ucar.nc2.iosp.gempak
Class GempakGridReader

java.lang.Object
  ucar.nc2.iosp.gempak.GempakFileReader
      ucar.nc2.iosp.gempak.GempakGridReader

All Implemented Interfaces:

GempakConstants

public class GempakGridReader
extends GempakFileReader

Read a Gempak grid file

Version:

$Revision: 1.3 $

Author:

IDV Development Team

Nested Class Summary

Nested classes/interfaces inherited from class ucar.nc2.iosp.gempak.GempakFileReader

GempakFileReader.DMFileHeaderInfo, GempakFileReader.DMHeaders, GempakFileReader.DMKeys, GempakFileReader.DMLabel, GempakFileReader.DMParam, GempakFileReader.DMPart, GempakFileReader.Key

Field Summary

static java.lang.String	ANLB Grid analysis block identifier
static java.lang.String	GRID Grid identifier
static java.lang.String	NAVB Grid nav block identifier

Fields inherited from class ucar.nc2.iosp.gempak.GempakFileReader

dmLabel, fileHeaderInfo, fileSize, headers, keys, MTMACH, mvmst, needToSwap, parts, rf

Fields inherited from interface ucar.nc2.iosp.gempak.GempakConstants

COL, IMISSD, LLGDHD, LLNANL, LLNNAV, LLSTHL, MBLKSZ, MDCHAR, MDGDEC, MDGDIF, MDGGRB, MDGNMC, MDGNON, MDGRB2, MDGRID, MDINTG, MDREAL, MDRPCK, MFGD, MFSF, MFSN, MTALPH, MTAPOL, MTHP, MTIBM, MTIGPH, MTIRIS, MTLNUX, MTSUN, MTULTX, MTVAX, RDIFFD, RMISSD, ROW

Constructor Summary

GempakGridReader()
Bean ctor

GempakGridReader(RandomAccessFile raf)
Create a Gempak Grid Reader from the file

GempakGridReader(java.lang.String filename)
Create a Gempak Grid Reader from the file

Method Summary

GempakGridRecord	findGrid(java.lang.String parm) Find the first grid with this name
int	getGridCount() Get the grid count
GridIndex	getGridIndex() Get the grid index
java.util.List<GridRecord>	getGridList() Get list of grids
int	getGridPackingType(int gridNumber) Get the grid packing type
void	getNextByte() Get the next byte
protected boolean	init() Initialize this reader.
protected boolean	init(boolean fullCheck) Initialize this reader.
static void	main(java.lang.String[] args) Run the program
void	printAnalBlock() Print out the analysis block so it looks something like this:
void	printGrids() Print out the grids.
void	printNavBlock() Print out the navibation block so it looks something like this:
float[]	readGrid(GridRecord gr) Get the grid packing type
void	showGridInfo(boolean printGrids) List out the grid information (aka GDINFO)

Methods inherited from class ucar.nc2.iosp.gempak.GempakFileReader

DM_RFLT, DM_RFLT, DM_RFLT, DM_RINT, DM_RINT, DM_RINT, DM_RSTR, DM_RSTR, findFileHeader, findKey, getByteOrder, getByteOrder, getDataPointer, getFileHeader, getFilename, getInitFileSize, getOffset, getPart, getPartNumber, init, logError, printFileLabel, printHeaders, printKeys, printParts, readFileHeaderInfo, readHeaders, readKeys, readParts

Methods inherited from class java.lang.Object

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

Field Detail

GRID

public static final java.lang.String GRID

Grid identifier

See Also:

Constant Field Values

ANLB

public static final java.lang.String ANLB

Grid analysis block identifier

See Also:

Constant Field Values

NAVB

public static final java.lang.String NAVB

Grid nav block identifier

See Also:

Constant Field Values

Constructor Detail

GempakGridReader

public GempakGridReader()

Bean ctor

GempakGridReader

public GempakGridReader(java.lang.String filename)
                 throws java.io.IOException

Create a Gempak Grid Reader from the file

Parameters:

filename - filename

Throws:

java.io.IOException - problem reading file

GempakGridReader

public GempakGridReader(RandomAccessFile raf)
                 throws java.io.IOException

Create a Gempak Grid Reader from the file

Parameters:

raf - RandomAccessFile

Throws:

java.io.IOException - problem reading file

Method Detail

init

protected boolean init()
                throws java.io.IOException

Initialize this reader. Read all the metadata

Returns:

true if successful

Throws:

java.io.IOException - problem reading the data

init

protected boolean init(boolean fullCheck)
                throws java.io.IOException

Initialize this reader. Get the Grid specific info

Overrides:

init in class GempakFileReader

Parameters:

fullCheck - check to make sure there are grids we can handle

Returns:

true if successful

Throws:

java.io.IOException - problem reading the data

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Run the program

Parameters:

args - [0] filename (required), [1] variable name (X for default), [2] X to not list grids

Throws:

java.io.IOException - problem reading the file

getGridIndex

public GridIndex getGridIndex()

Get the grid index

Returns:

the GridIndex

getGridCount

public int getGridCount()

Get the grid count

Returns:

the count

getGridPackingType

public int getGridPackingType(int gridNumber)
                       throws java.io.IOException

Get the grid packing type

Parameters:

gridNumber - grid number

Returns:

packing type or error number

Throws:

java.io.IOException - problem reading file

findGrid

public GempakGridRecord findGrid(java.lang.String parm)

Find the first grid with this name

Parameters:

parm - name of grid

Returns:

the grid header or null

readGrid

public float[] readGrid(GridRecord gr)
                 throws java.io.IOException

Get the grid packing type

Parameters:

gr - grid record

Returns:

packing type or error number

Throws:

java.io.IOException - problem reading file

printNavBlock

public void printNavBlock()

Print out the navibation block so it looks something like this:

   GRID NAVIGATION:
        PROJECTION:          LCC
        ANGLES:              25.0   -95.0    25.0
        GRID SIZE:           93  65
        LL CORNER:           12.19   -133.46
        UR CORNER:           57.29    -49.38
 

printAnalBlock

public void printAnalBlock()

Print out the analysis block so it looks something like this:

getGridList

public java.util.List<GridRecord> getGridList()

Get list of grids

Returns:

list of grids

printGrids

public void printGrids()

Print out the grids.

showGridInfo

public void showGridInfo(boolean printGrids)

List out the grid information (aka GDINFO)

Parameters:

printGrids - print each grid record

getNextByte

public void getNextByte()
                 throws java.io.IOException

Get the next byte

Throws:

java.io.IOException - problem reading the byte