> Subject: RE: [cosy-notecomputing] Re: http://cosy.com/cosylogo.htm
> Date: Mon, 27 Dec 1999 19:08:11 -0000
> From: "Saad Hafidh" <saad@...>

> Dear Bob
>
> Thank you for the trouble.
>
> You are right, you reminded me with a lecturer who wanted us to learn APL.
> Unfortunately it was not popular at the time and as you say it is really a
> powerful language.
>
> The algorithm on your gif paper is unreadable. I viewed it by another
> software which made it even worse. Do you happen to have it printed on
> paper?
>
> If I am not mistaken you have helped solved a major problem in pattern
> recognition. If interested I can tell you about it. We must have your
> algorithm up and running first. If you happen to have your work printed then
> I can retype it my self and send back to you to check and put in your site.

It`s been a long time since I printed out anything in an APL font .
I really think the simplest and most direct way to get an understanding of
the algorithm would be to subscribe to the CoSy-NoteComputing maillist ,
download CoSy and play with , and dissect the functions . It shouldn`t
take more than a half hour or so to download it and get it running . It
certainly would help me to know about any problems you ran into .

After your first note , I edited the function CoSyLogo which plots n-cubes
a bit and left it on F8 stack as an example . I could give you quick
feedback on any bumps you run into .

I think the crux of understanding the algoritm comes from seeing the
symetries of the connection matrices - and I can`t imagine a better way to
explore them than in the APL .


It`s nice to hear the result may be of wider interest . It struck me as a
problem which might retain its interest even beyond the age of the CalComp
pen plotter . I have a large plot of the 9-cube which took 15644 inches
of pen motion .



So you`re in London , eh . I stayed at a place near the Marble Arch after
APL96 in Lancaster ( see http://cosy.com/language/apl96.htm ) . If I`d
been around a few days longer , I think I would have tried to ease in to
one of the groups of guys hanging with strong coffee around hookahs with
cell phones to their ears along that street going north from the arch .

> Best Regards
>
> Saad

Sho-cran

--
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