read.csv converts "NA" to missing values

An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20120227/d437d603/attachment.pl>
I believe read.csv(..., na.strings = "") will do it.

Michael
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?

Thanks

Nikhil

? ? ? ?[[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

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

	[[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Peter Dalgaard, Professor
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com