[R] (no subject)

[Padmanabhan, Sudharsha]

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hello all,


I have an array c as follows

1	23	12
1	34	15			
1	45	67
1	45	87
2	78	23
2	65	19
2	45	90
2	70	32


Col 1 indicates treatment, col2 is the observed readings and col3 
is some summary statistic I have calculated after breaking the ties in col 2
arbitrarily.

Now I want to average the statistics of the tied values. So, in col 3 for
each of the reading of 45 , I now want (67+87+90)/3 = 81.33


1	23	12
1	34	15			
1	45	81.33
1	45	81.33
2	78	23
2	65	19
2	45	81.33
2	70	32


Can someone please help me do this in R?

Thanks in advance

Warm regards

~S