cbindBM: cbind functionality for class "big.matrix"
In cdeterman/bigmemoryExt: Bigmemory Extensions

Description Usage Arguments Details Value

This is used to bind columns to big.matrix objects, with the new copy optionally filebacked

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cbindBM(x, y, binding = "right", cols.x = NULL, cols.y = NULL, z = NULL,
  type = NULL, separated = NULL, backingfile = NULL, backingpath = NULL,
  descriptorfile = NULL, binarydescriptor = FALSE, shared = TRUE)

`x`	A `"big.matrix"`
`y`	Columns to append, accepts `"big.matrix"` and `"matrix"` in addition to `"numeric"` and `"integer"` (e.g. "2.5", "1L")
`binding`	Binding location, "right" or "left"
`cols.x`	Possible subset of columns from the x object; could be numeric, named, or logical
`cols.y`	Possible subset of columns from the y object if a matrix type object otherwise ignored; could be numeric, named, or logical
`z`	Optional destinitation object (matrix or big.matrix); if not specified, a big.matrix will be created
`type`	preferably specified (e.g. "integer", "double", etc.)
`separated`	use separated column organization of the data instead of column-major organization; use with caution if the number of columns is large.
`backingfile`	the root name for the file(s) for the cache of x.
`backingpath`	the path to the directory containing the file backing cache
`descriptorfile`	the name of the file to hold the backingfile description, for subsequent use with `attach.big.matrix`; if NULL, the backingfile is used as the root part of the descriptor file name. The descriptor file is placed in the same directory as the backing files.
`binarydescriptor`	the flag to specify if the binary RDS format should be used for the backingfile description, for subsequent use with `attach.big.matrix`; if NULL of FALSE, the dput() file format is used.
`shared`	TRUE by default, and always TRUE if the big.matrix is file-backed. For a non-filebacked big.matrix, shared=FALSE uses non-shared memory, which can be more stable for large (say, >50 allocation can sometimes fail in such cases due to exhausted shared-memory resources in the system.

This is simply a wrapper for "big.matrix" objects whereby a new "big.matrix" is initialized and subsequently filled with the submitted arguments (optionally filtered).

a "big.matrix"

cdeterman/bigmemoryExt documentation built on May 13, 2019, 2:36 p.m.