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Re: st: Re: patterns of panel data


From   gcruces@worldbank.org
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: patterns of panel data
Date   Mon, 12 Aug 2002 08:30:29 -0400

Dear Kit and Dick,

Thank you for your comments. In fact, I was working on my own hacked
version of xtpattern, since I also preferred to transform the string 1.1 to
101 and then to binary. However, my dataset is of the form:
1111...............
.1111.............
..1111............
...1111.......... etc.
so the binary trick was not so useful (I may want to discard a
1..................
but keep a ..................1111, and the first number is still greater).
As Kit points out, the shift-bit part of it was not very good with stata.
I will try the hacked version of xtpattern - fortunately I am not missing a
whole
year at any point. But if this is the case, maybe a fillin would help? or may be
(not a very elegant solution), just creating one false observation for the
missing year
could help...
Thank you very much again

The "hack":
copy http://fmwww.bc.edu/ec-p/baum/xtpattern2.ado xtpattern2.ado
ssc install spell

***************************
Guillermo Cruces

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