Re: can't get ListVectorPlot3D to work.
- To: mathgroup at smc.vnet.net
- Subject: [mg107540] Re: [mg107506] can't get ListVectorPlot3D to work.
- From: "1.156" <rob at piovere.com>
- Date: Tue, 16 Feb 2010 03:53:53 -0500 (EST)
- References: <15703940.1266231913393.JavaMail.root@n11> <002f01caae42$31d97590$958c60b0$@net>
Thank you Mr. Park. Your routine gives me what I need and now I know
that something may be broken in ListVectorPlot3D.
Regards, Rob
David Park wrote:
> Rob,
>
> It looks to me that the Help for ListVectorPlot3D is deceptive at best in
> the second usage. It appears that there must be a regular array and those
> are the only examples that are shown.
>
> However, you could do the following:
>
> drawVector[{point_, vector_}] := Arrow[{point, point + vector}]
> Graphics3D[
> {Blue,
> drawVector /@ pts},
> Axes -> True,
> ImageSize -> 350]
>
>
> David Park
> djmpark at comcast.net
> http://home.comcast.net/~djmpark/
>
>
>
> From: 1.156 [mailto:rob at piovere.com]
>
> *********
> HELP states: ListVectorPlot3D[{{ {x1,y1,z1},{vx1,vy1,vz1}}, ...}]
> generates 3D vector plot from vector field values {vxi,vyi,vzi} given at
> specified points {xi,yi,zi}.
>
> But, I get nothing but an empty box when trying this:
>
> pts={ {{3., 0, 0}, {-2.15667, 3.39688, 4.02369}},
> {{0.843326, 3.39688, 4.02369}, {-4.19657, -2.394, 4.8314}},
> {{-3.35324, 1.00288, 8.85509}, {2.19306, -4.30499, 4.8314}},
> {{-1.16019, -3.30212, 13.6865}, {4.4038, 1.98721, 4.8314}},
> {{3.24361, -1.31491, 18.5179}, {-1.77692, 4.49277, 4.8314}} }
>
> ListVectorPlot3D[pts]
>
> I've spent hours trying various options and have never seen a plot yet.
> (VectorPoints->All seemed most promising but got nowhere.)
> Surely I'm misinterpreting something --can someone please enlighten me
> as to what? Using V7 on XP.
>
> Thanks, Rob
>
>
>
>
>
--
Sent from my plain desktop PC.