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Row (column) variances for dbMatrix objects

Source: R/operations.R
row_col_vars.Rd

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

Usage

# S4 method for class 'dbDenseMatrix'
rowVars(
  x,
  rows = NULL,
  cols = NULL,
  na.rm = TRUE,
  center = NULL,
  ...,
  useNames = TRUE
)

# S4 method for class 'dbSparseMatrix'
rowVars(
  x,
  rows = NULL,
  cols = NULL,
  na.rm = TRUE,
  center = NULL,
  ...,
  useNames = TRUE
)

# S4 method for class 'dbDenseMatrix'
colVars(
  x,
  rows = NULL,
  cols = NULL,
  na.rm = TRUE,
  center = NULL,
  ...,
  useNames = TRUE
)

# S4 method for class 'dbSparseMatrix'
colVars(
  x,
  rows = NULL,
  cols = NULL,
  na.rm = TRUE,
  center = NULL,
  ...,
  useNames = TRUE
)

Arguments

x

A dbMatrix object.

rows

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

cols

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

na.rm

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

center

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

...

Additional arguments (not used, but included for compatibility with the generic).

useNames

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