rowProds {MatrixGenerics} | R Documentation |
Calculates the product for each row (column) of a matrix-like object.
rowProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ...) ## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric' rowProds(x, rows = NULL, cols = NULL, na.rm = FALSE, method = c("direct", "expSumLog"), ...) ## S4 method for signature 'ANY' rowProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ...) colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ...) ## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric' colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, method = c("direct", "expSumLog"), ...) ## S4 method for signature 'ANY' colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)
x |
An NxK matrix-like object. |
rows, cols |
A |
na.rm |
|
... |
Additional arguments passed to specific methods. |
method |
A character vector of length one that specifies the how the product is calculated. Note, that this is not a generic argument and not all implementation have to provide it. |
The S4 methods for x
of type matrix
,
array
, or numeric
call
matrixStats::rowProds
/ matrixStats::colProds
.
Returns a numeric
vector
of length N (K).
matrixStats::rowProds()
and
matrixStats::colProds()
which are used
when the input is a matrix
or numeric
vector.
For sums across rows (columns), see
rowSums2()
(colSums2()
)
base::prod()
.
mat <- matrix(rnorm(15), nrow = 5, ncol = 3) mat[2, 1] <- NA mat[3, 3] <- Inf mat[4, 1] <- 0 print(mat) rowProds(mat) colProds(mat)