From moshersteven at gmail.com  Fri Sep 23 18:57:45 2011
From: moshersteven at gmail.com (steven mosher)
Date: Fri, 23 Sep 2011 09:57:45 -0700
Subject: [Rd] "could not find function" after import
In-Reply-To: <4E77D9C3.1070307@gmail.com>
References: <4E77AA8D.2040409@u.washington.edu> <4E77D9C3.1070307@gmail.com>
Message-ID: <CAFFLneR_tuCSx0GG9jZBz4oF9ysnVTz5Ut8P6gQ_LW2aNcXNmA@mail.gmail.com>

Duncan

I have a related question.

I need one function from R.utils.  But R.utils depends on R.oo and  R.methodsS3.
so I made R.util an import and then used importFrom() in the namespace.

The package passed the  "check".  However when it came to use the function
it had not been loaded? do I need to add the upstream packages that
R.util  depends
upon?  also in the code do I need a library or require?

A bit confused

Steve

On Mon, Sep 19, 2011 at 5:09 PM, Duncan Murdoch
<murdoch.duncan at gmail.com> wrote:
> On 11-09-19 4:48 PM, Stephanie M. Gogarten wrote:
>>
>> I am trying to build a package (GWASTools, submitted to Bioconductor)
>> that uses the "sandwich" package. ?I have references to "sandwich" in
>> DESCRIPTION:
>> Imports: methods, DBI, RSQLite, sandwich, survival, DNAcopy
>>
>> and NAMESPACE:
>> import(sandwich)
>>
>> In the code itself is a call to vcovHC:
>> Vhat<- vcovHC(mod, type="HC0")
>>
>> I have sandwich version 2.2-7 installed.
>>
>> When I run R CMD check on my package, I get the following error during
>> checking of examples:
>> * using R Under development (unstable) (2011-08-29 r56828)
>> * using platform: x86_64-apple-darwin9.8.0 (64-bit)
>> ...
>> * checking examples ... ERROR
>> ...
>> Error in estfun.glm(x) : could not find function "is.zoo"
>> Calls: assocTestRegression ... meatHC -> ?rowMeans -> ?is.data.frame ->
>> estfun -> ?estfun.glm
>>
>> I import sandwich, sandwich depends on zoo, but a function in zoo cannot
>> be found during execution.
>>
>> I tried to get around this by explicitly including a "require" statement
>> in assocTestRegression:
>> require(sandwich)
>>
>> The example now runs, but I have a warning in R CMD check:
>> * checking for unstated dependencies in R code ... WARNING
>> ?library? or ?require? call not declared from: ?sandwich?
>>
>> I am not sure why this is a problem, as there is a "require" statement
>> (for a different package) in another function which does not cause any
>> warnings.
>>
>> Can anyone advise on how to get my package to successfully pass R CMD
>> check?
>>
>
> If you said that your package Depends on sandwich, you'd probably pass
> checks, but this is arguably a bug in the sandwich package.
>
> The problem is that since you only import sandwich, it never gets attached.
> ?So it never attaches its dependency zoo. ? It should import zoo (or import
> the functions in zoo that it uses) to work properly the way you are calling
> it.
>
> You can see the same error as follows:
>
> 1. ?Install sandwich, but don't attach it or zoo.
>
> 2. ?Run
>
> example(glm)
>
> to create the "glm" object glm.D93.
>
> Try to call
>
> sandwich::estfun(glm.D93)
>
> You'll get the same error as before because is.zoo() will not be loaded.
>
> It's also arguably a design flaw in R. ?For testing sandwich, zoo would
> generally end up being attached, because the testing of sandwich would
> attach it. ?However, examples like the one above are never tested.
>
> Duncan Murdoch
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>



[Rd] "could not find function" after import
steven mosher