This is fixed/changed in r-devel:
> str(type.convert("i"))
Factor w/ 1 level "i": 1
It was reported on July 18 as PR#16473, if you care.
(Funny how an obscure issue goes unnoticed for a decade, then pops up twice
independently within a few months. A property of the Poisson process, I
suppose.)
> On 07 Oct 2015, at 22:22 , William Dunlap <wdun...@tibco.com> wrote:
>
> 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]]
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
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