Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
<!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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