Wed 16 Nov 2016 10:00:13 PM UTC, comment #1:
Confirmed here, still present with the development version of Octave (4.3.0+) on Debian.
Here is a simple example showing that the arrow scaling factor does not work, and in fact the scale of a single arrow is blown out of proportion compared to how it is computed with a full field of arrows.
Derived from the demo of quiver:
|
Mon 22 Jul 2013 07:34:49 PM UTC, original submission:
The functions quiver and quiver3 take an optional scaling value "to use for the arrows of the field relative to the mesh spacing." However, if only one point is passed to quiver (or quiver3), this scaling factor is ignored. The bug is in /usr/local/share/octave/3.6.4/m/plot/private/__quiver__.m on line 108, where changing > to >= fixes the problem.
I am testing on OS X (octave installed with brew) and gnuplot plotting, but I think those are irrelevant for this bug.
|