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

[Nicholas Jankowski]

Follow-up Comment #10, bug #39552 (project octave):

saw that.  you're replacing the figure handle with an axes handle i think.

the following test seems to work, based on axes.m:

%!test <*39552> # Check arrow length and scale factor adjustment.
%! hf = figure ("visible", "on");
 unwind_protect
%!   [x,y] = meshgrid (1:2:20);
%!   u = sin (2*pi*x/10);
%!   v = sin (2*pi*y/10);
%!   hax = quiver (x(4,4), y(4,4), u(4,4), v(4,4), 1);
%!   xendpoint = get (get (hax, "children")(3), "xdata")(2);
%!   assert (xendpoint, x(4,4) + u(4,4), eps);
%!   hax = quiver (x(4,4), y(4,4), u(4,4), v(4,4), 0.5);
%!   xendpoint = get (get (hax, "children")(3), "xdata")(2);
%!   assert (xendpoint, x(4,4) + 0.5*u(4,4), eps);
%! unwind_protect_cleanup
%!   close (hf);
%! end_unwind_protect


making a simpler test to check multiple arrow scaling too. 


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