It looks to me as if the two left hooks form one big left hook, not that I'm into boxing:
mn =: -"1 mean mp1=: mp~|: ((mp1 mn)%#)data NB. big "hook" 504 360 180 360 360 0 180 0 720 ((mp1 @: mn)%#)data NB. mp1 after mn using @: 504 360 180 360 360 0 180 0 720 (([: mp1 mn)%#)data NB. mp1 after mn using [: 504 360 180 360 360 0 180 0 720 Any use? Mike On 12/02/2017 08:06, Lippu Esa wrote:
]data=. 5 3 $ 90 60 90 90 90 30 60 60 60 60 60 90 30 30 30 mean=: +/%# mp=: +/ . * covmat=: ((mp~|:)(-"1 mean))%# NB. divede by n not n-1 to comply with the example
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