Edzer Pebesma a écrit :
> Patrick Giraudoux wrote:
>   
>> Dear listers,
>>
>> I would like to add the border of  a country (SpatialPolygons object
>> called ChinaBorder) in a spplot built as following:
>>
>> mypal<-colorRampPalette(c("white", "cyan",
>> "blue","green","yellow","red"))
>> statSpat<-SpatialPointsDataFrame(chinagrid,data.frame(n=z))
>> gridded(statSpat)<-TRUE
>> spplot(statSpat,col.regions=mypal)
>>
>> I cannot managed to overlap ChinaBorder to statSpat with the 'panel'
>> argument of spplot.
>>
>> Any idea about how to proceed ?
>>     
> Patrick, you might want to try
>
> spplot(statSpat, col.regions = mypal, sp.layout = list("sp.polygons",
> ChinaBorder))
>   
>> P


Exactly what I need (the way to state was unclear to me in the doc), 
except the image is overlapping the border when I would like to get the 
reverse (the contour over the image). Is there a way to make it ?

Cheers,

Patrick

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