Package noaa.coastwatch.io

Class NOAA1bCachedGrid

java.lang.Object

noaa.coastwatch.util.MetadataContainer

noaa.coastwatch.util.DataVariable

noaa.coastwatch.util.Grid

noaa.coastwatch.io.CachedGrid

noaa.coastwatch.io.NOAA1bCachedGrid

All Implemented Interfaces:

Cloneable, ValueSource

public class NOAA1bCachedGrid
extends CachedGrid

The NOAA1b cached grid class is a cached grid that understands how to read variable data from NOAA1b files.

Since:

3.1.3

Author:

Peter Hollemans

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_CACHE_SIZE	Default cache size in bytes.

Fields inherited from class noaa.coastwatch.io.CachedGrid

accessMode, DEFAULT_MAX_TILES, DEFAULT_TILE_DIMS, READ_ONLY, READ_WRITE, tiling

Fields inherited from class noaa.coastwatch.util.Grid

COL, COLS, ROW, ROWS

Fields inherited from class noaa.coastwatch.util.DataVariable

data, dims, isUnsigned, lookup, unsignedType

Constructor Summary

Constructors

Constructor	Description
NOAA1bCachedGrid(Grid grid, NOAA1bReader reader)	Constructs a new read-only NOAA1b cached grid with the specified properties.

Method Summary

Modifier and Type	Method	Description
Class	getDataClass()	Gets the class associated with components of the data array.
Object	getDataStream()	Gets the cache data stream as an object.
protected TilingScheme.Tile	readTile(TilingScheme.TilePosition pos)	Reads the specified tile.
protected void	writeTile(TilingScheme.Tile tile)	Writes the specified tile.

Methods inherited from class noaa.coastwatch.io.CachedGrid

clearCache, flush, getCoveringPositions, getData, getData, getMaxTiles, getTileDims, getTileSize, getTilingScheme, getValue, getValue, main, resetCache, setCacheSize, setData, setData, setMaxTiles, setOptimizedCacheSize, setTileDims, setTileSize, setValue, setValue

Methods inherited from class noaa.coastwatch.util.Grid

arraycopy, checkSubset, getNavigation, getSubset, getValue, interpolate, navigate, setNavigation, setValue

Methods inherited from class noaa.coastwatch.util.DataVariable

convertUnits, dispose, format, format, format, getClassBits, getDecimals, getDimensions, getFormat, getLongName, getMissing, getName, getOptimalStride, getRank, getScaling, getStatistics, getStatistics, getStatistics, getStatistics, getUnits, getUnsigned, getValue, getValues, setAccessHint, setFormat, setLongName, setLookup, setMissing, setName, setUnits, setUnsigned, setValue, toString

Methods inherited from class noaa.coastwatch.util.MetadataContainer

clone, getMetadataMap

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_CACHE_SIZE

public static final int DEFAULT_CACHE_SIZE

Default cache size in bytes.

See Also:

• Constant Field Values

Constructor Details

NOAA1bCachedGrid

public NOAA1bCachedGrid(Grid grid,
 NOAA1bReader reader)
                 throws IOException

Constructs a new read-only NOAA1b cached grid with the specified properties.

Parameters:

grid - the grid to use for attributes.

reader - the HDF reader data source.

Throws:

IOException - if a problem occurred accessing the NOAA1b file.

Method Details

getDataClass

public Class getDataClass()

Description copied from class: DataVariable

Gets the class associated with components of the data array.

Overrides:

getDataClass in class DataVariable

Returns:

the data class or null if the data array is null.

getDataStream

public Object getDataStream()

Description copied from class: CachedGrid

Gets the cache data stream as an object. This is useful for classes that read and write cached grids.

Specified by:

getDataStream in class CachedGrid

Returns:

the data stream used for reading and writing data.

readTile

protected TilingScheme.Tile readTile(TilingScheme.TilePosition pos)
                              throws IOException

Description copied from class: CachedGrid

Reads the specified tile.

Specified by:

readTile in class CachedGrid

Parameters:

pos - the tile position to read.

Returns:

the tile at the specified position.

Throws:

IOException - if an error occurred reading the tile data.

writeTile

protected void writeTile(TilingScheme.Tile tile)
                  throws IOException

Description copied from class: CachedGrid

Writes the specified tile. The implementation of this method must set the tile to be not dirty upon successfully writing it, or throw an error.

Specified by:

writeTile in class CachedGrid

Parameters:

tile - the tile to write.

Throws:

IOException - if an error occurred writing the tile data.