st: Problem with -denton- solved

[Christopher Baum <kit.baum@bc.edu>]

<>
An exchange on Statalist reported a problem with -denton- from SSC. It turns out that this problem arose because of the difference between

tsset year

and

tsset year, yearly

In the former case, the frequency is not defined, and r(unit1) = ".", whereas in the latter case, r(unit1) = "y". I will add a check to -denton- to trap this case -- where the data are showing as -tsset-, but not at a known frequency -- but users should note that this might bite elsewhere.  To use -denton- on annual data, the data must be defined as such.

Kit

Kit Baum   |   Boston College Economics & DIW Berlin   |   http://ideas.repec.org/e/pba1.html
                             An Introduction to Stata Programming  |   http://www.stata-press.com/books/isp.html
  An Introduction to Modern Econometrics Using Stata  |   http://www.stata-press.com/books/imeus.html
                                                                                                   | http://www.crup.com.cn/Item/111779.aspx	


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