Hi.
Le mar. 28 mai 2019 à 10:31, LE TELLIER Romain 211391
<[email protected]> a écrit :
>
> Hello,
>
> Yes, Apache Commons Maths has what you need. Start by having a look at the
> org.apache.commons.math3.geometry.euclidean.threed package and the Vector3D
> class
> https://commons.apache.org/proper/commons-math/userguide/geometry.html
This Javadoc page may be more to the point:
https://commons.apache.org/proper/commons-math/javadocs/api-3.6.1/org/apache/commons/math3/geometry/euclidean/threed/Vector3D.html
> By the way, I have understand that this geometry package will be supplanted
> by the apache commons geometry
> (https://commons.apache.org/proper/commons-geometry/)
Indeed. The new class, equivalent to the above is:
https://gitbox.apache.org/repos/asf?p=commons-geometry.git;a=blob;f=commons-geometry-euclidean/src/main/java/org/apache/commons/geometry/euclidean/threed/Vector3D.java
> but there is no release yet.
True but the refactoring work is ongoing (see posts on the "dev" ML),
and reviewers are most welcome.
> Does anybody knows what is the associated schedule?
ASAP. ;-)
[The more people express an interest, the greater the motivation...]
And we are looking for actual use-cases (for integration testing and
in order to populate a "Get Started" userguide).
Also, the new "Commons Geometry" component will depend on the
new "Commons Numbers" component (that is as yet unreleased too).
Reviewers/contributors for this "core" dependency are also most
wanted in order to iron out the pending issues:
https://issues.apache.org/jira/projects/NUMBERS/issues/NUMBERS-74?filter=allopenissues
Please chime in on the "dev" ML if you'd like to help.
Thanks,
Gilles
>
> Best regards,
> Romain
>
> -----Message d'origine-----
> De : Oscar Bastidas [mailto:[email protected]]
> Envoyé : mardi 28 mai 2019 09:38
> À : [email protected]
> Objet : [math] Vector math question
>
> Hello,
>
> I have some calculations that specifically involve:
>
> 1) calculating vectors from 3-dimensional x, y, z points in Euclidean space
>
> 2) performing dot products with the aforementioned vectors
>
> 3) finding vector length
>
> Would someone please tell me if Apache Commons Math has tools to calculate
> these quantities, and if so, what is the complete import statements to summon
> these classes and their methods? Thanks.
>
> Oscar
>
> Oscar Bastidas, Ph.D.
> Postdoctoral Research Associate
> University of Minnesota
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