Message-ID: <1295406488609-3224478.post@n4.nabble.com>
Date: 2011-01-19T03:08:08Z
From: eric
Subject: Log difference in a dataframe column
In-Reply-To: <4D34974B.8090906@ucalgary.ca>
Just learning so excuse me if I'm being too basic here. But I'm wondering how
should I know that as.ts would be needed for lag ? Is there a thought
process or way to inspect that I should have gone through to know that log
would work on y[,5] but lag would not work on [,5] ?
Is the general rule that lag is not in the base package and therefore would
not work ?
Thanks for the comments
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