I came across the same issue with arc in sage 5.8
line([(0,1),(1,1)],linestyle=':')
works fine, however
arc((0,0),1,sector=(0,pi),linestyle=':')
raises the "unknown linestyle" error and linestyle='dotted' works for both.
Is there a deeper reason why these matplotlib linestyle shorts do not work
for all plot methods or wouldn't it be quite easy fix this and make this
more consistent?
Tobias
On Tuesday, August 4, 2009 3:49:17 AM UTC+2, Rado wrote:
>
> try using 'dashed' instead of '--'. Works for me.
>
> I have no idea why '--' works for plotting lines but not vectors
> (which are arrows) ...
>
> Rado
>
> On Aug 3, 3:46 pm, cesarnda <cesar...@gmail.com> wrote:
> > what is wrong with the following:
> >
> > sage: v1 = vector([1,2])
> > sage: v2 = vector([2,1])
> > sage: p1 = plot(v1, rgbcolor=(1,0,0))
> > sage: p2 = plot(v2, rgbcolor=(0,1,0))
> > sage: t1 = text("V1", (1,2.1), rgbcolor=(1,0,0))
> > sage: t2 = text("V2", (2,1.1), rgbcolor=(0,1,0))
> > sage: p3 = plot(v1 + v2, rgbcolor=(0,0,1))
> > sage: t3 = text("V1 + V2", v1+v2 + vector([0,0.1]), rgbcolor=(0,0,1))
> > sage: p4 = plot(vector([3,3]), rgbcolor=(1,1,1), linestyle='--')
> > sage: show(p1 + p2 + p3 + p4 + t1 + t2 + t3, xmin=-0.5, xmax=3.5,
> > ymin=-0.5, ymax=3.5)
> > Traceback (most recent call last):
> > File "<stdin>", line 1, in <module>
> > File "/Users/cesarnda/.sage/sage_notebook/worksheets/admin/9/code/
> > 120.py", line 7, in <module>
> > show(p1 + p2 + p3 + p4 + t1 + t2 + t3, xmin=-_sage_const_0p5 ,
> > xmax=_sage_const_3p5 , ymin=-_sage_const_0p5 , ymax=_sage_const_3p5 )
> > File "", line 1, in <module>
> >
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/sage/misc/functional.py", line 952, in show
> > return x.show(*args, **kwds)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/sage/plot/plot.py", line 1302, in show
> > hgridlinesstyle=hgridlinesstyle)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/sage/plot/plot.py", line 1627, in save
> > canvas.print_figure(filename, dpi=dpi)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/backend_bases.py", line 1453, in print_figure
> > **kwargs)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/backends/backend_agg.py", line 326, in print_png
> > FigureCanvasAgg.draw(self)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/backends/backend_agg.py", line 282, in draw
> > self.figure.draw(self.renderer)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/figure.py", line 773, in draw
> > for a in self.axes: a.draw(renderer)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/axes.py", line 1668, in draw
> > a.draw(renderer)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/patches.py", line 3588, in draw
> > gc.set_linestyle(self._linestyle)
> > File "/Users/cesarnda/Software/sage/local/lib/python2.6/site-
> > packages/matplotlib/backend_bases.py", line 650, in set_linestyle
> > raise ValueError('Unrecognized linestyle: %s' % style)
> > ValueError: Unrecognized linestyle: --
> >
> > Why does it say that the linestyle='--' is not recognized?
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