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[Convert column classes in data\.table](http://stackoverflow.com/questions/7813578/convert-column-classes-in-data-table) I have a problem using data.table: How do I convert column classes? Here is a simple example: With data.frame I don't have a problem converting it, with data.table I just don't know how: df <- ... Tagged: r data.table by [Christoph_J](http://stackoverflow.com/users/834939/christoph-j) on [stackoverflow.com](http://stackoverflow.com) **[Unsubscribe from this filter](http://stackexchange.com/email/unsubscribe-filter/54059/1835492921?code=Ww%2br5P%2bkZh62Su%2bb8BxARk0SaTzlIy35oXIq95YZ5PI%3d) or change your email preferences by visiting your [filter subscriptions page on stackexchange.com](http://stackexchange.com/users/982621?tab=subscriptions).** _________________________________________________________________________ Questions? Comments? Let us know on our [feedback site][9]. If you no longer want to receive mail from Stack Exchange, [unsubscribe from all stackexchange.com emails][7]. Stack Exchange, Inc. One Exchange Plaza, 26th Floor, NY NY 10006 <3 [7]: http://stackexchange.com/email/manage/87663/e8677ed809eb95d9521d37a09a6bb4e95cfb1bc107ebba647fc80f3a0056f9c9 [8]: http://stackexchange.com [9]: http://meta.stackoverflow.com
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