As a newbie to the list and Logo for some number of years, I'll have to

admit that I'd not used the environment in a while. I had primarily stuck

with Mathematica (v 3.0) as a favourite programming language while in

university (completed a B. Sc. math major recently).

Are there any .nb or .m files out there that emulate the simple Logo

turtle programming environment in such a way that the output is equivalent

to a simple Plot or Animate commands of the sine curve, etc? Is there a

standard file format to save a copy/paste of LOGO output (say, of a

graphical rendering in LOGO) and/or any way to convert back and forth

from one graphical rendering type to the other? [I realize that Logo is an

interpreter as opposed to a compiler type language where much of the

output is returned as the program is being written to screen. I'd not had

much of a chance to experiment with Logo-style languages in a while.]

As an example of a problem I'd be trying to work on in Mathematica, but

that I could easily see to be easier to write in Logo is:

draw the boundary set of a union of aperiodically tiled tiles (say, for

instance, a tile set such as k amount of kites and d darts - along with

their boundary rules, length and angular measure rules within the tiles,

etc) choose any one of the total(n) 'cut-outs' where n:=k+d, and create a

table of rules to construct all the cut-outs of a size n. (A cut-out

might be considered as a plane sub-tiling which leaves no holes, but we

could later extend the notion. I would also want to keep the notion of

directed edges, particularily for what's going on at the border-line of

the cutout. Later on, I'd be interested in trying to print the image out

on paper and try to create cylinder/torus-like foldups or wrap-ups of the

paper according tothe aperiodic tiling rules.) An interesting side notion

would be to count the number of different (or non-isomorphic) total(n) for

some n (or total(k,d) for some fixed k, given 1st d) and see if there is

a relation between them and group-like properties of similar periodic

tilings such as the rotation group of the hexagonal tiling.

Some of the computation would be easy to draw in Logo (as we can tell Logo

quite easily how long to draw lines and which direction to go and when to

draw a line) and some would also be easier to analyse in mathematica (I

can take advantage of my mathematica programming style of tabulation of

variables for variabled k,d,n,total(n) [- here meaning the number of

total non-isorphic cut-outs for a given n or k and d], as well as

hopefully being able to find a nice recursive way for building more

detailed cut-outs with more tiles on the cut-out).

Apologies that I might have gotten the wrong group, but I thought I'd

compare the 2 programming languages for what I could use each for and

where one may be lacking.

-- Kai G. Gauer --

Thursday Edwin Pilobello says:

EP)Date: Thu, 18 Jul 2002 08:42:32 -0700

EP)Subject: [LogoForum] Graphing Calculators

EP)

EP)that in addition to graphing calculators, that a Mathimatica-type

EP)compliment in Logo would be awesome.

EP):-) edwin

--

To unsubscribe from this group, send an email to:

LogoForum messages are archived at:

http://groups.yahoo.com/group/LogoForum

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/