astro.fits

Class TableTools

java.lang.Object

astro.fits.TableTools

public class TableTools
extends Object

A class to simplify fits binary table handling.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TableTools.Ascii Read the binary table and prints the columns to standard out.
static class	TableTools.CorotChrom Corot reader for chromatic channel.
static class	TableTools.CorotImg Corot reader for imagette channel.
static class	TableTools.MPrint Read the provided fits file to first table and print out table info.
static class	TableTools.Print Read the provided fits file to first table and print out table info.
static class	TableTools.RiceTest

Field Summary

Fields

Modifier and Type	Field and Description
private static int	BYTEBIT
static Map<String,Class<?>>	TYPES A llokup-table for binary data types to java data classes.

Constructor Summary

Constructors

Constructor and Description
TableTools()

Method Summary

Modifier and Type	Method and Description
static MImageHDU	decompress(MTableHDU rice) First trial of rice decompression, if successful moved to mfits package.
static Class<?>	deduceClass(String type) From the value of a TFORM header entry, we deduce the java class type of the column.
static Map<String,Class<?>>	parseHeader(MTableHDU tab) We read a table header and return the meta information on the data format as a mapping of column names to java class types.
private static void	putPixel(long bitmask, int bytepix, ByteBuffer into)
private static ByteBuffer	riceDecompressInto(ByteBuffer tile, int block, int bytepix, int maxbits, ByteBuffer into, int npix)

Methods inherited from class java.lang.Object

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

Field Detail

BYTEBIT

private static final int BYTEBIT

See Also:

Constant Field Values

TYPES

public static final Map<String,Class<?>> TYPES

A llokup-table for binary data types to java data classes.

Constructor Detail

TableTools

public TableTools()

Method Detail

deduceClass

public static Class<?> deduceClass(String type)

From the value of a TFORM header entry, we deduce the java class type of the column. Arrays are described by their parental class (e.g TFORM='25E' would return Float rather than Float[]). Complex numbers are always represented as a double pair, while array pointers are returned as Long. Bits are returned as Booleans.

Returns:

null if an unknown type is encountered.

parseHeader

public static Map<String,Class<?>> parseHeader(MTableHDU tab)

We read a table header and return the meta information on the data format as a mapping of column names to java class types. Arrays are described by their parental class (e.g TFORM='25E' would return Float rather than Float[]). Complex numbers are always represented as a double pair, while array pointers are returned as Long. Bits are returned as Booleans.

decompress

public static MImageHDU decompress(MTableHDU rice)

First trial of rice decompression, if successful moved to mfits package.

Parameters:

rice -

Returns:

putPixel

private static void putPixel(long bitmask,
                             int bytepix,
                             ByteBuffer into)

riceDecompressInto

private static ByteBuffer riceDecompressInto(ByteBuffer tile,
                                             int block,
                                             int bytepix,
                                             int maxbits,
                                             ByteBuffer into,
                                             int npix)