You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@commons.apache.org by "Gilles (JIRA)" <ji...@apache.org> on 2015/06/28 14:11:05 UTC

[jira] [Created] (MATH-1244) Add "cosAngle" method in "MathArrays"

Gilles created MATH-1244:
----------------------------

             Summary: Add "cosAngle" method in "MathArrays"
                 Key: MATH-1244
                 URL: https://issues.apache.org/jira/browse/MATH-1244
             Project: Commons Math
          Issue Type: New Feature
            Reporter: Gilles
            Assignee: Gilles
            Priority: Trivial
             Fix For: 4.0, 3.6


Similar to other utilities (e.g. "distance") that interprets a Java array as Cartesian coordinates, I propose to add the function that calculates the cosine of the angle between two vectors:
{code}
public static double cosAngle(double[] v1, double[] v2) {
    return linearCombination(v1, v2) / (safeNorm(v1) * safeNorm(v2));
{code}




--
This message was sent by Atlassian JIRA
(v6.3.4#6332)