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Hello Lionel,
why not start a new thread. That's interesting stuff! What I can bring to
the party is a recommendation of Mathematica 4.1 (www.wolfram.com) which is
the only symbolic math package which is also fully programmable. Its
powerful programming language is infinitely versatile, enabling one to
choose between, or mix, procedural, functional, object-oriented,
rule-based, and other styles. And of course it can do all that Derive,
Maple, MathLab etc. can do, all the graphics programming, and much more.
You can get a first impression of Mathematica at
http://library.wolfram.com/explorations/web/.
No connections etc. etc.
Best,
Michael Suesserott
-----Ursprüngliche Nachricht-----
Von: owner-metastock@xxxxxxxxxxxxx
[mailto:owner-metastock@xxxxxxxxxxxxx]Im Auftrag von Lionel Issen
Gesendet: Friday, March 16, 2001 20:23
An: metastock@xxxxxxxxxxxxx
Betreff: Re: math and 3D plots
Walter:
I may have misunderstood your posting.
Arithmetic is math, so is geometry, algebra in all its varieties, chaos
theory, statistics and ad infinitum.
Metastock uses algebra, the simple kind that's taught in grade and high
school, its mostly symbolic arithmetic.
Excel is much more than arithmetic, it's just that we use the simple
capabilities the most.
Two variables require only a 2 D space to plot, not 3 D. You can plot 2
variables in a 3 D space, but all the results will lie on a plane.
I agree with you, simpler is better, just as long as it isn't simple-minded.
Thanks again for telling me about Derive.
Aside from this, since you like simplicity in analysis: the Eiffel Tower was
designed/analyzed using graphical methods, no arithmetic or algebraic
analysis were used; the arch in St. Louis was designed/analyzed using slide
rules. Both these structures are fairly complicated.
I don't want to start a new thread. Please e-mail me direct.
Lionel Issen
lissen@xxxxxxxxx
----- Original Message -----
From: "W Lake" <wlake@xxxxxxxxx>
To: <metastock@xxxxxxxxxxxxx>
Sent: Friday, March 16, 2001 8:27 AM
Subject: math and 3D plots
> Thanks for your emails
>
> What you are talking about is the confusion between Math and Arithmetic.
>
> Most of the stuff in Metastock and Excel is Arithmetic, i.e., the
> calculations and algorithms. The hard stuff is usually the "Math".
>
> Personally, I stick with the easier Arithmetic and only get dragged into
> Math kicking and screaming. There are some very good Math people on the
list
> who love the stuff and could easily explain the difference between
> Arithmetic and Math as it relates to Metastock and Excel.
>
> You need a 3D plot to handle equations that have two variables. The points
> of the array are plotted in 3d space and joined by straight line segments.
> That's why you get the wired grid look with the cute bright colours.
>
> I like Derive because it's got all those easy to use buttons right on the
> algebra window so now I can quickly punch in all of Simons' expressions
and
> get those neat looking plots.
>
> Best regards
>
> Walter
>
>
>
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