R: checking for defined values in subset()
Trying to get a subset of a data frame based on, to borrow from SQL, values that are not null. Trying something like:

    lately <- subset(data, year > 1997 & myvalue != NA)

But that's not right. Any tips, r'sters?

R: checking for defined values in subset()
===

Trying to get a subset of a data frame based on, to borrow from SQL, values that are not null. Trying something like:

    lately <- subset(data, year > 1997 & myvalue != NA)

But that's not right. Any tips, r'sters?
