Please do read the documentation, in this case the `Writing R Extensions
Manual. The para starting
An optional @samp{Collate} field (or OS-specific variants
@[EMAIL PROTECTED], such as e.g.@: @samp{Collate.windows}) can
be used for controlling the collation order for the R code files in a
package when these are concatenated into a single file upon installation
from source. The default is to try collating according to the @samp{C}
locale.
explains how to set the collation order.
On Thu, 22 Jul 2004, Shin, Daehyok wrote:
> While installing my small package, I met a tricky problem.
> For clarity, let me explain it with the following simplified example.
>
> In ~/pkg/R/aclass.R,
> setClass(�aclass�, contains=�bclass�, representation(i=�numeric�))
>
> In ~/pkg/R/bclass.R,
> setClass(�bclass�, representation(j=�numeric�))
>
> After building a �pkg� package, the file pkg.R in R directory has:
>
> setClass(�aclass�, contains=�bclass�, representation(i=�numeric�))
> setClass(�bclass�, representation(j=�numeric�))
>
> When combining the source files, R seems to generate one new source file
> based on alphabetic orders of file names. In this case, loading the "pkg"
> package failed with the following error message.
>
> > library(pkg)
> Error in methodsPackageMetaName("C", name) :
> The name of the object (e.g,. a class or generic function) to find
> in the meta-data must be a single string (got an object of class "NULL")
> > traceback()
> 12: methodsPackageMetaName("C", name)
> 11: classMetaName(Class)
> 10: getClassDef(Class, where)
> 9: getClass(cl, TRUE)
> 8: .validDataPartClass(clDef, name)
> 7: reconcilePropertiesAndPrototype(name, slots, prototype, superClasses,
> where)
> 6: makeClassRepresentation(Class, properties, superClasses, prototype,
> package, validity, access, version, sealed, where = where)
> 5: setClass("aclass", contains = "bclass", representation(i = "numeric"))
> 4: eval(expr, envir, enclos)
> 3: eval(i, envir)
> 2: sys.source(codeFile, loadenv, keep.source = keep.source)
> 1: library(pkg)
>
> I suspect the reason is that class �bclass� is not defined when class
> �aclass� is defined. To maintain source files effectively, I don�t want to
> combine two files into one file or change their file names.
>
> Surely, there may be elegant solutions for this somewhat trivial issue. But,
> I can�t find it. Can you help me? Thanks.
>
> Daehyok Shin
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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