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https://issues.apache.org/jira/browse/MATH-263?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luc Maisonobe resolved MATH-263.
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Resolution: Fixed
Assignee: Luc Maisonobe
fixed in subversion as of r769880
> Various distance methods in "Vector3D"
> --------------------------------------
>
> Key: MATH-263
> URL: https://issues.apache.org/jira/browse/MATH-263
> Project: Commons Math
> Issue Type: New Feature
> Reporter: Gilles
> Assignee: Luc Maisonobe
> Priority: Minor
>
> Hi.
> As was discussed in the ML (cf. '[math] "equals" in "Vector3D"' thread), it
> would be useful to add the various distance methods: L1 norm, L2 norm,
> L-infinity norm.
> One suggestion has been to use an enum:
> enum Norm { L_0, L_1, L_2, L_infinity };
> static double distance(Vector3D a, Vector3D b, Norm n) { ... }
> Another, to define several methods:
> a.distance1(b) { ... }
> a.distance(b) { ... }
> a.distanceInf(b) { ... }
> At the cost of longer typing (but maybe there are other advantages) the above
> could also be static.
> Best,
> Gilles
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