#20286: Constructing matrix from numpy ignores ring
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Reporter: jdemeyer | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-7.2
Component: linear algebra | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/constructing_matrix_from_numpy_ignores_ring|
80ed2fbaa4099cc1fa0507df86bbeae195b13eb1
Dependencies: | Stopgaps:
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Changes (by jdemeyer):
* status: new => needs_review
* commit: => 80ed2fbaa4099cc1fa0507df86bbeae195b13eb1
Old description:
> {{{
> sage: M = matrix(QQ, 2, 2, [1, 1/2, 1/3, 1/4])
> sage: M
> [ 1 1/2]
> [1/3 1/4]
> sage: matrix(QQ, M.numpy())
> [ 1.0 0.5]
> [0.3333333333333333 0.25]
> }}}
New description:
{{{
sage: M = matrix(QQ, 2, 2, [1, 1/2, 1/3, 1/4])
sage: M
[ 1 1/2]
[1/3 1/4]
sage: matrix(QQ, M.numpy())
[ 1.0 0.5]
[0.3333333333333333 0.25]
}}}
The latter should give a matrix over QQ.
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Comment:
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=80ed2fbaa4099cc1fa0507df86bbeae195b13eb1
80ed2fb]||{{{Use ring when constructing a matrix from numpy}}}||
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Ticket URL: <http://trac.sagemath.org/ticket/20286#comment:2>
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