BigMatrix: Create a new BigMatrix

In bigmemoryExtras: An extension of the bigmemory package with added safety, convenience, and a factor class

Description

Create a new BigMatrix

Usage

  BigMatrix(x = NA_real_, backingfile, nrow, ncol,
    dimnames = NULL, type = "double")

Arguments

x	scalar numeric, NULL, matrix, or big.matrix. Optional data or big.matrix for new BigMatrix. A scalar numeric can be used to initalize the whole matrix. NULL gives the bigmemory feature of initializing to all zeros instantly.
backingfile	character, full path to the file that will contain the data matrix
nrow	integer, number of rows in the matrix we are about to create
ncol	integer, number of columns in the matrix we are about to create
dimnames	list, list(rownames,colnames), as for a typical matrix
type	character type of big.matrix (double, integer, char)

Value

BigMatrix

Examples

dnames = dimnames=list(letters[1:3],LETTERS[1:3])
x = matrix(1:9,ncol=3,dimnames=dnames)
ds = BigMatrix(x,tempfile())
ds = BigMatrix(backingfile=tempfile(),nrow=3,ncol=3,dimnames=dnames)

bigmemoryExtras documentation built on Nov. 8, 2020, 5:17 p.m.