Row (column) sums for dbMatrix objects

Calculates the sum for each row (column) of a matrix-like object.

Usage

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

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

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

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

Arguments

x

An NxK matrix-like object, a numeric data frame, or an array-like object of two or more dimensions.

na.rm

Always TRUE for dbMatrix. Included for compatibility with the generic.

dims

Always 1 for dbMatrix queries. Included for compatibility with the generic.

...

Additional arguments passed to specific methods.

memory

logical. If FALSE (default), results returned as dbDenseMatrix. This is recommended for large computations. Set to TRUE to return the results as a vector.