Home Dyno/ 2d v 3d/ new list?

[gt bradley]

Steve N wrote:

> > There's a software package called Home Dyno for $40 bucks that does
> > this.
>

<snip>

> Next I have some questions on 2d vs 3d.  Now from what I understand 2d
> is a system where two values are entered and one numebr pops out for the
> computer to make use of.  If this is true, this is a 2d system right:
>
> ftp://ftp.mr2.com/pub/geoff/mr2/sw20inj3.gif
>
> Or is it a 3d system, and they just do not show the 3rd axis, and just
> show the maximum vaules for the z?  I guess it could be both, it just
> depends on if the vaue for the z axis is variable.
>

This is a 3D graph,  two axis are shown, and the third is represented with
color,  Kind of like a topogragical map where you have longitude, latatude,
and elevation on a 2d piece of paper.  The plot is rotated, and no key is
given for the Z-axis,

Now maybe the 2 inputs to the system make it a 2D system, but the graph is a
3D graph.
GT