line color in plot(SpatialPolygonsDataFrame) [was: maps showing post-Soviet states?]

	  How can one control the color of lines with 
plot(SpatialPolygonsDataFrame)?


	  Adding lwd=9 to the arguments for plot produces black borders so 
wide most of the red disappears:


map(xlim=c(10, 90), ylim=c(30, 60))
library(raster)
ct <- getData("countries")
plot(subset(ct, NAME %in% c("Azerbaijan", "Uzbekistan", "Tajikistan",
                           "Turkmenistan", "Croatia")),
           add=TRUE, col='red', lwd=9)


	  A related question is how can I see the plot function used here? 
Methods dispatch does not take this to plot.default nor to 
plot.SpatialPolygonsDataFrame, as it would with an S3 method.


	  Thanks,
	  Spencer


#########################
     Thanks to Gilles Leduc, Greg Snow, Thomas Adams, Barry Rowlingson, and 
Michael Sumner for their replies.  For the archives, in case someone else 
might find this in the archives, I will record here two solutions to my 
problem.


     1.  Michael's reply was the simplest, especially since it worked with 
"map" adding "add=TRUE" and "col" to the plot:

map(xlim=c(10, 90), ylim=c(30, 60))
library(raster)
ct <- getData("countries")
plot(subset(ct, NAME %in% c("Azerbaijan", "Uzbekistan", "Tajikistan",
                           "Turkmenistan", "Croatia")),
           add=TRUE, col='red')


     2.  Before I saw Michael's reply, I had solved the problem with much 
greater effort:  (1) I downloaded a zip file for each country from 
"www.diva-gis.org/datadown", as suggested by Gilles. (2) Unzipping produced 
folders with names like "..\TWN_adm" and files with names beginning 
"TWN_adm0", "TWN_adm1", and "TWN_adm2" and extensions bdf, prj, sbn, sbx, 
shp, and shx.  I could then get what I wanted with code like the following:


Taiwan0 <- readShapeSpatial("..\TWN_adm0")
map(xlim=c(100, 150), ylim=c(10, 30))
plot(Taiwan0, add=TRUE, col='blue', lwd=3, fill=FALSE)


     Again, thanks for the replies.


On 7/1/2014 4:38 PM, Michael Sumner wrote:

An example:

library(raster)
ct <- getData("countries")
plot(subset(ct, NAME %in% c("Azerbaijan", "Uzbekistan", "Tajikistan",
"Turkmenistan", "Croatia"))




On Wed, Jul 2, 2014 at 9:09 AM, Michael Sumner <mdsumner at gmail.com> wrote:

On Wed, Jul 2, 2014 at 7:56 AM, Thomas Adams <tea3rd at gmail.com> wrote:

Spencer,

Maybe I'm not sure what you're asking but here
http://www.gadm.org/version1
are current shapefiles by country. The highlighting (selection) canals 
be
done in GRASS GIS, QGIS, GMT

  raster::getData can read this. See here http://www.gadm.org/ and

library(raster)
?getData

Tom


On Tue, Jul 1, 2014 at 2:29 PM, Spencer Graves <
spencer.graves at prodsyse.com>
wrote:

       What would you suggest I do to create a world map highlighting
Taiwan and post-Soviet states like Azerbaijan, Uzbekistan, Tajikistan,
Turkmenistan, and Croatia?


       The region argument in maps::map won't recognize any of these, 
and
my literature search identified hundreds of packages with some spatial /
geographical / mapping content.


       Thanks,
       Spencer Graves

--
Michael Sumner
Software and Database Engineer
Australian Antarctic Division
Hobart, Australia
e-mail: mdsumner at gmail.com