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Here's a very cheap excellant 3D math tool. I believe it's about $10. See
examples at http://www.mi.sanu.ac.yu/vismath/parker/gr1.htm.
HiTech Analytics, LLC
Brian K. Lee
www.hitech-analytics.com
----- Original Message -----
From: "W Lake" <wlake@xxxxxxxxx>
To: <metastock@xxxxxxxxxxxxx>
Sent: Friday, March 16, 2001 4:43 PM
Subject: Re: math and 3D plots
> Hi Lionel
>
> I told you that you that I was bad at Math. <G>
>
> Would love to have a copy of Mathematica ... but ... as always ... it's
the
> PRICE .
>
> There's been a few postings on the Excel-L list re the following formula
and
> how to plot it in Excel.
>
> Plot 3D - Surface z = f(x, y)
>
> Of course the Math guys could come up with lots of examples that apply to
> Metastock and trading. So maybe we should start there. What's it mean,
> what's an algebraic expression meant to convey, etc.
>
> You and I can use Derive and Michael can use Mathematica. Since the
markets
> are headed downward for the next few (fill in your favourite time frame)
> anyway ... we should probably occupy our time with uplifting things <G>
>
> Best regards
>
> Walter
>
> ----- Original Message -----
> From: Lionel Issen <lissen@xxxxxxxxx>
> To: <metastock@xxxxxxxxxxxxx>
> Sent: Friday, March 16, 2001 2:23 PM
> Subject: 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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