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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#333399"> <small><font face="Helvetica, Arial, sans-serif">Bill,<br> <br> It is more that it is counterintuitive to me to be using ((x,y,z) -> t) rather than (t -> (x,y,z)). However, I guess the same thing appears on the plot. The reason for reversing the order seems to be to get the correct topology. So I now have a recipe, but I am not sure I understand what is happening. Is it written up somewhere what has and doesn't have a topology and what that topology is. I haven't come across it.<br> <br> It is also interesting about the manifold dimension = 1. It seems to me that the domain, which is the part that goes with the </font></small><small><font face="Helvetica, Arial, sans-serif">Gridded3DSet, has manifold dimension = 3, and that it is the range that has manifold dimension 1. (When using your order.) Or am I just confused.</font></small><br> <small><font face="Helvetica, Arial, sans-serif"><br> I did try to make a cursor consisting of two crossed lines recently. I noticed that I needed to use a Gridded2DSet, whereas a Linear2D set should have served. I believe the later gave points, not lines. I assume this is the same problem. (I ended up using a shape.)<br> <br> Thanks for the information,<br> <br> -Ken<br> <br> </font></small><br> Bill Hibbard wrote: <blockquote cite="mid20070327195212.528DC1BF900@xxxxxxxxxxxxxxxxxxxxxx" type="cite"> <div>Ken,<br> <br> This works because the lines between points must come from<br> a topology, and the Gridded3DSet defines a topology (a sequence<br> of lines in the case of manifold dimension = 1). Given a FlatField<br> with MathType (t -> (x, y, z)), the display logic should not assume<br> a topology among the (x, y, z) range points since there are plenty<br> of examples where there would not be any.<br> <br> By the way, it looks like your messages are making it to the list<br> now so no more need to CC Tom and me. I should have told<br> you that I use <a class="moz-txt-link-abbreviated" href="mailto:hiding@xxxxxxxxx";>hiding@xxxxxxxxx</a> for all mailing list traffic (I'm<br> hiding from spammers harvesting addresses). I suspect the list<br> server rejected your first message because the embedded image<br> exceeded the message length limit.<br> <br> Cheers,<br> Bill<br> <br> <blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;">----- Original Message -----<br> From: "Kenneth Evans" <evans@xxxxxxxxxxx><br> To: Visad <visad@xxxxxxxxxxxxxxxx><br> Subject: Re: Parametric Function with Lines Instead of Points<br> Date: Tue, 27 Mar 2007 14:27:04 -0500<br> <br> <font size="-1"><font face="Helvetica, Arial, sans-serif">Bill,<br> <br> Thanks. That was easy and worked. I need to think about why, though.<br> <br> 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.)<br> <br> Thanks again,<br> <br> -Ken<br> </font></font><br> Bill Hibbard wrote: </visad@xxxxxxxxxxxxxxxx></evans@xxxxxxxxxxx> <blockquote cite="midPine.SOC.4.64.0703271138180.22630@xxxxxxxxxxxxxxxxxxx" type="cite">Hi Ken, <br> <br> <blockquote type="cite">I want to plot a function (t -> (x, y, z)), for example, an orbit. I can do <br> this OK, but I get points on the plot and I would like lines. Can I do this <br> and if so, how? It doesn't seem like it should be hard, but I haven't <br> figured it out. <br> </blockquote> <br> You can do this by using your data to construct a <br> FlatField with MathType (((x, y, z) -> t) and whose <br> domain Set is a Gridded3DSet with manifold dimension <br> = 1. You should be able to find the Gridded3DSet <br> constructor for manifold dimension = 1. <br> <br> If you have any follow up questions please send them <br> to the VisAD mailing list, as you tried to do before, <br> and hopefully they'll get through. You can CC Tom and <br> me just to make sure. <br> <br> Good luck, <br> Bill <br> </blockquote> ============================================================================== To unsubscribe visad, visit: <a class="moz-txt-link-freetext" href="http://www.unidata.ucar.edu/mailing-list-delete-form.html";>http://www.unidata.ucar.edu/mailing-list-delete-form.html</a> ============================================================================== </blockquote> </div> <br> -- <p><a href="http://a8-asy.a8ww.net/a8-ads/adftrclick?redirectid=en-mail_a_01"; target="_blank"> <img moz-do-not-send="true" alt="" src="http://a8-asy.a8ww.net/a8-ads/adftrview?redirectid=en-mail_i_01"; border="0"></a></p> </blockquote> </body> </html> ============================================================================== To unsubscribe visad, visit: http://www.unidata.ucar.edu/mailing-list-delete-form.html ==============================================================================
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