#14757: Poset's show() method applied to an antichain gives bad picture
-------------------------------------------+--------------------------------
Reporter: darij | Owner: sage-combinat
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.11
Component: combinatorics | Resolution:
Keywords: combinat, poset, days49 | Work issues:
Report Upstream: N/A | Reviewers: Travis Scrimshaw
Authors: Darij Grinberg | Merged in:
Dependencies: | Stopgaps:
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Changes (by tscrim):
* status: needs_work => needs_review
Old description:
> {{{
> sage: Poset({1: [], 2: [], 3: []}).show()
> }}}
>
> It shows all three elements as the same point. I suspect this hails from
> the {{{plot}}} method on Poset, since a digraph with no edges shows fine.
>
> In the docstring of the {{{plot}}} method on Poset, there's also a typo:
> {{{empy}}}.
>
> EDIT: This one can only be reproduced without dot2tex installed, since
> the methods branch depending on whether it is there or not.
>
> * Apply: [attachment:trac_14757-acyclic_layout-dg.patch]
New description:
{{{
sage: Poset({1: [], 2: [], 3: []}).show()
}}}
It shows all three elements as the same point. I suspect this hails from
the {{{plot}}} method on Poset, since a digraph with no edges shows fine.
In the docstring of the {{{plot}}} method on Poset, there's also a typo:
{{{empy}}}.
EDIT: This one can only be reproduced without dot2tex installed, since the
methods branch depending on whether it is there or not.
* Apply: [attachment:trac_14757-acyclic_layout-ts.patch]
--
Comment:
Hey Jeroen,
Try this version. I can't see why Darij's patch doesn't apply...
For patchbot:
Apply: trac_14757-acyclic_layout-ts.patch
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14757#comment:7>
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