Paulo César Pereira de Andrade wrote:
> 2009/9/15 kcrisman <kcris...@gmail.com>:
>>>> As for you for now, you'd need to change the eigenvectors() command in
>>>> the matrix code.  If you wanted to do so and submit a patch, it would be
>>>> greatly appreciated!
>> But all doctests pass for me in alpha1:
>>
>> ./sage -t "devel/sage/sage/matrix/"
>> All tests passed!
>> Total time for all tests: 177.1 seconds
> 
>   I get slightly different results, with two known (hopefully :-)
> "minor" problems:
> % sage -t "devel/sage/sage/matrix/"
> ...
> sage -t  "devel/sage/sage/matrix/matrix_double_dense.pyx"
> **********************************************************************
> File "/usr/share/sage/devel/sage/sage/matrix/matrix_double_dense.pyx", line 
> 996:
>     sage: V
> Expected:
>     [-0.392540507864  0.824163383692  0.408248290464]
>     [-0.560772154092  0.137360563949 -0.816496580928]
>     [ -0.72900380032 -0.549442255795  0.408248290464]
> Got:
>     [-0.392540507864  0.824163383692 -0.408248290464]
>     [-0.560772154092  0.137360563949  0.816496580928]
>     [ -0.72900380032 -0.549442255795 -0.408248290464]
> **********************************************************************
> 1 items had failures:
>    1 of  27 in __main__.example_28
> ***Test Failed*** 1 failures.
> ...


Just a sign issue on the last eigenvector, it looks like, which is not a 
problem mathematically.  The doctest should probably just check to see 
that the vector is really an eigenvector, rather than check the actual 
output.


> sage -t  "devel/sage/sage/matrix/constructor.py"
> **********************************************************************
> File "/usr/share/sage/devel/sage/sage/matrix/constructor.py", line 155:
>     sage: g = graphs.PetersenGraph()
> Expected nothing
> Got:
>     doctest:16: DeprecationWarning: the sets module is deprecated
>     doctest:18: DeprecationWarning:
>     **********************************************************
>     matplotlib.numerix and all its subpackages are deprecated.
>     They will be removed soon.  Please use numpy instead.
>     **********************************************************
>     <BLANKLINE>
> **********************************************************************
> 1 items had failures:
>    1 of  94 in __main__.example_1
> ***Test Failed*** 1 failures.
> ...
> 

The numerix issue should be fixed in #5448, IIRC.


-- 
Jason Grout


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