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.