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

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