[R-SIG-Mac] Data editor replacing empty strings by NA

[Ruth Ripley]

Dear All,

I have a data frame with empty strings in some cells. If I use fix() in 
R.app I get the strings replaced by NA. If use fix() in a terminal (I 
get an X window) I do not. No editing in either case.

mydf <- data.frame(x=rep("",3), y=1:3, stringsAsFactors=FALSE)
mydf
fix(mydf)
mydf

sessionInfo() is:
R version 2.14.1 (2011-12-22)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

locale:
[1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

This appears to be a recent change of behavior in R.app.

I can work around this, but suspect it is not the intended behavior.

Regards,

Ruth
-- 
Ruth M. Ripley,                         Email:ruth at stats.ox.ac.uk
Dept. of Statistics,                    http://www.stats.ox.ac.uk/~ruth/
University of Oxford,                   Tel:   01865 282857
1 South Parks Road, Oxford OX1 3TG, UK  Fax:   01865 272595