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Re: st: how to express Pi in stata


From   Richard Williams <[email protected]>
To   [email protected]
Subject   Re: st: how to express Pi in stata
Date   Sun, 10 Dec 2006 10:42:35 -0500

At 09:45 AM 12/10/2006, Philipp Rehm wrote:
di c(pi)
Also

di _pi

It may also be helpful to check out

help _variables

From the first part of the help:

Expressions may also contain _variables (pronounced "underscore variables"). These are built in system variables that are created and updated by Stata. They are called _variables because their names all begin with the underscore '_' character.


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