Calculating First Occurance by a factor

Thanks! That did it. I should have seen that I needed the comma!

I tried messing with the line df$FixTime[which.min(df$FixInx)] changing
it
to df[which.min(df$FixInx)] or adding new lines with the additional
columns
that I want to include, but nothing seemed to work. I'll admit I only
have a
mild understanding of what is going on with the function .fun. :-)
You probably want:

df[which.min(df$FixInx), ]

Hadley

-- 
http://had.co.nz/

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Calculating First Occurance by a factor

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