as.symDMatrix.matrix {symDMatrix}

Coerce a Matrix to a symDMatrix Object

Description

This function creates a symDMatrix from a numeric matrix that is assumed to be symmetric.

Usage

## S3 method for class 'matrix'
as.symDMatrix(x, blockSize = 5000L, vmode = "double",
  folderOut = randomString(), ...)

Arguments

x

A symmetric numeric matrix.

blockSize

The number of rows and columns of each block. If NULL, a single block of the same dimensions as x will be created. Defaults to 5000.

vmode

The vmode used to store the data in the ff objects.

folderOut

A name for a folder where to store the data of the resulting symDMatrix object.

...

Additional arguments (currently unused).

Details

The input matrix is broken into blocks and each block is stored as an ff_matrix object. In addition, a metadata object called symDMatrix.RData is created to allow for easy reloading of the symDMatrix object.

Value

A symDMatrix object.

See Also

load.symDMatrix to reload the symDMatrix object.