On Nov 2, 2010, at 11:43 AM, Silviu Popescu wrote:
Dear meep users,
I don't understand the following behaviour.
When I define geometry lattice like this:
(define-param Sx 8)
(define-param Sz 8 )
(set! geometry-lattice (make lattice (size Sx no-size Sz)))
(set-param! resolution 10)
....\
This is because Sx and Sz are predefined constants in Meep referring
to components of the Poynting vector (which happen to have values 100
and 104).
The define-param command does nothing if the variable is already
defined (in order to handle the case where the variable was defined on
the command line), and so it uses the predefined values in this case.
--SGJ
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