Package hec.heclib.grid

Class DataCompression

java.lang.Object

hec.heclib.grid.DataCompression

public class DataCompression
extends Object

Used to compress/uncompress Gridded Data

Field Summary

Fields

Modifier and Type	Field	Description
boolean	DEBUG

Constructor Summary

Constructors

Constructor	Description
DataCompression()

Method Summary

Modifier and Type	Method	Description
float	byteArrayToFloat(byte[] B)	Convert byte array (of size 4) to float
float[]	byteArrayToFloatArray(byte[] B)
int	compress(float[] arrayin, int sizein, float compressionScaleFactor, float compressionBase, short[] arrayout, int[] sizeout)	Method Description
byte[]	floatArrayToByteArray(float[] F)
byte[]	jCompress(byte[] uncompressedData)
byte[]	jUncompress(byte[] compressedData)
float	switchEndian(float x)
short	switchEndian(short x)
float[]	switchEndianArray(float[] X)
byte[]	switchEndianByteArray(byte[] B, int byteSize)
int	uncompress(short[] arrayin, int bytesin, double compressionScaleFactor, double compressionBase, float[] arrayout, int[] sizeout)	Method Description
int	zcompress(float[] arrayin, int sizein, shortArrayContainer arrayoutcontainer, int[] sizeout)	Method Description
float[]	zuncompress(short[] arrayin, int sizein, float[] arrayout, int sizeXY)	Method Description

Methods inherited from class java.lang.Object

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

Field Details

DEBUG

public boolean DEBUG

Constructor Details

DataCompression

public DataCompression()

Method Details

compress

public int compress(float[] arrayin,
 int sizein,
 float compressionScaleFactor,
 float compressionBase,
 short[] arrayout,
 int[] sizeout)

Method Description

Parameters:

arrayin - Description

sizein - Description

compressionScaleFactor - Description

compressionBase - Description

arrayout - Description

sizeout - Description

Returns:

Description

uncompress

public int uncompress(short[] arrayin,
 int bytesin,
 double compressionScaleFactor,
 double compressionBase,
 float[] arrayout,
 int[] sizeout)

Method Description

Parameters:

arrayin - Description

bytesin - Description

compressionScaleFactor - Description

compressionBase - Description

arrayout - Description

sizeout - Description

Returns:

Description

switchEndianByteArray

public byte[] switchEndianByteArray(byte[] B,
 int byteSize)

byteArrayToFloat

public float byteArrayToFloat(byte[] B)

Convert byte array (of size 4) to float

Parameters:

B -

Returns:

byteArrayToFloatArray

public float[] byteArrayToFloatArray(byte[] B)

floatArrayToByteArray

public byte[] floatArrayToByteArray(float[] F)

switchEndian

public float switchEndian(float x)

switchEndian

public short switchEndian(short x)

switchEndianArray

public float[] switchEndianArray(float[] X)

jCompress

public byte[] jCompress(byte[] uncompressedData)

jUncompress

public byte[] jUncompress(byte[] compressedData)

zcompress

public int zcompress(float[] arrayin,
 int sizein,
 shortArrayContainer arrayoutcontainer,
 int[] sizeout)

Method Description

Parameters:

arrayin - Description

sizein - Description

arrayoutcontainer - Description

sizeout - Description

Returns:

Description

zuncompress

public float[] zuncompress(short[] arrayin,
 int sizein,
 float[] arrayout,
 int sizeXY)

Method Description

Parameters:

arrayin - byte array from deflate, represented as shorts

sizein - number of bytes in deflated array

sizeXY -