#14177: More uniform handling of color_by_labels for graph plot, plot3d,
graphviz
-------------------------------------+--------------------------------------
Reporter: nthiery | Owner: jason, ncohen, rlm
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.8
Component: graph theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: Nathann Cohen?
Authors: Nicolas M. Thiéry | Merged in:
Dependencies: | Stopgaps:
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Comment (by nthiery):
Replying to [comment:3 ncohen]:
> HMmmmm.... Really ? `:-P`
> {{{
> ``color_by_label`` - a boolean (default: False)
> ...
> sage: p = G.plot(edge_labels=True, color_by_label={'a':'yellow',
'b':'purple'}); p
> }}}
Yes, really! Just take a slightly larger extract :-)
{{{
- ``color_by_label`` - a boolean (default: False)
whether to color each edge with a different color according
to its label; this can also take as value a function or
dictionary mapping labels to colors; this option is
incompatible with ``edge_color`` and ``edge_colors``.
}}}
I agree it's not perfect, as you may at first glance miss the information
that the value can be something else than a boolean. But I did not find a
better formulation without being heavy in the formaluation. Better
suggestions welcome. Maybe something like:
{{{
- ``color_by_label`` - a boolean, dictionary or function (default:
False)
whether to color each edge with a different color according
to its label; the value can be a function or
dictionary mapping labels to colors; this option is
incompatible with ``edge_color`` and ``edge_colors``.
}}}
> This being said, what would you think of a `color_by_label` argument
that can be set to `False` (all edges receive the same color), to a
dictionary like you do right now, or to `True`, in which case you can give
each label a specific color (with `g.edge_labels()` and `rainbow`) ?
This is exactly what this is doing currently, isn't it?
Cheers,
Nicolas
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14177#comment:5>
Sage <http://www.sagemath.org>
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