rowProds {MatrixGenerics} | R Documentation |
Calculates the product for each row (column) of a matrix-like object
Description
Calculates the product for each row (column) of a matrix-like object.
Usage
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)
Arguments
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. |
Details
The S4 methods for x
of type matrix
,
array
, or numeric
call
matrixStats::rowProds
/ matrixStats::colProds
.
Value
Returns a numeric
vector
of length N (K).
See Also
-
matrixStats::rowProds()
andmatrixStats::colProds()
which are used when the input is amatrix
ornumeric
vector. For sums across rows (columns), see
rowSums2()
(colSums2()
)-
base::prod()
.
Examples
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)