java.lang.Object
- nom.tam.fits.Data
- - nom.tam.fits.AbstractTableData
  - - nom.tam.fits.BinaryTable
    - - nom.tam.image.compression.hdu.CompressedImageData

All Implemented Interfaces:: FitsElement, TableData

public class CompressedImageData
extends BinaryTable

Nested Class Summary
- Nested classes/interfaces inherited from class nom.tam.fits.BinaryTable
  BinaryTable.ColumnDesc, BinaryTable.SaveState

Field Summary
- Fields inherited from class nom.tam.fits.Data
  dataSize, fileOffset, input

Constructor Summary

Constructors
Modifier Constructor Description

protected CompressedImageData()

protected CompressedImageData(Header hdr)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`compress(CompressedImageHDU hdu)`
`void`	`fillHeader(Header h)`	Update a FITS header to reflect the current state of the data.
`protected void`	`forceNoLoss(int x, int y, int width, int heigth)`
`protected <T extends ICompressOption> T`	`getCompressOption(java.lang.Class<T> clazz)`
`protected java.nio.Buffer`	`getUncompressedData(Header hdr)`
`protected void`	`prepareUncompressedData(java.lang.Object data, Header header)`
`protected void`	`preserveNulls(long nullValue, java.lang.String compressionAlgorithm)`	preserve the null values in the image even if the compression algorithm is lossy.
`protected CompressedImageData`	`setAxis(int[] axes)`
`protected void`	`setCompressAlgorithm(HeaderCard compressAlgorithmCard)`
`protected void`	`setQuantAlgorithm(HeaderCard quantAlgorithmCard)`
`protected CompressedImageData`	`setTileSize(int... axes)`

Methods inherited from class nom.tam.fits.BinaryTable
addByteVaryingColumn, addColumn, addFlattenedColumn, addRow, createColumnDataFor, createColumnTable, deleteColumns, deleteRows, getBases, getColumn, getData, getDimens, getElement, getFlatColumns, getFlattenedColumn, getHeapOffset, getHeapSize, getModelRow, getNCols, getNRows, getRawElement, getRow, getSizes, getTDims, getTrueSize, getTypes, read, readHeap, readTrueData, setColumn, setElement, setFlattenedColumn, setRow, updateAfterDelete, validColumn, validRow, write

Methods inherited from class nom.tam.fits.Data
getFileOffset, getKernel, getSize, reset, rewrite, rewriteable, setFileOffset

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompressedImageData
```
protected CompressedImageData()
```

CompressedImageData

protected CompressedImageData(Header hdr)
                       throws FitsException

Throws:: FitsException

Method Detail

fillHeader
```
public void fillHeader(Header h)
                throws FitsException
```
Description copied from class: BinaryTable

Update a FITS header to reflect the current state of the data. * @throws FitsException if the operation failed

Overrides:

fillHeader in class BinaryTable

Throws:

FitsException

compress

protected void compress(CompressedImageHDU hdu)
                 throws FitsException

Throws:: FitsException

forceNoLoss

protected void forceNoLoss(int x,
                           int y,
                           int width,
                           int heigth)

getCompressOption

protected <T extends ICompressOption> T getCompressOption(java.lang.Class<T> clazz)

getUncompressedData

protected java.nio.Buffer getUncompressedData(Header hdr)
                                       throws FitsException

Throws:: FitsException

prepareUncompressedData

protected void prepareUncompressedData(java.lang.Object data,
                                       Header header)
                                throws FitsException

Throws:: FitsException

preserveNulls
```
protected void preserveNulls(long nullValue,
                             java.lang.String compressionAlgorithm)
```
preserve the null values in the image even if the compression algorithm is lossy.

Parameters:

nullValue - the value representing null for byte/short and integer pixel values

compressionAlgorithm - compression algorithm to use for the null pixel mask

setAxis

protected CompressedImageData setAxis(int[] axes)

setCompressAlgorithm

protected void setCompressAlgorithm(HeaderCard compressAlgorithmCard)

setQuantAlgorithm

protected void setQuantAlgorithm(HeaderCard quantAlgorithmCard)
                          throws FitsException

Throws:: FitsException

setTileSize

protected CompressedImageData setTileSize(int... axes)
                                   throws FitsException

Throws:: FitsException

Modifier	Constructor	Description
`protected`	`CompressedImageData()`
`protected`	`CompressedImageData(Header hdr)`

Class CompressedImageData

Nested Class Summary

Nested classes/interfaces inherited from class nom.tam.fits.BinaryTable

Field Summary

Fields inherited from class nom.tam.fits.Data

Constructor Summary

Method Summary

Methods inherited from class nom.tam.fits.BinaryTable

Methods inherited from class nom.tam.fits.Data

Methods inherited from class java.lang.Object

Constructor Detail

CompressedImageData

CompressedImageData

Method Detail

fillHeader

compress

forceNoLoss

getCompressOption

getUncompressedData

prepareUncompressedData

preserveNulls

setAxis

setCompressAlgorithm

setQuantAlgorithm

setTileSize