Hi there,

I tried to add a coastline that is imported from a shapefile to a xyplot of
sample points, but I got an error message. 

 

> library(lattice)

> library(maptools)

> xyplot(mud$lat~mud$long, asp="iso", type="p", pch=1, cex=0.01, xlab="",
ylab="") 

> 

> plot(coastline, add=T)

Error in plot.xy(xy.coords(x, y), type = type, ...) : 

        plot.new has not been called yet

>

I also tried using plot.new=TRUE in the xyplot and got the same message.

 

I could get a plot from only using plot(coastline),  but could not add it to
the existing xyplot.

 

Thanks in advance.

Jin

 


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