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Drawing a vector list

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  Drawing a vector list Hauke Reddmann <fc3a501@uni-hamburg.de> - 2011-04-27 09:39 +0000
    Re: Drawing a vector list Yves Klett <yves.klett@googlemail.com> - 2011-04-27 11:24 +0000
    Re: Drawing a vector list Peter Breitfeld <phbrf@t-online.de> - 2011-04-27 11:25 +0000

#1904 — Drawing a vector list

A n00b question - I have a 3D vector list L={{A1,A2},{B1,B2},{C1,C2}...
where for example A1={1,2,3},A2={4,5,6} and so on. I want to draw
the vectors A1->A2 etc. LINE has no arrowhead option, ARROW only eats 2D vectors
and VECTORPLOT3D has yet another unfitting syntax. I could do a hackjob and
first draw LINE[L] and then make a loop adding little arrowheads at all #2 
(and I would have to compute their directions too!), 
but what is the most elegant way to program this without any DO loops?

-- 
Hauke Reddmann <:-EX8    fc3a501@uni-hamburg.de
Leierklang und ein flammendes Inferno grüßen dich
auf das Allerzärtlichste

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#1913

Hi,

versions 7 and 8 nicely support 3D specs for Arrow[]. Look at the help.

Regards,
Yves



Am 27.04.2011 11:39, schrieb Hauke Reddmann:
> LOT3D has yet another unfitting syntax. I could do a hackjob and
> first draw LINE[L] and then make a loop adding little arrowheads at all #2 
> (and I would have to compute their directions too!), 
> but what is the most elegant way to program this without any DO lo

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#1917

Hauke Reddmann wrote:

> A n00b question - I have a 3D vector list L={{A1,A2},{B1,B2},{C1,C2}...
> where for example A1={1,2,3},A2={4,5,6} and so on. I want to draw
> the vectors A1->A2 etc. LINE has no arrowhead option, ARROW only eats 2D vectors
> and VECTORPLOT3D has yet another unfitting syntax. I could do a hackjob and
> first draw LINE[L] and then make a loop adding little arrowheads at all #2 
> (and I would have to compute their directions too!), 
> but what is the most elegant way to program this without any DO loops?
>
> -- 
> Hauke Reddmann <:-EX8    fc3a501@uni-hamburg.de
> Leierklang und ein flammendes Inferno grüßen dich
> auf das Allerzärtlichste
>

Maybe you want:

A1 = {0, 0, 0}; A2 = {1, 1, 1};
B1 = {3, -1, 3}; B2 = {2, 2, 2};
C1 = {4, 5, -2}; C2 = {5, 6, 7};
ll = {{A1, A2}, {B1, B2}, {C1, C2}}

Graphics3D[{Arrow/@ll}]
-- 
_________________________________________________________________
Peter Breitfeld, Bad Saulgau, Germany -- http://www.pBreitfeld.de

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