[R-sig-Geo] conversion to polygons

[Luis Ridao Cruz]

R-Sig-Geo help,

I have an objct of class "SpatialPointsDataFrame"
which I woul like to convert to polygon.

I have used the following:

test1<-Polygon(test)
test2<-SpatialPolygons(list(test),1)
plot(test2,col=2,pbg="white")

but I get en error message like this:

Error in as.list(X) : cannot get a slot ("Polygons") from an object of
type "double"

I also try ploting:

plot(test1)

which gives :

Error in plot.window(xlim, ylim, log, asp, ...) : 
        need finite 'xlim' values
In addition: Warning messages:
1: no non-missing arguments to min; returning Inf 
2: no non-missing arguments to max; returning -Inf 
3: no non-missing arguments to min; returning Inf 
4: no non-missing arguments to max; returning -Inf 




Thank you in advance