search for: tp18697427p18697756

Displaying 1 result from an estimated 1 matches for "tp18697427p18697756".

2008 Jul 28
3
Fill in NA values in vector with previous character/factor
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"