Can anybody help me write a code on the following data example, which
fills out all NA values by using a linear interpolation with the two
closest values?
 
Doy is day of year (%j).
 
Code example:
yr<-c(rep(2000,14))
doy<-c(16:29)
dat<-c(3.2,NA,NA,NA,NA,NA,NA,5.1,NA,NA,NA,NA,NA,4.6)
ta<-cbind(yr,doy,dat)
 
ta
      yr doy dat
 [1,] 2000  16 3.2
 [2,] 2000  17  NA
 [3,] 2000  18  NA
 [4,] 2000  19  NA
 [5,] 2000  20  NA
 [6,] 2000  21  NA
 [7,] 2000  22  NA
 [8,] 2000  23 5.1
 [9,] 2000  24  NA
[10,] 2000  25  NA
[11,] 2000  26  NA
[12,] 2000  27  NA
[13,] 2000  28  NA
[14,] 2000  29 4.6
 
Anette Norgaard 

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