Dear list,

In the documentation about SpatialPolygons-class (code is given below) what does the line

Srs3 = Polygons(list(Sr3, Sr4), "s3/4") mean and why is it needed  ?

Thanks a lot in advance,

Juliane

Sr1 = Polygon(cbind(c(2,4,4,1,2),c(2,3,5,4,2)))
Sr2 = Polygon(cbind(c(5,4,2,5),c(2,3,2,2)))
Sr3 = Polygon(cbind(c(4,4,5,10,4),c(5,3,2,5,5)))
Sr4 = Polygon(cbind(c(5,6,6,5,5),c(4,4,3,3,4)))
Srs1 = Polygons(list(Sr1), "s1")
Srs2 = Polygons(list(Sr2), "s2")
Srs3 = Polygons(list(Sr3, Sr4), "s3/4")
SpP = SpatialPolygons(list(Srs1,Srs2,Srs3))
plot(SpP, col = 1:3, pbg="white")



Dr. Juliane Struve
Fisheries and Aquatic Sciences
7922 NW 71st Street, Gainesville, FL 32653
352-273-3632 (tel)
352-392-3672 (fax)
email: jstruve@ufl.edu<mailto:jstruve@ufl.edu>



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