[R] read.csv converts "NA" to missing values

[peter dalgaard]

On Feb 27, 2012, at 14:15 , nikhil abhyankar wrote:

> Hello,
> 
> I have a CSV file with region codes listed in a column. E.g. 'AS' for Asia,
> 'AU' for Australia and 'NA' North America.
> 
> However, the data frame created using read.csv shows <NA> where the string
> variable should have had the value 'NA'.
> 
> How can I input the value 'NA' present in a column in a CSV file without R
> changing it to missing?


I'd try na.strings="" (or maybe NULL or character(0))

-pd

> 
> Thanks
> 
> Nikhil
> 
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> 
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Peter Dalgaard, Professor
Center for Statistics, Copenhagen Business School
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