cumsum
cumsum(X) returns the cumulative sum of vector X.
If X is a matrix, the cumulative sum is calculated row by row.
cumsum(X, dim) returns the cumulative sum of X along dimension dim.
If X is a matrix, the cumulative sum is calculated row by row.
cumsum(X, dim) returns the cumulative sum of X along dimension dim.
Examples
> cumsum(1:4)# 1 3 6 10
> cumsum([1 2 2; 2 4 3; 2 2 2])# 1 2 2 3 6 5 5 8 7
> cumsum([1 2 2; 2 4 3])# 1 2 2 3 6 5
> cumsum([1 2 2; 2 4 3],2)# 1 3 5 2 6 9