Hi R-listers,
I am using the package plyr. I am just trying to get the hatching success
mean of each nesting event and have typed in the following and received the
below results:
> tapply(HSuccess, Aeventexhumed, mean)
A B C
0.2156265 0.1288559 NaN
What can I do about NaN? I should be able to get a result for event C
because I was able to make a boxplot graph with this information showing all
three nesting events (A, B, and C).
Please advise,
Jean
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