ucar.nc2.dt.grid
Class GridDataset

java.lang.Object
  ucar.nc2.dt.grid.GridDataset

All Implemented Interfaces:

GridDataset, TypedDataset, FeatureDataset, FileCacheable

public class GridDataset
extends Object
implements GridDataset, FeatureDataset

Make a NetcdfDataset into a collection of GeoGrids with Georeferencing coordinate systems.

A variable will be made into a GeoGrid if it has a Georeferencing coordinate system, using GridCoordSys.isGridCoordSys(), and it has no extra dimensions, ie GridCoordSys.isComplete( var) is true. If it has multiple Georeferencing coordinate systems, any one that is a product set will be given preference.

Example:

 GridDataset gridDs = GridDataset.open (uriString);
 List grids = gridDs.getGrids();
 for (int i=0; i<grids.size(); i++) {
   GeoGrid grid = (Geogrid) grids.get(i);
 }
 

Author:

caron

Nested Class Summary

class

GridDataset.Gridset This is a set of GeoGrids with the same GeoCoordSys.

Field Summary

protected FileCache

fileCache

Constructor Summary

GridDataset(NetcdfDataset ds)
Create a GridDataset from a NetcdfDataset.

GridDataset(NetcdfDataset ds, Formatter parseInfo)
Create a GridDataset from a NetcdfDataset.

Method Summary

void	calcBounds() Caclulate date range and bounding box, even if the data has to be scanned.
void	close() Close all resources associated with this dataset.
static GridDataset	factory(String netcdfFileURI) Deprecated. : use GridDataset.open().
Attribute	findGlobalAttributeIgnoreCase(String name) Return the global attribute with the given name, ignoring case.
GeoGrid	findGridByName(String name) find the named GeoGrid.
GridDatatype	findGridDatatype(String name) find the named GridDatatype.
LatLonRect	getBoundingBox() The boundingBox for the entire dataset.
VariableSimpleIF	getDataVariable(String shortName) Get the named data Variable.
List<VariableSimpleIF>	getDataVariables() The data Variables available in this dataset.
DateRange	getDateRange() Date range for the entire dataset.
String	getDescription() Text information about this dataset.
String	getDetailInfo() Get Details about the dataset.
void	getDetailInfo(Formatter buff) Show debug / underlying implementation details
Date	getEndDate() Ending date for the entire dataset.
FeatureType	getFeatureType() Contains collections of this FeatureType.
List<Attribute>	getGlobalAttributes() List of global attributes.
List<GridDatatype>	getGrids() get the list of GridDatatype objects contained in this dataset.
List<GridDataset.Gridset>	getGridsets() Return GridDatatype objects grouped by GridCoordSys.
String	getImplementationName() Show who is implementing
String	getLocation() The URI location of the dataset
String	getLocationURI()
String	getName()
NetcdfDataset	getNetcdfDataset()
NetcdfFile	getNetcdfFile() Return underlying NetcdfFile, or null if none.
Date	getStartDate() Starting date for the entire dataset.
String	getTitle() Title of the dataset.
static void	main(String[] arg) testing
static GridDataset	open(String location) Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.
static GridDataset	open(String location, Set<NetcdfDataset.Enhance> enhanceMode) Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.
void	setFileCache(FileCache fileCache) If the FileCache is set, the FileCacheable object must store it and call FileCache.release() on FileCacheable.close():
boolean	sync() Sync() is called when the FileCacheable is found in the cache, before returning the object to the application.

Methods inherited from class java.lang.Object

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

Field Detail

fileCache

protected FileCache fileCache

Constructor Detail

GridDataset

public GridDataset(NetcdfDataset ds)
            throws IOException

Create a GridDataset from a NetcdfDataset.

Parameters:

ds - underlying NetcdfDataset, will do Enhance.CoordSystems if not already done.

Throws:

IOException - on read error

GridDataset

public GridDataset(NetcdfDataset ds,
                   Formatter parseInfo)
            throws IOException

Create a GridDataset from a NetcdfDataset.

Parameters:

ds - underlying NetcdfDataset, will do Enhance.CoordSystems if not already done.

parseInfo - put parse info here, may be null

Throws:

IOException - on read error

Method Detail

open

public static GridDataset open(String location)
                        throws IOException

Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.

Parameters:

location - netcdf dataset to open, using NetcdfDataset.acquireDataset().

Returns:

GridDataset

Throws:

IOException - on read error

See Also:

NetcdfDataset.acquireDataset(java.lang.String, ucar.nc2.util.CancelTask)

open

public static GridDataset open(String location,
                               Set<NetcdfDataset.Enhance> enhanceMode)
                        throws IOException

Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.

Parameters:

location - netcdf dataset to open, using NetcdfDataset.acquireDataset().

enhanceMode - open netcdf dataset with this enhanceMode

Returns:

GridDataset

Throws:

IOException - on read error

See Also:

NetcdfDataset.acquireDataset(java.lang.String, ucar.nc2.util.CancelTask)

getTitle

public String getTitle()

Description copied from interface: FeatureDataset

Title of the dataset.

Specified by:

getTitle in interface TypedDataset

Specified by:

getTitle in interface FeatureDataset

Returns:

Title of the dataset.

getDescription

public String getDescription()

Description copied from interface: FeatureDataset

Text information about this dataset.

Specified by:

getDescription in interface TypedDataset

Specified by:

getDescription in interface FeatureDataset

Returns:

Text information about this dataset.

getLocation

public String getLocation()

Description copied from interface: FeatureDataset

The URI location of the dataset

Specified by:

getLocation in interface FeatureDataset

Specified by:

getLocation in interface FileCacheable

Returns:

the URI location of the dataset, or null

getLocationURI

public String getLocationURI()

Specified by:

getLocationURI in interface TypedDataset

Returns:

The URI location of the dataset

getStartDate

public Date getStartDate()

Description copied from interface: FeatureDataset

Starting date for the entire dataset.

Specified by:

getStartDate in interface TypedDataset

Specified by:

getStartDate in interface FeatureDataset

Returns:

Start date for the entire dataset.

getEndDate

public Date getEndDate()

Description copied from interface: FeatureDataset

Ending date for the entire dataset.

Specified by:

getEndDate in interface TypedDataset

Specified by:

getEndDate in interface FeatureDataset

Returns:

End date for the entire dataset.

getBoundingBox

public LatLonRect getBoundingBox()

Description copied from interface: FeatureDataset

The boundingBox for the entire dataset.

Specified by:

getBoundingBox in interface TypedDataset

Specified by:

getBoundingBox in interface FeatureDataset

Returns:

the boundingBox for the entire dataset.

calcBounds

public void calcBounds()
                throws IOException

Description copied from interface: FeatureDataset

Caclulate date range and bounding box, even if the data has to be scanned. This ensures that getDateRange() and getBoundingBox() return non-null. If the collection already knows its date range and bounding box, then this has no effect.

Specified by:

calcBounds in interface FeatureDataset

Throws:

IOException - or read error.

getGlobalAttributes

public List<Attribute> getGlobalAttributes()

Description copied from interface: TypedDataset

List of global attributes.

Specified by:

getGlobalAttributes in interface TypedDataset

Specified by:

getGlobalAttributes in interface FeatureDataset

Returns:

List of type ucar.nc2.Attribute

findGlobalAttributeIgnoreCase

public Attribute findGlobalAttributeIgnoreCase(String name)

Description copied from interface: FeatureDataset

Return the global attribute with the given name, ignoring case.

Specified by:

findGlobalAttributeIgnoreCase in interface TypedDataset

Specified by:

findGlobalAttributeIgnoreCase in interface FeatureDataset

Parameters:

name - attribute name

Returns:

the global attribute with the given name, ingnoring case.

getDataVariables

public List<VariableSimpleIF> getDataVariables()

Description copied from interface: TypedDataset

The data Variables available in this dataset. Should just be data variable others might be searching for, not metadata or coordinate system variables, etc. The shape of this VariableSimpleIF does not necessarily match the

Specified by:

getDataVariables in interface TypedDataset

Specified by:

getDataVariables in interface FeatureDataset

Returns:

List of type VariableSimpleIF

getDataVariable

public VariableSimpleIF getDataVariable(String shortName)

Description copied from interface: TypedDataset

Get the named data Variable.

Specified by:

getDataVariable in interface TypedDataset

Specified by:

getDataVariable in interface FeatureDataset

Parameters:

shortName - of data Variable.

Returns:

VariableSimpleIF or null.

getNetcdfFile

public NetcdfFile getNetcdfFile()

Description copied from interface: FeatureDataset

Return underlying NetcdfFile, or null if none.

Specified by:

getNetcdfFile in interface TypedDataset

Specified by:

getNetcdfFile in interface FeatureDataset

Returns:

underlying NetcdfFile, or null if none.

getName

public String getName()

Returns:

the name of the dataset

getNetcdfDataset

public NetcdfDataset getNetcdfDataset()

Returns:

the underlying NetcdfDataset

getGrids

public List<GridDatatype> getGrids()

Description copied from interface: GridDataset

get the list of GridDatatype objects contained in this dataset.

Specified by:

getGrids in interface GridDataset

Returns:

the list of GeoGrid objects contained in this dataset.

findGridDatatype

public GridDatatype findGridDatatype(String name)

Description copied from interface: GridDataset

find the named GridDatatype.

Specified by:

findGridDatatype in interface GridDataset

Parameters:

name - look for this name

Returns:

the named GridDatatype, or null if not found

getGridsets

public List<GridDataset.Gridset> getGridsets()

Return GridDatatype objects grouped by GridCoordSys. All GridDatatype in a Gridset have the same GridCoordSystem.

Specified by:

getGridsets in interface GridDataset

Returns:

List of type ucar.nc2.dt.GridDataset.Gridset

findGridByName

public GeoGrid findGridByName(String name)

find the named GeoGrid.

Parameters:

name - find this GeoGrid by name

Returns:

the named GeoGrid, or null if not found

getDetailInfo

public String getDetailInfo()

Get Details about the dataset.

Specified by:

getDetailInfo in interface TypedDataset

Returns:

debug / underlying implementation details

getDetailInfo

public void getDetailInfo(Formatter buff)

Description copied from interface: FeatureDataset

Show debug / underlying implementation details

Specified by:

getDetailInfo in interface FeatureDataset

Parameters:

buff - append info here

getFeatureType

public FeatureType getFeatureType()

Description copied from interface: FeatureDataset

Contains collections of this FeatureType.

Specified by:

getFeatureType in interface FeatureDataset

Returns:

FeatureType of data

getDateRange

public DateRange getDateRange()

Description copied from interface: FeatureDataset

Date range for the entire dataset.

Specified by:

getDateRange in interface FeatureDataset

Returns:

the date range for the entire dataset, or null if unknown

getImplementationName

public String getImplementationName()

Description copied from interface: FeatureDataset

Show who is implementing

Specified by:

getImplementationName in interface FeatureDataset

Returns:

name of implementor

close

public void close()
           throws IOException

Description copied from interface: TypedDataset

Close all resources associated with this dataset.

Specified by:

close in interface TypedDataset

Specified by:

close in interface FeatureDataset

Specified by:

close in interface FileCacheable

Throws:

IOException

sync

public boolean sync()
             throws IOException

Description copied from interface: FileCacheable

Sync() is called when the FileCacheable is found in the cache, before returning the object to the application. FileCacheable has an opportunity to freshen itself. FileCacheable mag ignore this call.

Specified by:

sync in interface FileCacheable

Returns:

true if FileCacheable was changed

Throws:

IOException - on i/o error.

setFileCache

public void setFileCache(FileCache fileCache)

Description copied from interface: FileCacheable

If the FileCache is set, the FileCacheable object must store it and call FileCache.release() on FileCacheable.close():

  public synchronized void close() throws java.io.IOException {
    if (isClosed) return;
    if (cache != null) {
      cache.release(this);
    } else {
      reallyClose();
    }
    isClosed = true;
   

Specified by:

setFileCache in interface FileCacheable

Parameters:

fileCache - must store this, use it on close as above.

factory

public static GridDataset factory(String netcdfFileURI)
                           throws IOException

Deprecated. : use GridDataset.open().

Open a netcdf dataset, parse Conventions, find all the geoGrids, return a GridDataset.

Throws:

IOException

main

public static void main(String[] arg)

testing