[Rd] sysdata.rda, namespaces and package dependencies

Yihui Xie xie at yihui.name
Tue Aug 30 17:06:28 CEST 2011


I struggled with this for a while too, and I have no idea why this
data object is unavailable. Finally I found this can do the trick:

data(munsell_map, package = "munsell")
munsell::mnsl("10B 4/6")
## works

But I still cannot understand this.

Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: 515-294-2465 Web: http://yihui.name
Department of Statistics, Iowa State University
2215 Snedecor Hall, Ames, IA



On Tue, Aug 30, 2011 at 8:27 AM, Hadley Wickham <hadley at rice.edu> wrote:
> Bump.  Any comments on this?
> Hadley
>
> On Tue, Aug 16, 2011 at 10:53 AM, Hadley Wickham <hadley at rice.edu> wrote:
>> Hi all,
>>
>> I'm struggling with accessing a package dataset (munsell.map, stored
>> in sysdata.rda) when that package is imported, not required.  A simple
>> reproducible example is:
>>
>> install.packages("munsell")
>> munsell::mnsl("10B 4/6")
>> # Error in match(col, munsell.map$name) : object 'munsell.map' not found
>>
>> library(munsell)
>> munsell::mnsl("10B 4/6")
>> # Function works correctly
>>
>> Am I doing something wrong, or is this namespace bug?
>>
>> Hadley
>>
>> --
>> Assistant Professor / Dobelman Family Junior Chair
>> Department of Statistics / Rice University
>> http://had.co.nz/
>>
>
>
>
> --
> Assistant Professor / Dobelman Family Junior Chair
> Department of Statistics / Rice University
> http://had.co.nz/
>
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