On Sep 2, 2008, at 6:25 AM, wxiewen wrote:
> I want to simulate a non-linear structure that I have to set a
> source whose amplitude is time-varying.
> The form I want to set is as folllowing
>
> |\ amplitude
> | /\
> | / \
> | / \
> | / \
> | / \
> | / \
> | __________________________\ time
>
> I use custom-src, but I have no idea about how to define a source
> with two section via one function .
Use an "if" statement if you want to define your function piecewise.
e.g.
(define (my-source t)
(if (< t 100)
... first function....
....otherwise, second function....))
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