#17474: directed graph from polyhedron
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Reporter: chapoton | Owner:
Type: enhancement | Status: needs_info
Priority: minor | Milestone: sage-6.5
Component: geometry | Resolution:
Keywords: polyhedron, | Merged in:
digraph | Reviewers:
Authors: Frédéric Chapoton | Work issues:
Report Upstream: N/A | Commit:
Branch: u/tmonteil/17474 | 5878286fec9dba9d2069ae8a81d76cc0f134f518
Dependencies: | Stopgaps:
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Changes (by tmonteil):
* commit: 37a6f281cfd5700ceb23e078f7beeddde5b1d862 =>
5878286fec9dba9d2069ae8a81d76cc0f134f518
Comment:
Replying to [comment:12 chapoton]:
> How can I check if the input is a linear form ?
I uploaded a patch that checks if the input is an instance of
`VectorSpaceMorphism` whose codomain has dimension 1.
I removed from the doc the possibility to input a list or a tuple since it
was not working in the previous version (it is doable to try/except `f =
vector(f)` but i am not sure we have to think for the user).
> I have also added a keyword to ask for the reverse orientation.
It works well. Do you have some important reason to go in the decreasing
direction by default ? If not, i would prefer to have it the other way by
default, to be consistent with the MILP default, but perhaps i miss some
other use case.
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New commits:
||[http://git.sagemath.org/sage.git/commit/?id=5878286fec9dba9d2069ae8a81d76cc0f134f518
5878286]||{{{#17474 allow genuine linear forms as input}}}||
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Ticket URL: <http://trac.sagemath.org/ticket/17474#comment:14>
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