```Date: May 29, 2013 3:48 AM
Author: David Park
Subject: Re: ListVectorPlot3D

Often the ListPlots are not the best approach. A more general and intuitivemethod is just to Map the graphics primitive (Point, Arrow, Line, whatever)onto the list of points defining it. In your example the plot gets toocluttered so I selected a random sample of 20 vectors from your test2 list.And I also reversed the direction of the Arrows because it looks nicer.Graphics3D[{Arrowheads[0.03],   Arrow /@ Reverse /@ RandomSample[test2, 20]}, Axes -> True]David Parkdjmpark@comcast.net http://home.comcast.net/~djmpark/index.html From: BBabic [mailto:bipsich101@gmail.com] Hello, I am using Mathematica 9.Not sure why, but it seems that Math can not plot non-equidistant set of 3Dvectors. Here is an example.We create two set of vector field data:Equidistanttest = Flatten[   Table[{{x, y, z}, RandomReal[{-10, 10}, 3]}, {x, -40000, 40000,      5000}, {y, -40000, 40000, 5000}, {z, -40000, 40000, 5000}], 2];randomtest2 = Flatten[   Table[{RandomReal[{-40000, 40000}, 3],      RandomReal[{-10, 10}, 3]}, {x, -40000, 40000, 5000}, {y, -40000,      40000, 5000}, {z, -10000, 10000, 2000}], 2];While ListVectorPlot3D[test]works. The ListVectorPlot3D[test2] just gives a Box without any error message.Any insight why this is not working and comments or ideas to make workablewould be highly appreciated.Cheers !
```