Not yet still working on a succinct testable difference.
On Thu, May 7, 2015 at 8:31 AM Eric Engle <een...@google.com> wrote:
> "A wise man said: do not bring two compasses; bring one, or three."
>
> Anyone fired up a math tool to check the true exact result?
>
> Depending on the API you're using, EJML may do smarter things in several
> cases to produce more accurate results.
>
> On Thu, May 7, 2015 at 8:23 AM, Jody Garnett <jody.garn...@gmail.com>
> wrote:
>
>> I also captured the different inverse result encountered earlier (as a
>> test case). I think I could take this one to the EJML mailing list as a
>> bug/accuracy report.
>>
>> --
>> Jody Garnett
>>
>> On 7 May 2015 at 00:41, Andrea Aime <andrea.a...@geo-solutions.it> wrote:
>>
>>> On Wed, May 6, 2015 at 11:43 PM, Jody Garnett <jody.garn...@gmail.com>
>>> wrote:
>>>>
>>>> I am quite discouraged by the regression shown with GEOS-7009
>>>> <https://osgeo-org.atlassian.net/browse/GEOS-7009> - in particular the
>>>> same WMS request produces two different GetMap results (see the issue
>>>> screen snaps) I am not sure what to make of that as all our rendering tests
>>>> pass at the GeoTools level.
>>>>
>>>
>>> The difference seems rather severe, even if it happened before the
>>> rescaling, we are talking about a shift of 3 pixels up, 1 left, that seems
>>> unlikely to be just a numerical glitch.
>>> Trying to make a guess, and assuming the obvious math is taken care of,
>>> how about matrix inversion? We do a lot of transformation inversion in our
>>> code.
>>>
>>> Cheers
>>> Andrea
>>>
>>>
>>>
>>>
>>> --
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