Split data into different arrays of different sizes?

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pauldjn
pauldjn 2018-10-1
评论： pauldjn 2018-10-1
Hi I have a huge vector of data and I would like to divide it into different groups according to a particular index so lets say my data is a= (1 2 3 4 5 6 7 8....) and my index is i= (1,2,3,4..) which sum is equal to the size of a. How can I split "a" vector according to the index "i"?

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回答（2 个）

KSSV
KSSV 2018-10-1
If a is the vector and index is i.
iwant = a(i)
Stephen23
Stephen23 2018-10-1
accumarray(index(:),a(:),[],@(v){v})
  1 个评论
pauldjn
pauldjn 2018-10-1
I got this error message: Second input VAL must be a vector with one element for each row in SUBS, or a scalar.

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