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[Octave-bug-tracker] [bug #32836] quiver3 draws nothing, although it sho

From: Rik
Subject: [Octave-bug-tracker] [bug #32836] quiver3 draws nothing, although it should
Date: Fri, 18 Mar 2011 19:14:10 +0000
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110303 Ubuntu/10.04 (lucid) Firefox/3.6.15

Update of bug #32836 (project octave):

                  Status:                    None => Need Info              


Follow-up Comment #1:

Isn't the vector field supposed to be single-valued?  I think the problem is
that you have specified two values for the vector to draw at the exact same
point (0,0,0).  If you actually have two points then quiver3 seems to work.

quiver3 ([0 0],[0 0],[0 1],[1 -1],[1 -1],[1 -1])

or to get what you were intending
quiver3 ([0 0],[0 0],[0 1],[1 -1],[1 -1],[1 -1])
quiver3 (0,0,0,1,1,1);
hold on
quiver3 (0,0,0,-1,-1,-1);

How does Matlab handle this?  Does it accept multiple values for the same


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