ucar.grib.grib2
Class Grib2ExtractRawData

java.lang.Object
  ucar.grib.grib2.Grib2ExtractRawData

public final class Grib2ExtractRawData
extends Object

A class that scans a GRIB2 file stream to extract product information. Either the first record of the Grib file is returned or all the records matching a certain parameter are return. The parameter is designated by it's Discipline number, Category number, and Parameter number.

Constructor Summary

Grib2ExtractRawData(RandomAccessFile raf)
Constructs a Grib2ExtractRawData object from a raf.

Method Summary

static void	main(String[] args) Outputs first record of raw data to STDOUT or parms based on discipline, category, and number
boolean	scan(int discipline, int category, int number, int forecast, long gOffset, long pOffset) scans the Grib2 file obtaining the first record or the data associated with a parameter

Methods inherited from class java.lang.Object

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

Constructor Detail

Grib2ExtractRawData

public Grib2ExtractRawData(RandomAccessFile raf)

Constructs a Grib2ExtractRawData object from a raf.

Parameters:

raf - with GRIB content

Method Detail

scan

public final boolean scan(int discipline,
                          int category,
                          int number,
                          int forecast,
                          long gOffset,
                          long pOffset)
                   throws IOException

scans the Grib2 file obtaining the first record or the data associated with a parameter

Parameters:

discipline, - parameter discipline number

category, - parameter category number

number, - parameter number

forecast - extract these times

Returns:

success in reading Grib file

Throws:

NotSupportedException - NotSupportedException

IOException - on data read

main

public static void main(String[] args)
                 throws IOException

Outputs first record of raw data to STDOUT or parms based on discipline, category, and number

Parameters:

args - filename

Throws:

IOException - on data reads