colCumsums,xgCMatrix-method {sparseMatrixStats} | R Documentation |
Calculates the cumulative sum for each row (column) of a matrix-like object.
## S4 method for signature 'xgCMatrix' colCumsums(x, rows = NULL, cols = NULL, useNames = NA) ## S4 method for signature 'xgCMatrix' rowCumsums(x, rows = NULL, cols = NULL, useNames = NA)
x |
An NxK matrix-like object. |
rows |
A |
cols |
A |
useNames |
If |
The S4 methods for x
of type matrix
,
array
, or numeric
call
matrixStats::rowCumsums
/ matrixStats::colCumsums
.
Returns a numeric
matrix
with the same
dimensions as x
.
matrixStats::rowCumsums()
and
matrixStats::colCumsums()
which are
used when the input is a matrix
or numeric
vector.
base::cumsum()
.
mat <- matrix(rnorm(15), nrow = 5, ncol = 3) mat[2, 1] <- NA mat[3, 3] <- Inf mat[4, 1] <- 0 print(mat) rowCumsums(mat) colCumsums(mat)