gpuR-block: Matrix Blocks

In cdeterman/gpuR: GPU Functions for R Objects

Description

This doesn't create a copy, it provides a child class that points to a contiguous submatrix of a gpuMatrix or vclMatrix. Non-contiguous blocks are currently not supported.

Usage

block(object, rowStart, rowEnd, colStart, colEnd)

## S4 method for signature 'vclMatrix,integer,integer,integer,integer'
block(object,
  rowStart, rowEnd, colStart, colEnd)

## S4 method for signature 'gpuMatrix,integer,integer,integer,integer'
block(object,
  rowStart, rowEnd, colStart, colEnd)

Arguments

object	A gpuMatrix or vclMatrix object
rowStart	An integer indicating the first row of block
rowEnd	An integer indicating the last row of block
colStart	An integer indicating the first column of block
colEnd	An integer indicating the last column of block

Details

This function allows a user to create a gpuR matrix object that references a continuous subset of columns and rows of another gpuR matrix object without a copy.

NOTE - this means that altering values in a matrix block object will alter values in the source matrix.

Value

A gpuMatrixBlock or vclMatrixBlock object

Author(s)

Charles Determan Jr.

cdeterman/gpuR documentation built on July 13, 2019, 3:15 a.m.