Hi Srini,
This may be as simple as tapply(weight,fruit,max)
or t(that) if you want it as you specified.
--Adam
On Sun, 7 Sep 2008, Srinivas Iyyer wrote:
dear group,
i have a data matrix with some replicate items with different values. I want to
extract the row with max value.
for example:
x
fruit weight
1 apple 1.3
2 apple 1.5
3 apple 1.6
4 orange 1.4
5 orange 1.6
x is a data frame.
I want to extract unique items from fruits that has max weight.
that is:
3 apple 1.6
5 orange 1.6
I want to be able to use apply functions. Could some one lend some help please.
Thanks
srini
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