Hello,
In a dataframe, I want the index if the last non-NA data. Example:
d<-data.frame(matrix(c(1,3,4,2,7,8,1,NA,2),3,3,byrow=TRUE))
gives:
> d
X1 X2 X3
1 1 3 4
2 2 7 8
3 1 NA 2
I want a vector that gives me 3 2 3
I know about tail and which, but I don't know how not to consider the NA
e.g.: last<-tail(d,1,na.rm=TRUE) still gives me a NA
> last
X1 X2 X3
3 1 NA 2
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