On 7/14/12 5:13 PM, ObsessiveMathsFreak wrote:
The current support for arrows in sage plots currently isn't very
satisfactory. Arrows have odd behaviour, and "fat" heads with no obvious
styling options. The following code
arrow2d((0, 0), (2, 3), color="red")+point((2,3))
Generates an arrow, but the head does not reach the required point, and
the tail does not touch the origin. I can find no documentation or
methods for drawing an arrow which does so.
A related point is the lack of arrow in plot axes. It would be nice to
have a simple "Arrows=true" but again this does not seem to be available.
That's right; it's not available as an option. It would be great to add
it! You'd need to look into how to do with matplotlib and add the
necessary code, I think in SAGE_ROOT/devel/sage/sage/plot/graphics.py.
Are there workarounds for these issues, arrows not touching endpoints
and arrows on axes? I've tried looking into calling matplotlib directly,
but again, I haven't been able to find much in the way of arrow
documentation.
http://trac.sagemath.org/sage_trac/ticket/12836 should have fixed the
too-short arrows in 5.1.
Jason
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