[R] read.table behavior for Dates.

David Winsemius dwinsemius at comcast.net
Fri Apr 16 22:22:21 CEST 2010

On Apr 16, 2010, at 3:57 PM, Jeroen Ooms wrote:

> Yes I know I can manually do it, but I am using it for scripts in  
> which users
> upload files. Hence, I don't know what's going to come; I don't know  
> on
> before hand whether data will contain Dates, and in which columns they
> appear. This is why I was surprised that read.table has some  
> (undocumented)
> behavior of converting columns that look like Dates to a different  
> format.
> I would like to control this default behavior of the read.table  
> function,
> rather than set a type for a specific column of a specific file.

The as.is argument should prevent automatic conversions. Set it to TRUE.

David Winsemius, MD
West Hartford, CT

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