maybe this is easiest way to do it:
x<-c("A","B",NA,NA,"C",NA,NA,NA,NA,"D",NA,NA);
x[is.na(x)]<- "D"; x
thanks
y
Owen Jones-3 wrote:
>
> I have a vector of data (species names) interspersed with NA values
> and I want a function to "fill in the blanks", replacing NA values
> with whatever the last species name was.
>
> For example the vector:
>
> "A","B",NA,NA,"C",NA,NA,NA,NA,"D",NA,NA.
>
> should evaluate to:
>
> "A" "B" "B" "B" "C" "C" "C" "C" "C" "D" "D" "D"
>
>
> I tried to use rle() in a function to do this but have hit a brick wall.
>
> How would YOU do this?
>
> Many thanks,
>
> Owen
>
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>
>
-----
Yasir H. Kaheil
Columbia University
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