#10604: Rewrite diagonal matrix constructor
------------------------------+---------------------------------------------
Reporter: rbeezer | Owner: jason, was
Type: defect | Status: new
Priority: minor | Milestone: sage-4.6.2
Component: linear algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
------------------------------+---------------------------------------------
Description changed by rbeezer:
Old description:
> Diagonal matrix constructor fails when given a tuple, and there is a
> request to support numpy arrays as input. This seems easiest to
> accomplish with a re-write and documentation upgrade.
New description:
Diagonal matrix constructor fails when given a tuple, and there is a
request to support numpy arrays as input. This seems easiest to
accomplish with a re-write and documentation upgrade.
`NumPy` array request:
http://groups.google.com/group/sage-
devel/browse_thread/thread/f0ecd06fcf9efb1b
{{{
sage: diagonal_matrix( (1,2,3) )
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
/home/sage/sage-4.6.1.rc1/devel/sage-main/<ipython console> in <module>()
/home/sage/sage-4.6.1.rc1/local/lib/python2.6/site-
packages/sage/matrix/constructor.pyc in diagonal_matrix(arg0, arg1, arg2,
sparse)
1271
1272 if ring is None:
-> 1273 return matrix(nrows, nrows, w, sparse=sparse)
1274 else:
1275 return matrix(ring, nrows, nrows, w, sparse=sparse)
/home/sage/sage-4.6.1.rc1/local/lib/python2.6/site-
packages/sage/matrix/constructor.pyc in matrix(*args, **kwds)
577 ncols = len(args[0]) // nrows
578 elif ncols != len(args[0]) // nrows:
--> 579 raise ValueError, "entries has the wrong
length"
580 elif len(args[0]) > 0:
581 raise ValueError, "entries has the wrong
length"
ValueError: entries has the wrong length
}}}
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10604#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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