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Re: st: a question about loop and local marco name


From   Richard Williams <[email protected]>
To   [email protected]
Subject   Re: st: a question about loop and local marco name
Date   Thu, 26 Jan 2006 15:58:13 -0500

At 03:42 PM 1/26/2006, Richard Williams wrote:
At 03:20 PM 1/26/2006, Jian Zhang wrote:
It turns out that this time it works with AND without an equal sign in
the local marco command.  I am really confused.  Is there any explanation
why STATA does this?  Is there a general rule for using equal sign or not
in the local marco command?

Thank you very much!

Jian Zhang
What Stata are you using? As pointed out on p. 202 of the Stata 9 users Guide, if you use the = sign, strings are limited to 244 characters in Stata/SE and 80 characters in Intercooled and Small Stata. Your string is more than 80 characters. If you skip the equals sign, you can go several thousand characters (how much depends on what Stata you have.) So, it is better to not use the equals sign.
Correction: If I am reading the help right, as of Stata 9.1 all three versions of Stata now allow string expressions of 244 characters. So, I am guessing that you are either using Stata 8 or else do not have the most up to date version of Stata 9. In any event, you are still better off avoiding the equal sign in this case.


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Richard Williams, Notre Dame Dept of Sociology
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