Berwin A Turlach wrote: > Did you think of trying some variations of "na.strings"? ;-) > > IMO, the simplest way of coding missing values in CSV files is to have > two consecutive commas; not some code (whether NA, 99, 999, -1, ...) > between them.
Yes. Arguably, na.strings=NULL should be the default (and na="" for write.csv) since delimited formats are (mainly) for communicating with external programs, which are not likely to use the NA code (unless it is for Namibia, North America, Noradrenalin, Niels Andersen, etc.) However, back compatibility (including that with files written with R's own write.csv) probably precludes changing anything at this point. Notice that read.csv and friends do pass "..." to read.table, so it is easy to override the default setting. -- Peter Dalgaard Center for Statistics, Copenhagen Business School Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
