Parametric Function with Lines Instead of Points

[Bill Hibbard]

 Ken,

This works because the lines between points must come from
a topology, and the Gridded3DSet defines a topology (a sequence
of lines in the case of manifold dimension = 1). Given a FlatField
with MathType (t -> (x, y, z)), the display logic should not assume
a topology among the (x, y, z) range points since there are plenty
of examples where there would not be any.

By the way, it looks like your messages are making it to the list
now so no more need to CC Tom and me. I should have told
you that I use hiding at japan.com for all mailing list traffic (I'm
hiding from spammers harvesting addresses). I suspect the list
server rejected your first message because the embedded image
exceeded the message length limit.

Cheers,
Bill

  ----- Original Message -----
  From: "Kenneth Evans"
  To: Visad
  Subject: Re: Parametric Function with Lines Instead of Points
  Date: Tue, 27 Mar 2007 14:27:04 -0500

  Bill,

  Thanks.  That was easy and worked.  I need to think about why,
  though.

  In regard to the email's not getting through:  Is it possibly because
  I had a screen dump in the body, rather than as an attachment.  (I do
  that all the time and didn't think.)

  Thanks again,

  -Ken

  Bill Hibbard wrote:

    Hi Ken,

      I want to plot a function (t -> (x, y, z)), for example, an
      orbit.  I can do
      this OK, but I get points on the plot and I would like
      lines.  Can I do this
      and if so, how?  It doesn't seem like it should be hard, but
      I haven't
      figured it out.


    You can do this by using your data to construct a
    FlatField with MathType (((x, y, z) -> t) and whose
    domain Set is a Gridded3DSet with manifold dimension
     = 1. You should be able to find the Gridded3DSet
    constructor for manifold dimension = 1.

    If you have any follow up questions please send them
    to the VisAD mailing list, as you tried to do before,
    and hopefully they'll get through. You can CC Tom and
    me just to make sure.

    Good luck,
    Bill

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