Hi!
On Wed, Sep 15, 2010 at 10:15:20PM -0400, 月田翔 wrote:
> How should be done the output setting though it wants to know the
> time change of the electromagnetic field change by one point with
> the field as a numerical value when the electromagnetic field is
> analyzed with MEEP?
If I understand your question correctly, you want to plot E(\vec{r}, t) for a
fixed vector \vec{r} and all the times in your simulation.
One way to do it in the Scheme Meep is to define a function such as:
(define (my-output-trans)
(print "transmitted field:\t " (meep-time) "\t "
(get-field-point my-component meas-out-pt) "\n")
)
where my-component and meas-out-pt are the field component you are interested
in and the point in space (as a vector3) you want to "measure".
Then, when you run the simulation, you can run the simulation like:
(run-sources +
(runtime)
(at-beginning output-epsilon)
(after-sources my-output-trans)
)
If you send Meep's output to a file, a 'grep transmitted' and a bit of
manipulation will give you a file with a column for t and a column for E(t).
There might be more efficient ways of doing it, though. The experts are
welcome! :-)
Bye & Good Luck!
Pablo B.
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