sysdata.rda, namespaces and package dependencies

On 30/08/2011 11:27 AM, Hadley Wickham wrote:
Your package is doing something weird, so I think it's you: you are
loading
the munsell.map file via "load.r" in the top level of the package.
That's
not a standard thing to do, and it's not being executed in the first
case.
Put that load statement into one of the files in the R directory and
things
should be fine.
I think that's a red-herring - load.r is for development and is never
run during usual package installation. Or are you saying I need to
explicit load data stored in sysdata.rda within the package?

Sorry, I didn't realize you weren't executing that file. (Should it be
included in the tar? That's a different issue...)

Lazy data is stored in a separate file that is loaded when
library(munsell) is called. It appears it isn't being loaded when you
only use munsell::mnsl to load it but not attach it. Certainly loading
it from one of your .R files would work; I'm not sure if it is
intentional that this is necessary or not. Perhaps someone else will
comment?
This is expected. The data object is not exported from the Namespace and 
hence not loaded if a reference to the Namespace is made without 
*attaching* the package. Hence data(..., package=...) is the way to go.

Uwe
Duncan Murdoch

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sysdata.rda, namespaces and package dependencies

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