Robert Dodier wrote:
> On 7/5/08, Richard Owlett <rowlett at atlascomm.net> wrote:
>
>
>> Originally I started looking to see if Maxima could give me an Fourier
>> Transform of an analytic function over a range of 0 to t.
>
>
> Maxima has some functions for Fourier series, and the discrete
> Fourier transform, but, to the best of my knowledge, not the
> continous Fourier transform. Sorry about that.
I suspected as much. I mentioned only to try to show where I was coming
from.
> You could try
> computing the transform directly from its definition.
Others might but I haven't seen a math text in over 30 years ;}
I'm basically trying to use Maxima to what I've forgotten or never
mastered in the first place.
>
>
>> The "Help system"
>> (I use the term "help" loosely but that's a different problem)
>
>
> If you have some specific observations, it is much more helpful.
That needs its own thread and I have to spend more time with it to
establish which problems are "it" and which are "me".
I'd also like to be able to make some suggestions on how problems might
be solved.
>
>
>> demo("fft")
>
>
>> (%i24) thru 10 do pl()
>> Maxima encountered a Lisp error:
>> Error in LISPM-REARRAY [or a callee]:
>
>
> Unfortunately fft.dem seems to be many years out of date.
> I've fixed the specific problem you mention here, but there are
> other problems --- not least of which, Maxima no longer has a
> function named graph2. Maybe someone can revise fft.dem
> and bring it up to date.
>
> HTH
>
> Robert Dodier
>
Thanks. I'll just do FFT's with Scilab, with which I'm familiar.
I was looking at the demo to see if there was anything apparent that
might be more useful than Scilab.