Nothing
na_to_minus_99 <- function(vr_out, fmt){
if(grepl('-', fmt[1])){
vr_out <- gsub("(^| )NA( |$)",
"\\1-99",
vr_out,
perl = TRUE)
}else{
vr_out <- gsub("(^| )NA( |$)",
"-99\\2",
vr_out,
perl = TRUE)
}
return(vr_out)
}
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