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

[Nicholas Jankowski]

Follow-up Comment #7, bug #39552 (project octave):

ok, plan to add the following BIST:


%!test <*39552>
%! [x,y] = meshgrid (1:2:20);
%! u = sin (2*pi*x/10);
%! v = sin (2*pi*y/10);
%! ## Single arrow, check arrow length and scale factor adjustment
%! h = quiver (x(4,4), y(4,4), u(4,4), v(4,4), 1);
%! axis ([0, 20, 0, 20]);
%! xendpoint1 = get (get (h, "children")(3), "xdata")(2);
%! assert (xendpoint1, x(4,4) + u(4,4), eps);
%! h = quiver (x(4,4), y(4,4), u(4,4), v(4,4), 0.5);
%! axis ([0, 20, 0, 20]);
%! xendpoint2 = get (get (h, "children")(3), "xdata")(2);
%! assert (xendpoint2, x(4,4) + 0.5*u(4,4), eps);

this passes, but i have to remember how we decided to best silence plots in
BISTs. 




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