[R] find indices of nonzero elements

[Jason Turner]

> 	Is there a function func(x) where x is an array such that it
> returns a list of the indices of all non-zero elements of the array?
> 
which()
eg.

> a<-matrix(c(1,0,0,0,0,1,0,1,0),ncol=3)
> a
     [,1] [,2] [,3]
[1,]    1    0    0
[2,]    0    0    1
[3,]    0    1    0
> which(a != 0, arr.ind=TRUE)
     row col
[1,]   1   1
[2,]   3   2
[3,]   2   3

That do?

Cheers

Jason
-- 
Indigo Industrial Controls Ltd.
64-21-343-545
jasont at indigoindustrial.co.nz
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