> Is it possible to get object where missing values aren't replaced with NAs?
Not with read.table, if they are really missing. But you can replace them later
- see below - and if they are marked you can change what read.table considers
to be 'missing'.
> Is it possible to replace NAs with empty space?
NA _is_ an 'empty space', in the sense of a correctly recorded missing value.
If you mean some other kind of empty space - perhaps the string "" - that's not
missing, just empty (!).
But with a vector containing NA's, like
( x <- c(NA, NA, letters[1:5]) )
you can do things like
x[is.na(x)] <- "Empty Space"
x
or
x[is.na(x)] <- ""
S Ellison
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