[Octave-bug-tracker] [bug #39552] quiver/quiver3 ignores scale with only one point to plot

[Nicholas Jankowski]

Update of bug #39552 (project octave):

                  Status:               Confirmed => Ready For Test         

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Follow-up Comment #2:

this behavior is still present in 8.2.0 using mike's comment #1 test case.
(single arrow size unchanged despite setting scaling factors of 1.0 and 0.5). 


Code base has changed since 2013 I believe moving the comment #0 suggestion to
line 152.  changing 


if (len > 0 && autoscale && numel (u) > 1)


to 


if (len > 0 && autoscale && numel (u) >= 1)


seems to fix the single quiver problem. 

I can't find any other problem cases that this would trigger (where num
vectors = 1 but it _needs_ to skip the autoscale code for some reason) and
quiver has no BISTs for checking that way.

Since I can't really test it well, and it's a really low priority issue that i
doubt has high demand for faster rollout, pushed this simple bugfix to default
as 
https://hg.savannah.gnu.org/hgweb/octave/rev/29671873411a

Marking as Ready for Test.


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