Ravel: Difference between revisions

Ravel (view source)

14 bytes added , 09:07, 29 October 2019

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 == Description ==
-The ravel of an array <source lang=apl inline>A</code> has shape <source lang=apl inline>,×/⍴A</code> and shares elements with <source lang=apl inline>A</code>. Thus Ravel may be modelled as a [[Reshape|reshaping]] function <source lang=apl inline>{(×/⍴⍵)⍴⍵}</code>. The [[element]] with [[index]] [[vector]] <source lang=apl inline>I</code> is moved to index <source lang=apl inline>(⍴A)⊥I</code> in [[index origin]] 0, or <source lang=apl inline>⎕IO+(⍴A)⊥I-⎕IO</code> in arbitrary index origin.
+The ravel of an array <source lang=apl inline>A</source> has shape <source lang=apl inline>,×/⍴A</source> and shares elements with <source lang=apl inline>A</source>. Thus Ravel may be modelled as a [[Reshape|reshaping]] function <source lang=apl inline>{(×/⍴⍵)⍴⍵}</source>. The [[element]] with [[index]] [[vector]] <source lang=apl inline>I</source> is moved to index <source lang=apl inline>(⍴A)⊥I</source> in [[index origin]] 0, or <source lang=apl inline>⎕IO+(⍴A)⊥I-⎕IO</source> in arbitrary index origin.
 As with any reshaping, the result of Ravel has the same [[prototype]] as the argument.