[Rd] possible bug in co.intervals when overlap=0

From: Benjamin Tyner <btyner_at_stat.purdue.edu>
Date: Fri 15 Dec 2006 - 23:34:57 GMT


I apologize if this is just a misunderstanding on my part, but I was under the impression that the intervals returned by co.intervals should cover all the observations. Yet

x<-1:10
z<-co.intervals(x,overlap=0)

In R, z equals

      [,1] [,2]
[1,] 0.5 1.5
[2,] 2.5 3.5
[3,] 3.5 4.5
[4,] 5.5 6.5
[5,] 7.5 8.5
[6,] 8.5 9.5

Note in particular the second and last element of x are not covered by any of the intervals. In fact S-PLUS gives

     [,1] [,2]
[1,] 1 2
[2,] 3 3
[3,] 4 5
[4,] 6 7
[5,] 8 8
[6,] 9 10

Ben



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