[R] find indices of nonzero elements

[David A Richmond]

Hi,
	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?

for example:
a:
1 0 0 
0 0 1
0 1 0

func(a) returns two vectors r and c:
r c
1 1
2 3
3 2


daver

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|David Richmond                It works on a          |      
+ Dept. of Sociology          complex scientific      + 
|Saint Mary's College          principle, known as    |  
+ Notre Dame, IN 46556               "pot luck."      +
|219-284-4517                    - The Doctor         |
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