| 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, ..., useNames = NA)
## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowProds(x, rows = NULL,
cols = NULL, na.rm = FALSE, method = c("direct", "expSumLog"), ...,
useNames = NA)
## S4 method for signature 'ANY'
rowProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)
colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)
## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colProds(x, rows = NULL,
cols = NULL, na.rm = FALSE, method = c("direct", "expSumLog"), ...,
useNames = NA)
## S4 method for signature 'ANY'
colProds(x, rows = NULL, cols = NULL, na.rm = FALSE, ..., useNames = NA)
x |
An NxK matrix-like object. |
rows, cols |
A |
na.rm |
|
... |
Additional arguments passed to specific methods. |
useNames |
If |
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)