Hello,
I have a bug in my data that read.csv doesn't like, but _only_ when
specifying "na.strings = 'missing'". If I delete the offending
Chinese
characters the problem goes away as well. I'm satisfied that the
problems with this data file are fixed, but is there anything I can to
do avoid this in the future (other than avoiding Chinese characters).
Any ideas as to what is going on here? I've attached the piece of the
data file I used for the example below.
Best,
Randy
> read.csv('../data/tmp.csv')
Smoking_status Age_start_smoking Pack_day
1 0
2 0
3 missing missing missing
4 1 18 \xc9\xd9\xc1\xbf
5 1 20 1
> read.csv('../data/tmp.csv', na.strings = 'missing')
Error in type.convert(data[[i]], as.is = as.is[i], dec = dec,
na.strings = character(0)) :
invalid multibyte string
> sessionInfo()
R version 2.6.1 (2007-11-26)
i386-apple-darwin9.1.0
locale:
en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
>
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Randall C Johnson
Bioinformatics Analyst
SAIC-Frederick, Inc (Contractor)
Laboratory of Genomic Diversity
NCI-Frederick, P.O. Box B
Bldg 560, Rm 11-85
Frederick, MD 21702
Phone: (301) 846-1304
Fax: (301) 846-1686
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