Package noaa.coastwatch.util.chunk

Class CompositeMapApplicationFunction

java.lang.Object

noaa.coastwatch.util.chunk.CompositeMapApplicationFunction

All Implemented Interfaces:

ChunkFunction

public class CompositeMapApplicationFunction
extends Object
implements ChunkFunction

The CompositeMapApplicationFunction class applies the integer composite map created by the CompositeMapFunction class to a list of chunks representing a time series or spatial series of partially overlapping data.

Input data chunks to this function should be combined into a list as follows:

• Short integer chunk first with map index data
• Variable data chunks

Since:

3.8.1

Author:

Peter Hollemans

Constructor Summary

Constructors

Constructor	Description
CompositeMapApplicationFunction(int chunkCount, DataChunk protoChunk)	Creates a new integer composite map application function.

Method Summary

Modifier and Type	Method	Description
DataChunk	apply(ChunkPosition pos, List<DataChunk> inputChunks)	Applies some function to a list of chunks.
long	getMemory(ChunkPosition pos, int chunks)	Estimates the memory requirements for processing a chunk of data at the specified position, not including the input and output chunk internal data arrays.
static void	main(String[] argv)	Tests this class.

Methods inherited from class java.lang.Object

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

Constructor Details

CompositeMapApplicationFunction

public CompositeMapApplicationFunction(int chunkCount,
 DataChunk protoChunk)

Creates a new integer composite map application function.

Parameters:

chunkCount - the number of chunks that are being composited together.

protoChunk - the prototype chunk for the function result. The chunk returned by the apply(noaa.coastwatch.util.chunk.ChunkPosition, java.util.List<noaa.coastwatch.util.chunk.DataChunk>) method will be compatible with the prototype.

Method Details

getMemory

public long getMemory(ChunkPosition pos,
 int chunks)

Description copied from interface: ChunkFunction

Estimates the memory requirements for processing a chunk of data at the specified position, not including the input and output chunk internal data arrays.

Specified by:

getMemory in interface ChunkFunction

Parameters:

pos - the position to estimate the memory usage.

chunks - the number of input chunks that will be processed at once.

Returns:

the memory in bytes.

apply

public DataChunk apply(ChunkPosition pos,
 List<DataChunk> inputChunks)

Description copied from interface: ChunkFunction

Applies some function to a list of chunks.

Specified by:

apply in interface ChunkFunction

Parameters:

pos - the position to perform the function.

inputChunks - the list of chunks as input to the function.

Returns:

the output chunk of the function, or null if no valid output chunk could be computed.

main

public static void main(String[] argv)
                 throws Exception

Tests this class.

Parameters:

argv - the array of command line parameters.

Throws:

Exception