#12929: Changing default color option for posets
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Reporter: aschilling | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-5.1
Component: combinatorics | Resolution:
Keywords: poset, days38, plot, graphs | Work issues:
Report Upstream: N/A | Reviewers: Franco Saliola
Authors: Viviane Pons | Merged in:
Dependencies: | Stopgaps:
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Changes (by VivianePons):
* cc: saliola, VivianePons (added)
* keywords: poset, days38 => poset, days38, plot, graphs
* status: new => needs_review
Old description:
New description:
The problem was that the posets appeared by default with a dark blue color
on vertices which was not very pretty and made it difficult to read
because the text was still in black.
Actually, the problem was coming from a little bug on Graph plot :
{{{
sage: G = Graph()
sage: G.add_vertex(1)
sage: G.plot()
sage: G.plot(vertex_colors=None)
}}}
Giving "vertex_colors=None" didn't give the same result as not sending any
vertex_colors. In the first case, the default behaviour of the graph plot
(which gives some king of pale beige to the vertices) was not followed and
for some reason the ugly blue appeared.
To fix it, I had to make a small change to the graph_plot.py in the way
arguments were tested. It seems that all argument are tested the same way
but I don't know if it is causing any trouble for other arguments so I
only changed the "vertex_colors" test.
I didn't add any tests because I don't know how to test that the plot of a
graph is done with blue or with some other color...
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12929#comment:1>
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