[R] map of china without regions
Roger Bivand
Roger.Bivand at nhh.no
Fri Apr 17 13:13:21 CEST 2009
Ray Brownrigg <Ray.Brownrigg <at> ecs.vuw.ac.nz> writes:
>
> Sorry, can't be done at the moment with the maps package.
>
...
>
> 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.
You could subset from the mapdata worldHires dataset:
map("worldHires","china",fill=TRUE, col="transparent")
or alternatively for a similar geographical footprint:
library(maptools)
data(wrld_simpl)
plot(wrld_simpl[wrld_simpl$ISO2 %in% c("CN", "TW"),])
depending on your needs.
Roger Bivand
>
> 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.
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