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st: time variable year limit

From   Alan Williamson <>
Subject   st: time variable year limit
Date   Thu, 23 Aug 2007 12:06:21 +0000


I try to use year, yr, y, t, time, tim, etc. as the name of a time variable (tsset). But I always got 'repeated within the panel' or 'invalid time variable'.

Must the time variable have a restrict name or  year limit, such as minimum 2 or 3 years? Your help is appreciated.

Thank you.

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