Hi all,
I finally grabbed a few minutes to bang away on the vecmath transition;
check out a PR into the matrix branch here:
https://github.com/geotools/geotools/pull/813. I tracked down the
existing test failures; 3 changes to GeneralMatrix.java and an update of
the exception to catch in ProjectiveTransform.java made everything go.
Additionally, I started a GeneralMatrixTest file. It isn't complete,
and I'm hoping that its current state is beneficial. I am quite happy
for someone else to pitch in some more test cases; it was a helpful
exercise is understanding some of the details of the constructors and
various functions.
As an amusement, I noticed that getRow is private and getCol is public.
Anyhow, apologies for not updating the proposal to reflect the idea of
adding test coverage for GeneralMatrix.
What else remains to get all this merged in? If there are any
formatting concerns, lemme know.
Thanks,
Jim
On 03/14/2015 09:24 PM, Jody Garnett wrote:
I think you are doing the coordination right now on this email thread
( the tasks section of the proposal is also good).
I like your idea to make a general matrix testing master - add that to
the tasks section of the proposal and stick your initials next to it
if you are in position to volunteer.
I hope other PMC members can review the plan and vote.
On Sat, Mar 14, 2015 at 3:12 PM Jim Hughes <jn...@ccri.com
<mailto:jn...@ccri.com>> wrote:
Hi all,
Jody, Tyler, and I hacked at this on Friday during a code sprint.
The partial results are here:
https://github.com/geotools/geotools/commits/matrix
There are a few remaining errors to track down, and the cautious
part of me wants to go back and cook up a set of unit tests for
GeneralMatrix.
Anyhow, since we are all traveling for the next few days, I wanted
to ask what the best way to coordinate future effort is?
If anyone else is interested pitching in, let us know.
Thanks,
Jim
p.s. The commits from an 'Alex Tatusko' are from me. I goofed up
and didn't change the Git info on a loaner laptop.
On 03/13/2015 03:55 PM, Jody Garnett wrote:
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
<andrea.a...@geo-solutions.it
<mailto:andrea.a...@geo-solutions.it>> wrote:
On Fri, Mar 13, 2015 at 7:57 PM, Jody Garnett
<jody.garn...@gmail.com <mailto:jody.garn...@gmail.com>> 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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