On Jan 9, 2012, at 9:06 AM, Andrew Gaska wrote:
Thanks for your answer!
There is one thing I could not find in aggregate():
I want to have it a sum for each group of 2008,2009 and 2010. In
aggregate() I can sum all the rows that have a rowname 2008, all
the rows
that have a rowname 2009 and all the rows that have a rowname 2010.
But I want to have it summed separately each time a new group
starts, so not
like this:
2008 24 20 16
2009 19 12 17
2010 16 19 13
but like this:
2008 15 12 10
2009 9 3 7
2010 10 14 10
2008 9 8 6
2009 10 9 10
2010 6 5 3
You appear to be changing your request. If you want an unambiguous
anser submit an unambiguous dataset. Use dput() on hte datafame or
matrix and then we can all be on the same page.
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