Row and column summary methods for adgCMatrix

Compute row or column sums and means for a sparse adgCMatrix, dispatching through the amatrix backend when GPU acceleration is available.

Usage

# S4 method for class 'adgCMatrix'
rowSums(x, na.rm = FALSE, dims = 1L)

# S4 method for class 'adgCMatrix'
colSums(x, na.rm = FALSE, dims = 1L)

# S4 method for class 'adgCMatrix'
rowMeans(x, na.rm = FALSE, dims = 1L)

# S4 method for class 'adgCMatrix'
colMeans(x, na.rm = FALSE, dims = 1L)

Arguments

x

An adgCMatrix.

na.rm

Logical; if TRUE, NA values are ignored.

dims

Integer; dimensions to sum over (passed to the backend).

Value

A numeric vector of length equal to the number of rows or columns.

Examples

sp <- as(matrix(c(1, 0, 2, 0, 3, 0), 2, 3), "dgCMatrix")
A  <- adgCMatrix(sp)
rowSums(A)
#> [1] 6 0
colMeans(A)
#> [1] 0.5 1.0 1.5