[R] < 0 x 0 matrix >

[Duncan Murdoch]

Markku Karhunen wrote:
> Hi,
>
> Does anybody know, what is going on here?
>   

diag( x ) produces a round(x) x round(x) identity matrix when x is 
length 1.   (This is the third case listed on the man page ?diag).  See 
the note there about a safer form if you wanted a matrix with x on the 
diagonal.

Duncan Murdoch
>   
>> diag(sqrt(1))
>>     
>       [,1]
> [1,]    1
>   
>> diag(sqrt(0.3333))
>>     
> <0 x 0 matrix>
>   
>> sqrt(1)
>>     
> [1] 1
>   
>> sqrt(0.3333)
>>     
> [1] 0.5773214
>
> BR, Markku Karhunen
> researcher
> University of Helsinki
>
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