---------- Forwarded message ----------
From: Kazuo Thow <[email protected]>
Date: Fri, Nov 20, 2009 at 2:17 PM
Subject: Re: [sage-support] Problems with Graphs
To: William Stein <[email protected]>
Cc: Kevin Clark <[email protected]>
Michel,
There's an option in the plot() function, edge_labels, which is set to
False by default. If you use
> G=DiGraph({0:{2:'3*x^2'}, 1:{0:'3/x'}, 2:{1:'6*x^2'}})
> G.plot(edge_labels=True)
then your graph should display properly with all its edge labels. You
can also change the colors of the edges to make the labels stand out
better against their background:
> G.plot(edge_labels=True, edge_colors='#dddddd')
And of course, '#dddddd' can be replaced by any hexadecimal code you
want. You can see more options like these by typing G.plot?.
As for the vertex labels being cut off, setting graph_border=True will
give enough padding around the border of the image. Kevin Clark
recently implemented a better fix for this issue, but I don't know if
it's included in most recent release. (It's definitely not included
in the online version at sagenb.org.)
Hope that helps,
Kazuo
On Fri, Nov 20, 2009 at 12:51 PM, William Stein <[email protected]> wrote:
>
> One of you guys could answer this poor user's support request...
>
>
> ---------- Forwarded message ----------
> From: Michel <[email protected]>
> Date: Fri, Nov 20, 2009 at 12:48 PM
> Subject: [sage-support] Problems with Graphs
> To: sage-support <[email protected]>
>
>
> I am trying to use the Graph functionality in sage but it does not
> quite work.
>
> I do
>
> G=DiGraph({0: {2: '3*x^2'}, 1: {0: '3/x'}, 2: {1: '6*x^2'}})
> G.show()
>
> A pgn viewer pops up showing the graph indeed. However:
>
> (a) The vertex labels are cropped.
> (b) No edge labels are shown.
>
> Am I doing something wrong?
>
> This Sage 4.2.1. Freshly compiled from source on Ubuntu 9.04.
>
> --
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>
>
> --
> William Stein
> Associate Professor of Mathematics
> University of Washington
> http://wstein.org
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
--
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