Sorry, can't be done at the moment with the maps package.
The "china" map database is based on data which was provided in
latitude/longitude
rectangles, and has not been properly processed to generate the line segments
and
polygons that the maps package uses to choose individual provinces or to
suppress
interior lines.
It's on my TODO list, but quite a way down. :-(
You *might* be able to achieve what you want by selecting only those line
segments that
provide portions of the external border, but I would suggest that other
packages (perhaps
someone will suggest the best) are more likely to be able to provide what you
want
without so much effort.
HTH
Ray Brownrigg
On Fri, 17 Apr 2009, Cuvelier Etienne wrote:
> Hello,
> I use the map package in conjunction with the mapdata package,
> and I want to draw the map of China without interior regions.
> After reading the doc and searched in this mailing list I've tried
> map("china",interior=FALSE)
> and
> map("china",fill=TRUE)
>
> but I allways see the interior regions...
>
> If someone can help me...
> Thanks
> Etienne
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