api / koma.matrix / Matrix / cumSum

cumSum

open fun cumSum():Matrix<T>

Calculates the cumulative (ongoing) sum of a matrix's elements. For example, cumsum(mat[1,2,3]) would return mat[1,3,6]. Assumes matrix type is convertible to double.

@return A 1xarr.numRows*arr.numCols vector storing the ongoing cumsum.