How can i operate on every row of a matrix without using any loop?

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Sarp Özdemir 2021-4-21

评论： DGM 2021-4-21

采纳的回答： DGM

I have to find the cumulative sum of every row seperately without using any kind of loops in the following matrix;

c = exprnd(1,1000,100);

so i should get a thound rows of cumsum(exprnd(1,1,100)).

DGM 2021-4-21

Something like this:

A=randi(9,4)
B=cumsum(A,2)

gives:

A =
   6     9     9
   1     9     5
   3     2     8
   5     9     2
B =
  14    23    32
  10    19    24
   5     7    15
  14    23    25

Sarp Özdemir 2021-4-21

thank you so much.

what is the function of that 2, i didnt get it?

DGM 2021-4-21

That specifies the dimension to operate along. i.e. dim2, rows

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