rowCounts {MatrixGenerics} | R Documentation |
Count how often an element in a row (column) of a matrix-like object is equal to a value
Description
Count how often an element in a row (column) of a matrix-like object is equal to a value.
Usage
rowCounts(x, rows = NULL, cols = NULL, value = TRUE, na.rm = FALSE,
..., useNames = NA)
## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowCounts(x, rows = NULL,
cols = NULL, value = TRUE, na.rm = FALSE, dim. = dim(x), ...,
useNames = NA)
## S4 method for signature 'ANY'
rowCounts(x, rows = NULL, cols = NULL, value = TRUE,
na.rm = FALSE, ..., useNames = NA)
colCounts(x, rows = NULL, cols = NULL, value = TRUE, na.rm = FALSE,
..., useNames = NA)
## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colCounts(x, rows = NULL,
cols = NULL, value = TRUE, na.rm = FALSE, dim. = dim(x), ...,
useNames = NA)
## S4 method for signature 'ANY'
colCounts(x, rows = NULL, cols = NULL, value = TRUE,
na.rm = FALSE, ..., useNames = NA)
Arguments
x |
An NxK matrix-like object. |
rows , cols |
A |
value |
The value to search for. |
na.rm |
|
... |
Additional arguments passed to specific methods. |
useNames |
If |
dim. |
An |
Details
The S4 methods for x
of type matrix
,
array
, or numeric
call
matrixStats::rowCounts
/ matrixStats::colCounts
.
Value
Returns a integer
vector
of length N (K).
See Also
-
matrixStats::rowCounts()
andmatrixStats::colCounts()
which are used when the input is amatrix
ornumeric
vector. For checks if any element is equal to a value, see
rowAnys()
. To check if all elements are equal, seerowAlls()
.
Examples
mat <- matrix(rnorm(15), nrow = 5, ncol = 3)
mat[2, 1] <- NA
mat[3, 3] <- Inf
mat[4, 1] <- 0
print(mat)
rowCounts(mat)
colCounts(mat)
rowCounts(mat, value = 0)
colCounts(mat, value = Inf, na.rm = TRUE)