Bug in fft.dem



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. You could try
computing the transform directly from its definition.

>  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.

>  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Unfortunately fft.dem seems to be many years out of date.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