Re: Manipulate / Space Phasor
- To: mathgroup at smc.vnet.net
- Subject: [mg92321] Re: Manipulate / Space Phasor
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Sat, 27 Sep 2008 22:20:15 -0400 (EDT)
- References: <gbl2ve$lvl$1@smc.vnet.net>
Hi,
DynamicModule[{gr, v, nf, tt}, Manipulate[
v = {Sin[u], Cos[u], u/10} /. u -> N[t];
nf = #/Sqrt[#.#] &[v];
tt = NullSpace[{nf}][[1]];
gr = ParametricPlot3D[{Sin[u], Cos[u], u/10}, {u, 0, t}];
Graphics3D[{gr[[1]], Line[{{0, 0, 0}, v}],
Polygon[{v, v - 0.1*nf + 0.05*tt, v - 0.1*nf - 0.05*tt}]}]
, {t, 1, 20}]
]
??
Regards
Jens
Fabian wrote:
> Dear Group-
>
> In this plot:
>
> Manipulate[
> ParametricPlot3D[{Sin[u], Cos[u], u/10}, {u, 0, t}], {t, 1, 20}]
>
> Is there a way a to show an Arrow from the origin to the tip of the
> curve at all instances of time t?
>
> Thank you.
>