AbstractGridFormat (Geotools modules 21.0 API)

Object
- AbstractGridFormat

All Implemented Interfaces:

Format

Direct Known Subclasses:

ArcGridFormat, ArcSDERasterFormat, BaseGDALGridFormat, GeoPackageFormat, GeoTiffFormat, GrassCoverageFormat, ImageMosaicFormat, ImageMosaicJDBCFormat, ImagePyramidFormat, JP2KFormat, MBTilesFormat, NetCDFFormat, UnknownFormat, WorldImageFormat
```
public abstract class AbstractGridFormat
extends Object
implements Format
```
AbstractGridFormat is a convenience class so subclasses only need to populate a Map class and set the read and write parameter fields.
For example the ArcGridFormat has the following method which sets up all the required information: private void setInfo(){ HashMap info=new HashMap(); info.put("name", "ArcGrid"); info.put("description", "Arc Grid Coverage Format"); info.put("vendor", "Geotools"); info.put("docURL", "http://gdal.velocet.ca/projects/aigrid/index.html"); info.put("version", "1.0"); mInfo=info; readParameters=new GeneralParameterDescriptor[2]; readParameters[0]=ArcGridOperationParameter.getGRASSReadParam(); readParameters[0]=ArcGridOperationParameter.getCompressReadParam(); writeParameters=new GeneralParameterDescriptor[2]; writeParameters[0]=ArcGridOperationParameter.getGRASSWriteParam(); writeParameters[0]=ArcGridOperationParameter.getCompressWriteParam(); }

Author:

jeichar, Simone Giannecchini, GeoSolutions

Field Summary

Fields
Modifier and Type	Field and Description
`static ParameterDescriptor<Color>`	`BACKGROUND_COLOR` Control the background color to be used where the input was transparent
`static DefaultParameterDescriptor<int[]>`	`BANDS` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader#read(GeneralParameterValue[])` method to specify the band indices of the input grid coverage that are going to be in the resulting coverage.
`static ParameterDescriptor<DecimationPolicy>`	`DECIMATION_POLICY` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader#read(GeneralParameterValue[])` method in order to specify the policy a reader should adopt when setting read parameters when evaluating a needed resolution.
`static ParameterDescriptor<List>`	`ELEVATION` Optional Elevation value for this mosaic.
`static ParameterDescriptor<String>`	`FOOTPRINT_BEHAVIOR` Control the footprint management.
`static DefaultParameterDescriptor<GeoToolsWriteParams>`	`GEOTOOLS_WRITE_PARAMS` This `GeneralParameterValue` can be provided to the `GridCoverageWriter`s through the `GridCoverageWriter#write(org.opengis.coverage.grid.GridCoverage, GeneralParameterValue[])` method in order to control the writing process in terms of compression, tiling, etc.GridGeometry2D
`static ParameterDescriptor<Color>`	`INPUT_TRANSPARENT_COLOR` Control the transparency of the input coverages.
`static ParameterDescriptor<Interpolation>`	`INTERPOLATION` Control the interpolation to be used in the eventual image processing done while reading data
`protected Map<String,String>`	`mInfo` The Map object is used by the information methods(such as getName()) as a data source.
`static DefaultParameterDescriptor<OverviewPolicy>`	`OVERVIEW_POLICY` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader#read(GeneralParameterValue[])` method in order to specify the policy a reader should adopt when choosing the right overview during a read operation.
`static DefaultParameterDescriptor<ProgressListener>`	`PROGRESS_LISTENER` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader#write(GeneralParameterValue[])` method in order to monitor a writing process
`static DefaultParameterDescriptor<GridGeometry2D>`	`READ_GRIDGEOMETRY2D` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader#read(GeneralParameterValue[])` method in order to pick up the best matching resolution level and (soon) the best matching area.
`protected ParameterValueGroup`	`readParameters` `ParameterValueGroup` that controls the reading process for a `GridCoverageReader` through the `GridCoverageReader.read(org.opengis.parameter.GeneralParameterValue[])` method.
`static DefaultParameterDescriptor<String>`	`SUGGESTED_TILE_SIZE` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader#read(GeneralParameterValue[])` method in order to specify the suggested size of tiles to avoid long time reading occurring with JAI ImageRead on striped images.
`static String`	`TILE_SIZE_SEPARATOR`
`static ParameterDescriptor<List>`	`TIME` Optional Time value for this mosaic.
`static DefaultParameterDescriptor<Boolean>`	`USE_JAI_IMAGEREAD` This `GeneralParameterValue` can be provided to the `GridCoverageReader`s through the `GridCoverageReader.read(GeneralParameterValue[])` method in order to specify the type of image read operation requested: using a JAI ImageRead operation (leveraging on Deferred Execution Model, Tile Caching,...), or the direct `ImageReader`'s read methods.
`protected ParameterValueGroup`	`writeParameters` `ParameterValueGroup` that controls the writing process for a `GridCoverageWriter` through the `GridCoverageWriter.write(org.opengis.coverage.grid.GridCoverage, org.opengis.parameter.GeneralParameterValue[])` method.

Constructor Summary

Constructors
Constructor and Description

AbstractGridFormat()

Constructors
Constructor and Description
`AbstractGridFormat()`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`accepts(Object source)` Tells me if this `Format` can read the provided `input`.
`abstract boolean`	`accepts(Object source, Hints hints)` Tells me if this `Format` can read the provided `input`.
`boolean`	`equals(Format f)`
`static CoordinateReferenceSystem`	`getDefaultCRS()` getDefaultCRS This method provides the user with a default crs WGS84
`abstract GeoToolsWriteParams`	`getDefaultImageIOWriteParameters()` Returns an instance of `ImageWriteParam` that can be used to control a subsequent `GridCoverageWriter.write(org.opengis.coverage.grid.GridCoverage, org.opengis.parameter.GeneralParameterValue[])`; Be careful with using the `ImageWriteParam` since their usage is still experimental.
`String`	`getDescription()` Description of the file format.
`String`	`getDocURL()` Documentation URL for the format.
`String`	`getName()` Name of the file format.
`abstract AbstractGridCoverage2DReader`	`getReader(Object source)` Gets a `GridCoverageReader` for this format able to create coverages out of the `source` object.
`abstract AbstractGridCoverage2DReader`	`getReader(Object source, Hints hints)` Gets a `GridCoverageReader` for this format able to create coverages out of the `source` object using the provided `hints`.
`ParameterValueGroup`	`getReadParameters()` Retrieve the parameter information for a `read` operation.
`String`	`getVendor()` Vendor or agency for the format.
`String`	`getVersion()` Version number of the format.
`ParameterValueGroup`	`getWriteParameters()` Retrieve the parameter information for a `write` operation.
`abstract GridCoverageWriter`	`getWriter(Object destination)` Retrieves a `GridCoverageWriter` suitable for writing to the provided `destination` with this format.
`abstract GridCoverageWriter`	`getWriter(Object destination, Hints hints)` Call the accepts() method before asking for a writer to determine if the current object is supported.

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - mInfo
```
protected Map<String,String> mInfo
```
    The Map object is used by the information methods(such as getName()) as a data source. The keys in the Map object (for the associated method) are as follows: getName() key = "name" value type=String getDescription() key = "description" value type=String getVendor() key = "vendor" value type=String getDocURL() key = "docURL" value type=String getVersion() key = "version" value type=String Naturally, any methods that are overridden need not have an entry in the Map
  - readParameters
```
protected ParameterValueGroup readParameters
```
    ParameterValueGroup that controls the reading process for a GridCoverageReader through the GridCoverageReader.read(org.opengis.parameter.GeneralParameterValue[]) method.
  - writeParameters
```
protected ParameterValueGroup writeParameters
```
    ParameterValueGroup that controls the writing process for a GridCoverageWriter through the GridCoverageWriter.write(org.opengis.coverage.grid.GridCoverage, org.opengis.parameter.GeneralParameterValue[]) method.
  - READ_GRIDGEOMETRY2D
```
public static final DefaultParameterDescriptor<GridGeometry2D> READ_GRIDGEOMETRY2D
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader#read(GeneralParameterValue[]) method in order to pick up the best matching resolution level and (soon) the best matching area.
  - PROGRESS_LISTENER
```
public static final DefaultParameterDescriptor<ProgressListener> PROGRESS_LISTENER
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader#write(GeneralParameterValue[]) method in order to monitor a writing process
  - GEOTOOLS_WRITE_PARAMS
```
public static final DefaultParameterDescriptor<GeoToolsWriteParams> GEOTOOLS_WRITE_PARAMS
```
    This GeneralParameterValue can be provided to the GridCoverageWriters through the GridCoverageWriter#write(org.opengis.coverage.grid.GridCoverage, GeneralParameterValue[]) method in order to control the writing process in terms of compression, tiling, etc.GridGeometry2D
  - USE_JAI_IMAGEREAD
```
public static final DefaultParameterDescriptor<Boolean> USE_JAI_IMAGEREAD
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader.read(GeneralParameterValue[]) method in order to specify the type of image read operation requested: using a JAI ImageRead operation (leveraging on Deferred Execution Model, Tile Caching,...), or the direct ImageReader's read methods.
  - OVERVIEW_POLICY
```
public static final DefaultParameterDescriptor<OverviewPolicy> OVERVIEW_POLICY
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader#read(GeneralParameterValue[]) method in order to specify the policy a reader should adopt when choosing the right overview during a read operation.
  - DECIMATION_POLICY
```
public static final ParameterDescriptor<DecimationPolicy> DECIMATION_POLICY
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader#read(GeneralParameterValue[]) method in order to specify the policy a reader should adopt when setting read parameters when evaluating a needed resolution.
  - SUGGESTED_TILE_SIZE
```
public static final DefaultParameterDescriptor<String> SUGGESTED_TILE_SIZE
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader#read(GeneralParameterValue[]) method in order to specify the suggested size of tiles to avoid long time reading occurring with JAI ImageRead on striped images. (Images with tiles Nx1) Value should be a String in the form of "W,H" (without quotes) where W is a number representing the suggested tileWidth and H is a number representing the suggested tileHeight.
  - BANDS
```
public static final DefaultParameterDescriptor<int[]> BANDS
```
    This GeneralParameterValue can be provided to the GridCoverageReaders through the GridCoverageReader#read(GeneralParameterValue[]) method to specify the band indices of the input grid coverage that are going to be in the resulting coverage. The order of the bands on the output coverage is the order of the indices in the parameter. Value should be an integer array (int[]) containing the band indices in the desired order. Duplicate or multiple appearances of the same band index are allowed.
  - TILE_SIZE_SEPARATOR
```
public static final String TILE_SIZE_SEPARATOR
```
    See Also:
    
    Constant Field Values
  - INPUT_TRANSPARENT_COLOR
```
public static final ParameterDescriptor<Color> INPUT_TRANSPARENT_COLOR
```
    Control the transparency of the input coverages.
  - BACKGROUND_COLOR
```
public static final ParameterDescriptor<Color> BACKGROUND_COLOR
```
    Control the background color to be used where the input was transparent
  - TIME
```
public static final ParameterDescriptor<List> TIME
```
    Optional Time value for this mosaic.
  - ELEVATION
```
public static final ParameterDescriptor<List> ELEVATION
```
    Optional Elevation value for this mosaic.
  - INTERPOLATION
```
public static final ParameterDescriptor<Interpolation> INTERPOLATION
```
    Control the interpolation to be used in the eventual image processing done while reading data
  - FOOTPRINT_BEHAVIOR
```
public static final ParameterDescriptor<String> FOOTPRINT_BEHAVIOR
```
    Control the footprint management.
- Constructor Detail
  - AbstractGridFormat
```
public AbstractGridFormat()
```
- Method Detail
  - getName
```
public String getName()
```
    Description copied from interface: Format
    
    Name of the file format.
    
    Specified by:
    
    getName in interface Format
    
    See Also:
    
    Format.getName()
  - getDescription
```
public String getDescription()
```
    Description copied from interface: Format
    
    Description of the file format. If no description, the value will be null.
    
    Specified by:
    
    getDescription in interface Format
    
    See Also:
    
    Format.getDescription()
  - getVendor
```
public String getVendor()
```
    Description copied from interface: Format
    
    Vendor or agency for the format.
    
    Specified by:
    
    getVendor in interface Format
    
    See Also:
    
    Format.getVendor()
  - getDocURL
```
public String getDocURL()
```
    Description copied from interface: Format
    
    Documentation URL for the format.
    
    Specified by:
    
    getDocURL in interface Format
    
    See Also:
    
    Format.getDocURL()
  - getVersion
```
public String getVersion()
```
    Description copied from interface: Format
    
    Version number of the format.
    
    Specified by:
    
    getVersion in interface Format
    
    See Also:
    
    Format.getVersion()
  - getReader
```
public abstract AbstractGridCoverage2DReader getReader(Object source)
```
    Gets a GridCoverageReader for this format able to create coverages out of the source object.
    In case this Format cannot reader the provided source object null is returned.
    
    Parameters:
    
    source - The source object to parse.
    
    Returns:
    
    A reader for this Format or null.
  - getReader
```
public abstract AbstractGridCoverage2DReader getReader(Object source,
                                                       Hints hints)
```
    Gets a GridCoverageReader for this format able to create coverages out of the source object using the provided hints.
    In case this Format cannot reader the provided source object null is returned.
    
    Parameters:
    
    source - The source object to parse. *
    
    hints - The Hints to use when trying to instantiate this reader.
    
    Returns:
    
    A reader for this Format or null.
  - getWriter
```
public abstract GridCoverageWriter getWriter(Object destination)
```
    Retrieves a GridCoverageWriter suitable for writing to the provided destination with this format.
    In case no writers are available null is returned.
    
    Parameters:
    
    destination - The destinatin where to write.
    
    Returns:
    
    A GridCoverageWriter suitable for writing to the provided destination with this format.
  - accepts
```
public boolean accepts(Object source)
```
    Tells me if this Format can read the provided input.
    
    Parameters:
    
    input - The input object to test for suitability.
    
    Returns:
    
    True if this format can read this object, False otherwise.
  - accepts
```
public abstract boolean accepts(Object source,
                                Hints hints)
```
    Tells me if this Format can read the provided input.
    
    Parameters:
    
    input - The input object to test for suitability.
    
    hints - Hints to control the accepts internal machinery.
    
    Returns:
    
    True if this format can read this object, False otherwise.
  - equals
```
public boolean equals(Format f)
```
    See Also:
    
    org.geotools.data.coverage.grid.Format#equals(org.geotools.data.coverage.grid.Format)
  - getReadParameters
```
public ParameterValueGroup getReadParameters()
```
    Description copied from interface: Format
    
    Retrieve the parameter information for a read operation.
    
    Specified by:
    
    getReadParameters in interface Format
  - getWriteParameters
```
public ParameterValueGroup getWriteParameters()
```
    Description copied from interface: Format
    
    Retrieve the parameter information for a write operation.
    
    Specified by:
    
    getWriteParameters in interface Format
  - getDefaultCRS
```
public static CoordinateReferenceSystem getDefaultCRS()
```
    getDefaultCRS
    This method provides the user with a default crs WGS84
  - getDefaultImageIOWriteParameters
```
public abstract GeoToolsWriteParams getDefaultImageIOWriteParameters()
```
    Returns an instance of ImageWriteParam that can be used to control a subsequent GridCoverageWriter.write(org.opengis.coverage.grid.GridCoverage, org.opengis.parameter.GeneralParameterValue[]);
    Be careful with using the ImageWriteParam since their usage is still experimental.
    
    Returns:
    
    an instance of ImageWriteParam.
  - getWriter
```
public abstract GridCoverageWriter getWriter(Object destination,
                                             Hints hints)
```
    Call the accepts() method before asking for a writer to determine if the current object is supported.
    
    Parameters:
    
    destination - the destination object to write a WorldImage to
    
    hints - Hints to control the internal machinery.
    
    Returns:
    
    a new WorldImageWriter for the destination

Class AbstractGridFormat

Field Summary

Constructor Summary

Method Summary

Methods inherited from class Object

Field Detail

mInfo

readParameters

writeParameters

READ_GRIDGEOMETRY2D

PROGRESS_LISTENER

GEOTOOLS_WRITE_PARAMS

USE_JAI_IMAGEREAD

OVERVIEW_POLICY

DECIMATION_POLICY

SUGGESTED_TILE_SIZE

BANDS

TILE_SIZE_SEPARATOR

INPUT_TRANSPARENT_COLOR

BACKGROUND_COLOR

TIME

ELEVATION

INTERPOLATION

FOOTPRINT_BEHAVIOR

Constructor Detail

AbstractGridFormat

Method Detail

getName

getDescription

getVendor

getDocURL

getVersion

getReader

getReader

getWriter

accepts

accepts

equals

getReadParameters

getWriteParameters

getDefaultCRS

getDefaultImageIOWriteParameters

getWriter