Package org.apache.sysds.runtime.frame.data.lib

Class MatrixBlockFromFrame

java.lang.Object

org.apache.sysds.runtime.frame.data.lib.MatrixBlockFromFrame

public class MatrixBlockFromFrame
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	blocksizeIJ
static final org.apache.commons.logging.Log	LOG
static Boolean	WARNED_FOR_FAILED_CAST

Method Summary

Modifier and Type	Method	Description
static MatrixBlock	convertToMatrixBlock(FrameBlock frame, int k)	Converts a frame block with arbitrary schema into a matrix block.
static MatrixBlock	convertToMatrixBlock(FrameBlock frame, MatrixBlock ret, int k)	Converts a frame block with arbitrary schema into a matrix block.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LOG

public static final org.apache.commons.logging.Log LOG

blocksizeIJ

public static final int blocksizeIJ

See Also:

• Constant Field Values

WARNED_FOR_FAILED_CAST

public static Boolean WARNED_FOR_FAILED_CAST

Method Details

convertToMatrixBlock

public static MatrixBlock convertToMatrixBlock(FrameBlock frame,
 int k)

Converts a frame block with arbitrary schema into a matrix block. Since matrix block only supports value type double, we do a best effort conversion of non-double types which might result in errors for non-numerical data.

Parameters:

frame - Frame block to convert

k - The parallelization degree

Returns:

MatrixBlock

convertToMatrixBlock

public static MatrixBlock convertToMatrixBlock(FrameBlock frame,
 MatrixBlock ret,
 int k)

Converts a frame block with arbitrary schema into a matrix block. Since matrix block only supports value type double, we do a best effort conversion of non-double types which might result in errors for non-numerical data.

Parameters:

frame - FrameBlock to convert

ret - The returned MatrixBlock

k - The parallelization degree

Returns:

MatrixBlock