[Rd] diag() (PR#555)

[davidD@qimr.edu.au]

Full_Name: David Duffy
Version: 1.0.1
OS: Linux
Submission from: (NULL) (152.98.96.21)


Documentation for diag() states that "If x is a vector (or a
1-d array) then diag(x) returns a diagonal matrix whose diagonal
is x."
> m<-matrix(1:4,ncol=1)
> diag(m)
[1] 1
diag(as.vector(m)) gives the advertised performance.

Fix: Change documentation.

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