colCounts,xgCMatrix-method {sparseMatrixStats} | R Documentation |
Count how often an element in a row (column) of a matrix-like object is equal to a value.
## S4 method for signature 'xgCMatrix' colCounts(x, rows = NULL, cols = NULL, value = TRUE, na.rm = FALSE) ## S4 method for signature 'xgCMatrix' rowCounts(x, rows = NULL, cols = NULL, value = TRUE, na.rm = FALSE)
x |
An NxK matrix-like object. |
rows |
A |
cols |
A |
value |
The value to search for. |
na.rm |
The S4 methods for x
of type matrix
,
array
, or numeric
call
matrixStats::rowCounts
/ matrixStats::colCounts
.
Returns a integer
vector
of length N (K).
matrixStats::rowCounts()
and
matrixStats::colCounts()
which are
used when the input is a matrix
or numeric
vector.
For checks if any element is equal to a value, see
rowAnys()
. To check if all elements are equal, see
rowAlls()
.
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)