Re: [R] Fill in NA values in vector with previous character/factor

From: Yasir Kaheil <kaheil_at_gmail.com>
Date: Mon, 28 Jul 2008 12:36:13 -0700 (PDT)

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
>
> ______________________________________________
> R-help_at_r-project.org mailing list
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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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