org.iges.grads.server
Class GradsGridExtracter

java.lang.Object
  |
  +--org.iges.anagram.AbstractModule
        |
        +--org.iges.grads.server.GradsExtracter
              |
              +--org.iges.grads.server.GradsGridExtracter

All Implemented Interfaces:

Module

public class GradsGridExtracter

extends GradsExtracter

Extracts and caches metadata for a gridded GrADS dataset.

Field Summary

protected static java.text.DecimalFormat	doubleFormat
protected static double[]	timeIntervalFreq
protected static java.lang.String[]	timeIntervalNames

Fields inherited from class org.iges.grads.server.GradsExtracter

data, gradsInfo, metadata, storagePrefix, tasker

Fields inherited from class org.iges.anagram.AbstractModule

log, moduleName, parent, server

Constructor Summary

GradsGridExtracter()

Method Summary

protected java.lang.String	calcSpaceRes(java.lang.String dim, java.lang.String units) Helper for writeWebInfo()
protected java.lang.String	calcTimeRes() Helper for writeWebInfo()
protected double	convertGradsDateToCOARDS(java.lang.String dateString) Converts a GrADS date, a string with format yyyy:M:d:H or yyyy:M:d:H:m, to a udunits-compatible COARDS date, which is a floating point number in units of days since Jan 01, 0001.
protected void	load() Reads CTL file for dataset into internal structures
protected double[]	loadDimValues(java.lang.String dim, int size) Invokes GrADS to print a complete list of values for a given dimension, then parses the values into an array
protected void	printDim(java.io.PrintWriter info, java.lang.String dim, java.lang.String longName, java.lang.String units, java.lang.String resUnits, int size) Helper for writeWebInfo()
protected void	saveDimsForDirectSubset() Creates an in-memory object for use by the direct-subsetting feature, which reads directly from IEEE binary datafiles instead of invoking GrADS.
void	writeDAS() Takes the parsed metadata and writes a DAS file.
void	writeDDS() Takes the parsed metadata and writes a DAS
protected void	writeDim(java.lang.String dim) Writes an array of coordinate data to a temporary storage file for use by the subsetting modules
protected void	writeSubsetInfo() Caches any precalculated values for subsetting
void	writeWebSummary() Takes the parsed metadata and writes a ".info" page

Methods inherited from class org.iges.grads.server.GradsExtracter

configure, getHistoryString, getModuleID, loadMetadata, parse, printDODSAttributes

Methods inherited from class org.iges.anagram.AbstractModule

configModule, debug, debug, error, fail, fail, fail, getModuleName, info, init, toString, verbose, verbose

Methods inherited from class java.lang.Object

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

Field Detail

timeIntervalNames

protected static final java.lang.String[] timeIntervalNames

timeIntervalFreq

protected static final double[] timeIntervalFreq

doubleFormat

protected static final java.text.DecimalFormat doubleFormat

Constructor Detail

GradsGridExtracter

public GradsGridExtracter()

Method Detail

writeSubsetInfo

protected void writeSubsetInfo()
                        throws AnagramException

Description copied from class: GradsExtracter

Caches any precalculated values for subsetting

Specified by:

writeSubsetInfo in class GradsExtracter

AnagramException

load

protected void load()
             throws AnagramException

Description copied from class: GradsExtracter

Reads CTL file for dataset into internal structures

Specified by:

load in class GradsExtracter

AnagramException

loadDimValues

protected double[] loadDimValues(java.lang.String dim,
                                 int size)
                          throws AnagramException

Invokes GrADS to print a complete list of values for a given dimension, then parses the values into an array

Parameters:

dim - one of "lat, "lon", "lev", "time"

AnagramException

writeDim

protected void writeDim(java.lang.String dim)
                 throws AnagramException

Writes an array of coordinate data to a temporary storage file for use by the subsetting modules

Parameters:

dim - one of "lat, "lon", "lev", "time"

AnagramException

saveDimsForDirectSubset

protected void saveDimsForDirectSubset()

Creates an in-memory object for use by the direct-subsetting feature, which reads directly from IEEE binary datafiles instead of invoking GrADS. To make this possible it is necessary to save the dimension sizes, and an ordered list of variable names with the number of vertical levels for each variable, so that byte offsets can be calculated properly.

writeDAS

public void writeDAS()
              throws AnagramException

Description copied from class: GradsExtracter

Takes the parsed metadata and writes a DAS file.

Specified by:

writeDAS in class GradsExtracter

AnagramException

writeDDS

public void writeDDS()
              throws AnagramException

Description copied from class: GradsExtracter

Takes the parsed metadata and writes a DAS

Specified by:

writeDDS in class GradsExtracter

AnagramException

writeWebSummary

public void writeWebSummary()
                     throws AnagramException

Description copied from class: GradsExtracter

Takes the parsed metadata and writes a ".info" page

Specified by:

writeWebSummary in class GradsExtracter

AnagramException

printDim

protected void printDim(java.io.PrintWriter info,
                        java.lang.String dim,
                        java.lang.String longName,
                        java.lang.String units,
                        java.lang.String resUnits,
                        int size)

Helper for writeWebInfo()

calcSpaceRes

protected java.lang.String calcSpaceRes(java.lang.String dim,
                                        java.lang.String units)

Helper for writeWebInfo()

calcTimeRes

protected java.lang.String calcTimeRes()

Helper for writeWebInfo()

convertGradsDateToCOARDS

protected double convertGradsDateToCOARDS(java.lang.String dateString)

Converts a GrADS date, a string with format yyyy:M:d:H or yyyy:M:d:H:m, to a udunits-compatible COARDS date, which is a floating point number in units of days since Jan 01, 0001.