I just noticed that read.table() and type.convert() interpret the string "i"
as a missing value of type complex.
> str(read.table(text=c("i\ni\ni\ni\n")))
'data.frame': 4 obs. of 1 variable:
$ V1: cplx NA NA NA ...
> str(type.convert("i"))
cplx NA
If there are other strings in the column it makes the column character so
most people will not notice
> str(read.table(text=c("i\nii\niii\niv\n")))
'data.frame': 4 obs. of 1 variable:
$ V1: Factor w/ 4 levels "i","ii","iii",..: 1 2 3 4
Is this intended? It surprised me.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
[[alternative HTML version deleted]]
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
