN2.
|
| Then you are doing something wrong in building, or possibly testing,
| the package.
|
|
|
| I guess you have FUN1 in your Workspace and using that rather than the one
| in your package.
|
| Uwe Ligges
|
|
|
|
| "Everything within" can see everything else.
|
| | I solved this by adding FUN2 in the export() NAMESPACE. However,
what
| is
| | puzzling me is that I have other examples similar to the above
(i.e.,
| one
| | function calling another but only one exported) in the same package
| where I
| | don't get the error message.
| |
| | Any idea of why that might be the case? My understanding is that
| export
|
| We cannot tell without seeing the code.
|
| I suggest you spend two minutes with package.skeleton(), create an
| empty
| package, put something like these two functions in
|
| multiply <- function(x, k) x * k
|
| timestwo <- function(x) multiply(x, 2)
|
| to convince yourself that timestwo() can in fact use multiply().
|
| | only controls what is visible to the end user but functions not
| listed in
| | export() are still "usable" within the package.
| |
| | In this case, the reason I'd like to avoid to export FUN2 is so I
| don't
| | have to add it in the package documentation.
| |
| |
| | Any guidance is much appreciated.
| |
| | Regards,
| | Axel.
| |
| | [[alternative HTML version deleted]]
| |
| | ______________________________________________
| | R-devel@r-project.org mailing list
| | https://stat.ethz.ch/mailman/listinfo/r-devel
|
|
|
--
Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com
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