visad.data.hdf5.hdf5objects

Class HDF5Dataspace

java.lang.Object

visad.data.hdf5.hdf5objects.HDF5Object

visad.data.hdf5.hdf5objects.HDF5Dataspace

All Implemented Interfaces:

java.io.Serializable

public class HDF5Dataspace
extends HDF5Object

This class provides provides a mechanism to describe the positions of the elements of a dataset.

A dataspace describes the locations that dataset elements are located at. A dataspace is either a regular N-dimensional array of data points, called a simple dataspace, or a more general collection of data points organized in another manner, called a complex dataspace.

For details of the HDF5 libraries, see the HDF5 Documentation at: http://hdf.ncsa.uiuc.edu/HDF5/doc/

See Also:

Serialized Form

Field Summary

Fields inherited from class visad.data.hdf5.hdf5objects.HDF5Object

ATTRIBUTE, DATASET, DATASPACE, DATATYPE, GROUP, HDF5FILE, LINK, UNKNOWN

Constructor Summary

Constructors

Constructor and Description
HDF5Dataspace() Constructs an HDF5Dataspace
HDF5Dataspace(int space_type) Creates a new HDF5Dataspace
HDF5Dataspace(int rank, long[] dims, long[] maxdims) Creates a new HDF5Dataspace

Method Summary

Modifier and Type	Method and Description
long[]	getCount() Returns the selected counts of the data
long[]	getDims() Returns the dimensions of the dataspace
long[]	getMaxdims() Returns the maximum dimensions of the dataspace
int	getRank() Returns the rank of the dataspace
void	init() initialize the HDF5Dataspace: open HDF5 library.
void	select(long[] start, long[] stride, long[] count) select count[] points starting at start[] with stride[]
java.lang.String	toString() Converts this object to a String representation.

Methods inherited from class visad.data.hdf5.hdf5objects.HDF5Object

getDescription, getID, getName, getShortName, getType, setID, setShortName, setType

Methods inherited from class java.lang.Object

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

Constructor Detail

HDF5Dataspace

public HDF5Dataspace()

Constructs an HDF5Dataspace

HDF5Dataspace

public HDF5Dataspace(int space_type)

Creates a new HDF5Dataspace

Parameters:

space_type - The type of dataspace to be created.

HDF5Dataspace

public HDF5Dataspace(int rank,
                     long[] dims,
                     long[] maxdims)

Creates a new HDF5Dataspace

Parameters:

rank - Number of dimensions of dataspace.

dims - An array of the size of each dimension.

maxdims - An array of the maximum size of each dimension.

Method Detail

init

public void init()
          throws ncsa.hdf.hdf5lib.exceptions.HDF5Exception

initialize the HDF5Dataspace:

1. open HDF5 library.
2. Set up data ranks and dimensions.
3. Set up start, stride and count.

Overrides:

init in class HDF5Object

Throws:

ncsa.hdf.hdf5lib.exceptions.HDF5Exception

select

public void select(long[] start,
                   long[] stride,
                   long[] count)
            throws ncsa.hdf.hdf5lib.exceptions.HDF5LibraryException,
                   java.lang.NullPointerException,
                   java.lang.IllegalArgumentException

select count[] points starting at start[] with stride[]

Parameters:

start - the starting points.

stride - the stride

count - the number of points.

Throws:

ncsa.hdf.hdf5lib.exceptions.HDF5LibraryException

java.lang.NullPointerException

java.lang.IllegalArgumentException

getRank

public int getRank()

Returns the rank of the dataspace

getDims

public long[] getDims()

Returns the dimensions of the dataspace

getMaxdims

public long[] getMaxdims()

Returns the maximum dimensions of the dataspace

getCount

public long[] getCount()

Returns the selected counts of the data

toString

public java.lang.String toString()

Converts this object to a String representation.

Overrides:

toString in class HDF5Object

Returns:

a string representation of this object