#10604: Rewrite diagonal matrix constructor
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Reporter: rbeezer | Owner: ddrake
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-4.6.2
Component: linear algebra | Keywords:
Author: Rob Beezer | Upstream: N/A
Reviewer: Dan Drake | Merged:
Work_issues: |
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Comment(by ddrake):
Replying to [comment:15 jdemeyer]:
> There are some doctest failures:
The root of the problem is line 4426 in the `stack()` method in
`matrix_integer_dense.pyx`:
{{{
cdef Matrix_integer_dense A = other
}}}
which works poorly when given a sparse matrix.
Interestingly, it works the other way around: you can stack a sparse
matrix on top of a dense one. So we need to fix `stack()` for dense
matrices.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10604#comment:19>
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