From pgilbert at bank-banque-canada.ca  Thu Jan 24 16:00:58 2008
From: pgilbert at bank-banque-canada.ca (Paul Gilbert)
Date: Thu, 24 Jan 2008 10:00:58 -0500
Subject: [Rd] Package Building and Name Space
In-Reply-To: <200801231907.57881.johannes_graumann@web.de>
References: <fn7ov3$2d6$1@ger.gmane.org>	<200801231731.00579.johannes_graumann@web.de>	<4797783F.1020309@stats.uwo.ca>
	<200801231907.57881.johannes_graumann@web.de>
Message-ID: <4798A82A.7020003@bank-banque-canada.ca>

I find the error message

 >>>>>Error in MyPackage::MyFunction :

is a bit misleading.  Could it be changed to

     Error in Package::Function

perhaps with a hint: "Possibly Package is not exporting a NAMESPACE."
(At least, I think this does not work unless Package has a namespace.)

Paul Gilbert

Johannes Graumann wrote:
> On Wednesday 23 January 2008 18:24:15 Duncan Murdoch wrote:
> 
>>On 1/23/2008 11:31 AM, Johannes Graumann wrote:
>>
>>>On Wednesday 23 January 2008 17:25:38 Duncan Murdoch wrote:
>>>
>>>>On 1/23/2008 11:11 AM, Johannes Graumann wrote:
>>>>
>>>>>... sorry for reposting this in a more appropriate forum than
>>>>>r.general ...
>>>>>
>>>>>Hello,
>>>>>
>>>>>I just don't get this and would appreciate if someone could write a
>>>>>line or two: I'm trying to build this package and it stops installing
>>>>>after I add
>>>>>
>>>>>the following to the NAMESPACES file:
>>>>>
>>>>>>importFrom(gsubfn,strapply)
>>>>>
>>>>>The error during the package test is:
>>>>>
>>>>>Error in MyPackage::MyFunction :
>>>>>  package 'MyPackage' has no name space and is not on the search path
>>>>>Calls: <Anonymous> ... <Anonymous> -> switch -> sys.source -> eval ->
>>>>>eval -> ::
>>>>>Execution halted
>>>>>
>>>>>'MyFunction' contains 'strapply' from gsubfn.
>>>>>
>>>>>Please tell me where I err.
>>>>
>>>>The file is called NAMESPACE, not NAMESPACES.
>>>
>>>And that's what it's called here ... sorry for the typo above. The error
>>>remains the same.
>>
>>With the obscuring you've done it's pretty hard to be sure, but I'd
>>assume you have the expression MyPackage::MyFunction somewhere in your
>>package, but MyPackage doesn't have a namespace.  In that case, you have
>>to make sure it is attached via
>>
>>library(MyPackage)
>>
>>or
>>
>>require(MyPackage)
>>
>>before you can use the "::" operator.
> 
> 
> But it's "mypackage" I'm trying to check ... can't attach that yet since I 
> need to package and install it first ...
> 
> Joh
> 
> 
> ------------------------------------------------------------------------
> 
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> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
====================================================================================

La version fran?aise suit le texte anglais.

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[Rd] Package Building and Name Space
Paul Gilbert