Re: [Geotools-devel] Replacing Vecmath

[Jody G. <jod...@gm...>]

A bit more research shows we should support the geotools Matrix and XMatrix
methods (giving us a limited set of methods to implement). Proposal updated
accordingly ...

--
Jody Garnett

On 13 March 2015 at 12:31, Andrea Aime <and...@ge...> wrote:

> On Fri, Mar 13, 2015 at 7:57 PM, Jody Garnett <jod...@gm...>
> wrote:
>
>> At the foss4gna code sprint, here is a proposal to make this change:
>> http://docs.codehaus.org/display/GEOTOOLS/Change+from+vecmath+to+EJML
>>
>> Looking at this with Jim, the library has DenseMatrix64F (which does the
>> work) and an example of wrapping this up for normal use called SimpleMatrix.
>>
>> Each operation in SimpleMatrix makes a copy, an overhead we could avoid
>> by using DenseMatrix64F ourself. So the proposal is to delegate to
>> DenseMatrix64F, using SimpleMatrix (and its friend BaseMatrix) as a guide.
>>
>> Alternatively we could kill our GeneralMatrix class and use SimpleMatrix
>> directly in the rest of the GeoTools codebase, it would be more an an API
>> change - which is okay if people only see this stuff inside MathTransforms.
>> Anyone got an idea on how visible GeneralMatrix is?
>>
>>
> I don't... and guess we should try to keep it around. Anyways, the
> direction appears to be sound, no objections.
>
> Cheers
> Andrea
>
>
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