Feature #4891: Vector#normalize

• Status: Closed
• Assignee: marcandre (Marc-Andre Lafortune)
• Target version: 1.9.3

[mrkn (Kenta Murata)]

知人からベクトルを正規化するメソッドが無いよと言われました。

いままで誰も気付かなかった (もしくは気付いても放っておいた) のですが、
存在してて当然のメソッドのような気がするので追加の提案をします。

パッチはこれです。
https://gist.github.com/1029140

[mrkn (Kenta Murata)]

Bug じゃなくて Feature にするつもりでした。
Bug から Feature へ後から変更することはできないんでしょうか？

[sorah (Sorah Fukumori)]

• Tracker changed from Bug to Feature

[marcandre (Marc-Andre Lafortune)]

• Status changed from Open to Assigned
• Assignee changed from keiju (Keiju Ishitsuka) to marcandre (Marc-Andre Lafortune)
• Target version changed from 2.0.0 to 1.9.3

Sure.

I have to merge in my announced changes to Matrix & Vector in 1.9.3 as soon as I get the time, so I could include this too. Are we after the official feature freeze yet (I don't see the 1.9.3 branch)?

[sakuro (Sakuro OZAWA)]

=begin
Just for curiosity's sake, what is expected from Vector[0,0,0].normalize ?

• ((<WolframAlpha|URL:http://www.wolframalpha.com/input/?i=normalize+%280%2C0%2C0%29>)) says: the zero vector cannot be normalized.
• The patch gives Vector[NaN, NaN, NaN].
• returns (dup of) self?
• domain error?
  =end

[marcandre (Marc-Andre Lafortune)]

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

Applied as r32467, thank you!