--- D H <[email protected]> wrote:
> Stata contains a trap for novice programmers and users of certain
> commands such as nl. If a local or global macro contains a value
> that is less than zero, care should be taken when using the
> exponentiation operator.
>
> Example:
> . global A = -5
>
> . display $A^2
> -25
This is documented here:
http://www.stata.com/support/faqs/lang/macpow.html
-- Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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