Reinsert Na into vector
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Java
I have a value vector containing Na These values need to be processed by an external program that cannot process Na, so they are stripped, written to a file, processed, and then read back to produce a vector of non Na quantity length For example, if the input is 734 Na 546 Na 1 Na, the output will only be 7 values What I need to do is reinsert the Na into place
Therefore, two vectors X and y are given:
> X [1] 64 1 9 100 16 NA 25 NA 4 49 36 NA 81 > Y [1] 8 1 3 10 4 5 2 7 6 9
Production:
8 1 3 10 4 NA 5 NA 2 7 6 NA 9
(you may notice that x is y ^ 2, which is just an example)
I can type out a function to do this, but I wonder if there is any good cunning way to do this... Split, list, length... Um
Solution
Another variation of the same subject
rena <- function(X,Z){ X[which(!is.na(X))]=Z X }
R automatically fills the rest with Na
Editor: Marek revised
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