Returns a number of useful character strings with varying amount of spaces prepended.
It can be used as na.strings=na9() in read.table.
Usage
na9(nspace = 5, base = c("-9999", "-999", "-99", "-9.99", "-9.9", "-9,99", "-9,999"), more = NULL, ...)
Arguments
nspace
number of spaces prepended. DEFAULT: 5
base
basic na.string structures. Might be expanded in the future. Thankful for suggestions. DEFAULT: c("-9999","-999", "-99", "-9.99", "-9.9", "-9,99", "-9,9")
more
More structures added to base, like "NA", "--". DEFAULT: NULL