#9720: Add random echelonizable matrices to matrix/constructor.py
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Reporter: bwonderly | Owner: jason, was
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-4.5.3
Component: linear algebra | Keywords:
Author: Billy Wonderly | Upstream: N/A
Reviewer: David Joyner | Merged:
Work_issues: |
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Comment(by mhansen):
Replying to [comment:15 rbeezer]:
> Would you pass some sort of selector in {{{*args}}}, then make these
methods of some class of matrices? How would the documentation be
immediately or easily accessible? Is there a model we can follow
someplace else in Sage?
You can leave the functions as they are -- just don't import them into the
global namespace. Then, if you do,
{{{
sage: a = random_matrix(QQ, 3, 3, rref=True)
sage: b = random_matrix(QQ, 3, 3, echelonizable=True)
}}}
which just delegate to the appropriate function. You can add a reference
to those functions in the docstring of {{{random_matrix}}}.
Also, the documentation is not clear on why there is special casing for ZZ
and QQ, and that these methods don't work for inexact rings. Although,
you could argue that if you have one of these matrices over {{{ZZ}}} you
could just convert all the entries to {{{RR}}} and things "should" be
fine.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9720#comment:17>
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