Package ucar.nc2.iosp.hdf5

Class Tiling

java.lang.Object

ucar.nc2.iosp.hdf5.Tiling

public class Tiling
extends Object

A Tiling divides a multidimensional index into tiles. Abstraction of HDF5 chunking.

Index are points in the original multidimensional index. Tiles are points in the tiled space.

Each tile has the same size, given by tileSize.

Since:

Jul 20, 2007

Constructor Summary

Constructors

Constructor	Description
Tiling(int[] shape, int[] chunk)	Create a Tiling

Method Summary

Modifier and Type	Method	Description
int	compare(int[] p1, int[] p2)	Create an ordering of index points based on which tile the point is in.
int	order(int[] pt)	Get order based on which tile the pt belongs to
int[]	tile(int[] pt)	Compute the tile

Methods inherited from class java.lang.Object

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

Constructor Detail

Tiling

public Tiling(int[] shape,
              int[] chunk)

Create a Tiling

Parameters:

shape - overall shape of the dataset's index space

chunk - tile size. may be larger than the shape.

Method Detail

tile

public int[] tile(int[] pt)

Compute the tile

Parameters:

pt - index point

Returns:

corresponding tile

order

public int order(int[] pt)

Get order based on which tile the pt belongs to

Parameters:

pt - index point

Returns:

order number based on which tile the pt belongs to

compare

public int compare(int[] p1,
                   int[] p2)

Create an ordering of index points based on which tile the point is in.

Parameters:

p1 - index point 1

p2 - index point 2

Returns:

order(p1) - order(p2) : negative if p1 < p2, positive if p1 > p2 , 0 if equal