From murdoch.duncan at gmail.com  Sat Feb  1 14:57:45 2014
From: murdoch.duncan at gmail.com (Duncan Murdoch)
Date: Sat, 01 Feb 2014 08:57:45 -0500
Subject: [Rd] Running examples with R5 constructor from package failing
In-Reply-To: <f8ca6be3-14d2-4c71-b07f-6190f853eedf@me.com>
References: <f8ca6be3-14d2-4c71-b07f-6190f853eedf@me.com>
Message-ID: <52ECFD59.6020302@gmail.com>

On 14-01-31 10:14 PM, Imanuel Costigan wrote:> I am having an issue with 
reference classes (R5) in a package I am developing. They have both been 
illustrated in the `roxygentest` package I've got hosted on Github [1].
 >
 > When I run `R CMD check .` on the source directory of my package I am 
told that:
 >> Error: could not find function "Blob"
 >
 > However, when I install and load the package, I can successfully run 
the command in the example.
 >
 > Does someone know why this is happening?
 >
 > The relevant definitions and the example (in Rd format):
 >
 > R5 definition:
 > ```
 > draw.Blob <- function (type = 'small')
 > {
 >    'Something about blobs'
 >    type <<- 'small'
 > }
 >
 > Blob <- setRefClass (
 >    Class = "Blob",
 >    fields = list(type = 'character'),
 >    methods = list(draw = draw.Blob)
 > )
 > ```
 >
 > Example:
 > ```
 > \examples{
 > Blob(type = 'small')
 > }
 > ```

The symptoms make it look as though the *function* Blob is not exported. 
  I see in your source that you do export the *class* Blob, but the docs 
don't make it clear to me that this also implies export of the generator 
function.

So I'd add

export(Blob)

to your NAMESPACE.  I just checked another package that exports a class, 
and it separately exported the generator function, so I guess this is known.

Duncan Murdoch



[Rd] Running examples with R5 constructor from package failing
Duncan Murdoch