Dear friends,
 I fail to understand and use the class of "SpatialPointsDataFrame", hope
someone to givems some hints on it.
For example:
 z<-rnorm(16)  # this is attribute data
coords<-cbind(x=c(1,1,1,2,2,2,3,3,3),y=c(1,2,3,1,2,3,1,2,3))   # this is
coordinate data
 How should i use SpatialPointsDataFrame to combine them and generate my
dataset, Thanks a lot!



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Kind Regards,Zhi Jie,Zhang ,PHDDepartment of EpidemiologySchool of Public
HealthFudan UniversityTel:86-21-54237149

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