On May 22, 2008, at 8:07 AM, Franco Saliola wrote:
>
> On Thu, May 22, 2008 at 10:50 AM, Robert Miller
> <[EMAIL PROTECTED]> wrote:
>
>> sage: G = graphs.PetersenGraph()
>> sage: sage.graphs.graph_fast.spring_layout_fast(G, iterations=50,
>> dim=2)
>
> Perhaps this should be exposed as G.spring
On Thu, May 22, 2008 at 10:50 AM, Robert Miller <[EMAIL PROTECTED]> wrote:
> sage: G = graphs.PetersenGraph()
> sage: sage.graphs.graph_fast.spring_layout_fast(G, iterations=50,
> dim=2)
Perhaps this should be exposed as G.spring_layout() (or some other
name). It seems like it might be useful. C
Robert Miller <[EMAIL PROTECTED]> writes:
> sage: G = graphs.PetersenGraph()
> sage: sage.graphs.graph_fast.spring_layout_fast(G, iterations=50,
> dim=2)
[...]
> sage: sage.graphs.graph_fast.spring_layout_fast(G, iterations=50,
> dim=3)
>
That's exactly what I was looking for. This is great!
sage: G = graphs.PetersenGraph()
sage: sage.graphs.graph_fast.spring_layout_fast(G, iterations=50,
dim=2)
{0: [0.93950023361313362, -0.088093655912920787],
1: [-0.032723044718243596, 0.0032620178712528453],
2: [-0.78167205667257567, 0.25668081056701608],
3: [-0.19695488333682584, 0.98041255292
On Thu, May 22, 2008 at 7:43 AM, Robert Miller <[EMAIL PROTECTED]> wrote:
>
> Nikos,
>
>> This seems to work only with graphs already known to Sage but not with
>> new graphs constructed by the user. For example:
>
> If you construct a new graph, the position dictionary is not set. You
> can do s
Nikos,
> This seems to work only with graphs already known to Sage but not with
> new graphs constructed by the user. For example:
If you construct a new graph, the position dictionary is not set. You
can do so with the set_pos() command, and if there is no position dict
set when you plot, it u
Jason Grout <[EMAIL PROTECTED]> writes:
> Nikos Apostolakis wrote:
>> Hello,
>>
>> is there a way to get the the coordinates of the points where the
>> vertices of a graph would be placed if drawn via plot2d or plot3d?
>
>
> If the layout is already computed, the coordinates can be retrieved wit
Nikos Apostolakis wrote:
> Hello,
>
> is there a way to get the the coordinates of the points where the
> vertices of a graph would be placed if drawn via plot2d or plot3d?
If the layout is already computed, the coordinates can be retrieved with
get_pos() (and changed with set_pos())
sage: g=
