pong wrote:
> I am using SAGE 4.1.2 notebook on firefox on a Mac.
>
> k=graphs.CompleteGraph(6)
> show(k)
>
> displays K_6 but the vertices got truncated. I don't have this problem
> on a linux machine running SAGE 4.1.1 notebook on firefox.
>
> Any help?
> I would like to include the pic but I don't see how on using this
> discussion group.
I think this is because the graph plotting code sets the min/max x/y
positions to the coordinates of the vertices, without allowing for the
radii of the circles representing the vertices. If the graph_border
option is given, then a border is added to the picture and the
xmin/xmax, ymin/ymax parameters are expanded.
To fix this, try replacing the line:
G.set_axes_range(self.xmin, self.xmax, self.ymin, self.ymax)
(line 767 in graphs/graph_plot.py)
with the following two lines:
v_radius = sqrt(self._options['vertex_size']/pi)*1.5 #
vertex_size is the area of the vertex circle, then pad a bit
G.set_axes_range(self.xmin-v_radius, self.xmax+v_radius,
self.ymin-v_radius, self.ymax+v_radius)
to allow space for the radii of the vertices. I can't test this right
now because of problems with my Sage installation.
Thanks,
Jason
--
Jason Grout
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