Package org.esa.snap.core.datamodel

Class TiePointGrid

java.lang.Object

com.bc.ceres.core.ExtensibleObject

org.esa.snap.core.datamodel.ProductNode

org.esa.snap.core.datamodel.DataNode

org.esa.snap.core.datamodel.RasterDataNode

org.esa.snap.core.datamodel.TiePointGrid

All Implemented Interfaces:

Extensible, Scaling, SceneTransformProvider

public class TiePointGrid
extends RasterDataNode

A tie-point grid contains the data for geophysical parameter in remote sensing data products. Tie-point grid are two-dimensional images which hold their pixel values (samples) in a float array.

Usually, tie-point grids are a sub-sampling of a data product's scene resolution.

Nested Class Summary

Nested classes/interfaces inherited from class org.esa.snap.core.datamodel.RasterDataNode

RasterDataNode.RasterDataProcessor

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DISCONT_AT_180	Tie point values have angles in the range -180...+180 degrees and may comprise a discontinuity at 180 (resp.
static final int	DISCONT_AT_360	Tie point values have are angles in the range 0...+360 degrees and may comprise a discontinuity at 360 (resp.
static final int	DISCONT_AUTO	The discontinuity of the tie point values shall be detected automatically.
static final int	DISCONT_NONE	Tie point values are assumed to have none discontinuities.

Fields inherited from class org.esa.snap.core.datamodel.RasterDataNode

INVALID_POS_TEXT, IO_ERROR_TEXT, NO_DATA_TEXT, PROPERTY_NAME_ANCILLARY_RELATIONS, PROPERTY_NAME_ANCILLARY_VARIABLES, PROPERTY_NAME_GEO_CODING, PROPERTY_NAME_IMAGE_INFO, PROPERTY_NAME_IMAGE_TO_MODEL_TRANSFORM, PROPERTY_NAME_LOG_10_SCALED, PROPERTY_NAME_MODEL_TO_SCENE_TRANSFORM, PROPERTY_NAME_NO_DATA_VALUE, PROPERTY_NAME_NO_DATA_VALUE_USED, PROPERTY_NAME_SCALING_FACTOR, PROPERTY_NAME_SCALING_OFFSET, PROPERTY_NAME_SCENE_TO_MODEL_TRANSFORM, PROPERTY_NAME_STX, PROPERTY_NAME_TIME_CODING, PROPERTY_NAME_VALID_PIXEL_EXPRESSION

Fields inherited from class org.esa.snap.core.datamodel.DataNode

PROPERTY_NAME_DATA, PROPERTY_NAME_READ_ONLY, PROPERTY_NAME_SYNTHETIC, PROPERTY_NAME_UNIT

Fields inherited from class org.esa.snap.core.datamodel.ProductNode

PROPERTY_NAME_DESCRIPTION, PROPERTY_NAME_NAME

Fields inherited from interface org.esa.snap.core.datamodel.Scaling

IDENTITY

Constructor Summary

Constructors

Constructor	Description
TiePointGrid(String name, int gridWidth, int gridHeight, double offsetX, double offsetY, double subSamplingX, double subSamplingY)	Constructs a new TiePointGrid with the given tie point grid properties.
TiePointGrid(String name, int gridWidth, int gridHeight, double offsetX, double offsetY, double subSamplingX, double subSamplingY, float[] tiePoints)	Constructs a new TiePointGrid with the given tie point grid properties.
TiePointGrid(String name, int gridWidth, int gridHeight, double offsetX, double offsetY, double subSamplingX, double subSamplingY, float[] tiePoints, boolean containsAngles)	Constructs a new TiePointGrid with the given tie point grid properties.
TiePointGrid(String name, int gridWidth, int gridHeight, double offsetX, double offsetY, double subSamplingX, double subSamplingY, float[] tiePoints, int discontinuity)	Constructs a new TiePointGrid with the given tie point grid properties.

Method Summary

Modifier and Type	Method	Description
void	acceptVisitor(ProductVisitor visitor)	Accepts the given visitor.
TiePointGrid	cloneTiePointGrid()
protected RenderedImage	createSourceImage()	Creates the source image associated with this RasterDataNode.
static TiePointGrid	createSubset(TiePointGrid sourceTiePointGrid, ProductSubsetDef subsetDef)
static TiePointGrid	createZenithFromElevationAngleTiePointGrid(TiePointGrid elevationAngleGrid)
void	dispose()	Releases all of the resources used by this object instance and all of its owned children.
protected static double[]	ensureMinLengthArray(double[] array, int length)
protected static float[]	ensureMinLengthArray(float[] array, int length)
protected static int[]	ensureMinLengthArray(int[] array, int length)
int	getDiscontinuity()	Gets the angular discontinuity.
static int	getDiscontinuity(float[] tiePoints)	Determines the angular discontinuity of the given tie point values.
int	getGeophysicalDataType()	Returns the geophysical data type of this RasterDataNode.
ProductData	getGridData()
int	getGridHeight()
int	getGridWidth()
double	getOffsetX()	Retrieves the x co-ordinate of the first (upper-left) tie-point in pixels.
double	getOffsetY()	Retrieves the y co-ordinate of the first (upper-left) tie-point in pixels.
double	getPixelDouble(double x, double y)	Gets the interpolated sample for the pixel located at (x,y) as a double value.
double	getPixelDouble(int x, int y)	Gets the interpolated sample for the pixel located at (x,y) as a double value.
final float	getPixelFloat(float x, float y)	Computes the interpolated sample for the pixel located at (x,y) given as floating point co-ordinates.
float	getPixelFloat(int x, int y)	Computes the interpolated sample for the pixel located at (x,y).
int	getPixelInt(int x, int y)	Gets the interpolated sample for the pixel located at (x,y) as an integer value.
double[]	getPixels(int x, int y, int w, int h, double[] pixels, ProgressMonitor pm)	Retrieves an array of tie point data interpolated to the product width and height as float array.
float[]	getPixels(int x, int y, int w, int h, float[] pixels, ProgressMonitor pm)	Retrieves an array of tie point data interpolated to the product with and height as double array.
int[]	getPixels(int x, int y, int w, int h, int[] pixels, ProgressMonitor pm)	Retrieves an array of tie point data interpolated to the product with and height as integer array.
ProductData	getRasterData()	Gets the linear interpolated raster data containing rasterWidth x rasterHeight samples.
int	getRasterHeight()
int	getRasterWidth()
double	getSubSamplingX()	Returns the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.
double	getSubSamplingY()	Returns the sub-sampling in Y-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.
float[]	getTiePoints()
boolean	isFloatingPointType()	Returns true
double[]	readPixels(int x, int y, int w, int h, double[] pixels, ProgressMonitor pm)	Retrieves an array of tie point data interpolated to the product with and height as double array.
float[]	readPixels(int x, int y, int w, int h, float[] pixels, ProgressMonitor pm)	Retrieves an array of tie point data interpolated to the product with and height as float array.
int[]	readPixels(int x, int y, int w, int h, int[] pixels, ProgressMonitor pm)	Retrieves an array of tie point data interpolated to the product with and height as float array.
void	readRasterData(int offsetX, int offsetY, int width, int height, ProductData rasterData, ProgressMonitor pm)	Reads raster data from this dataset into the user-supplied raster data buffer.
void	readRasterDataFully(ProgressMonitor pm)	Reads the complete underlying raster data.
void	setData(ProductData data)	Sets the data of this data node.
void	setDiscontinuity(int discontinuity)	Sets the angular discontinuity.
void	setPixelDouble(int x, int y, double pixelValue)	This method is not implemented because pixels are read-only in tie-point grids.
void	setPixelFloat(int x, int y, float pixelValue)	This method is not implemented because pixels are read-only in tie-point grids.
void	setPixelInt(int x, int y, int pixelValue)	This method is not implemented because pixels are read-only in tie-point grids.
void	setPixels(int x, int y, int w, int h, double[] pixels)	This method is not implemented because pixels are read-only in tie-point grids.
void	setPixels(int x, int y, int w, int h, float[] pixels)	This method is not implemented because pixels are read-only in tie-point grids.
void	setPixels(int x, int y, int w, int h, int[] pixels)	This method is not implemented because pixels are read-only in tie-point grids.
void	setRasterData(ProductData rasterData)	The method will always fail on tie-point grids as they are read-only.
void	writePixels(int x, int y, int w, int h, double[] pixels, ProgressMonitor pm)	This method is not implemented because pixels are read-only in tie-point grids.
void	writePixels(int x, int y, int w, int h, float[] pixels, ProgressMonitor pm)	This method is not implemented because pixels are read-only in tie-point grids.
void	writePixels(int x, int y, int w, int h, int[] pixels, ProgressMonitor pm)	This method is not implemented because pixels are read-only in tie-point grids.
void	writeRasterData(int offsetX, int offsetY, int width, int height, ProductData rasterData, ProgressMonitor pm)	Writes data from this product raster into the specified region of the user-supplied raster.
void	writeRasterDataFully(ProgressMonitor pm)	Writes the complete underlying raster data.

Methods inherited from class org.esa.snap.core.datamodel.RasterDataNode

addAncillaryVariable, canBeOrthorectified, checkCompatibleRasterData, clearNoDataValue, computeStxImpl, createColorIndexedImage, createCompatibleRasterData, createCompatibleRasterData, createCompatibleSceneRasterData, createDefaultImageInfo, createDefaultImageInfo, createMultiLevelModel, createPointing, createRgbImage, createTransectProfileData, fireImageInfoChanged, getAncillaryRelations, getAncillaryVariable, getAncillaryVariables, getGeoCoding, getGeophysicalImage, getGeophysicalNoDataValue, getImageInfo, getImageInfo, getImageInfo, getImageToModelTransform, getModelToSceneTransform, getMultiLevelModel, getNoDataValue, getOverlayMaskGroup, getPixels, getPixels, getPixelString, getPointing, getRasterSize, getSampleFloat, getSampleInt, getScalingFactor, getScalingOffset, getSceneToModelTransform, getSourceImage, getStx, getStx, getTimeCoding, getValidMaskExpression, getValidMaskImage, getValidPixelExpression, getValidShape, hasGeoCoding, hasIntPixels, hasRasterData, isCompatibleRasterData, isGeophysicalImageSet, isLog10Scaled, isNoDataValueSet, isNoDataValueUsed, isPixelValid, isPixelValid, isPixelValid, isPixelWithinImageBounds, isScalingApplied, isSourceImageSet, isStxSet, isValidMaskImageSet, isValidMaskProperty, isValidMaskUsed, loadRasterData, loadRasterData, processRasterData, quantizeRasterData, quantizeRasterData, readPixels, readPixels, readPixels, readRasterData, readRasterDataFully, readValidMask, removeAncillaryVariable, removeCachedImageData, resetValidMask, scale, scaleInverse, setAncillaryRelations, setGeoCoding, setGeophysicalNoDataValue, setImageInfo, setImageInfo, setImageToModelTransform, setLog10Scaled, setModelToSceneTransform, setModified, setNoDataValue, setNoDataValueUsed, setScalingFactor, setScalingOffset, setSceneToModelTransform, setSourceImage, setSourceImage, setStx, setTimeCoding, setValidPixelExpression, unloadRasterData, updateExpression, writePixels, writePixels, writePixels, writeRasterData, writeRasterDataFully

Methods inherited from class org.esa.snap.core.datamodel.DataNode

checkDataCompatibility, createCompatibleProductData, fireProductNodeDataChanged, getData, getDataElems, getDataElemSize, getDataType, getNumDataElems, getRawStorageSize, getUnit, isReadOnly, isSynthetic, setDataElems, setReadOnly, setSynthetic, setUnit

Methods inherited from class org.esa.snap.core.datamodel.ProductNode

fireProductNodeChanged, fireProductNodeChanged, getDescription, getDisplayName, getName, getOwner, getProduct, getProductReader, getProductReaderSafe, getProductRefString, getProductSafe, getProductWriter, getProductWriterSafe, getRawStorageSize, isModified, isPartOfSubset, isValidNodeName, removeFromFile, setDescription, setName, setNodeName, setOwner, toString

Methods inherited from class com.bc.ceres.core.ExtensibleObject

getExtension

Methods inherited from class java.lang.Object

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

Field Details

DISCONT_AUTO

public static final int DISCONT_AUTO

The discontinuity of the tie point values shall be detected automatically.

See Also:

• Constant Field Values

DISCONT_NONE

public static final int DISCONT_NONE

Tie point values are assumed to have none discontinuities.

See Also:

• Constant Field Values

DISCONT_AT_180

public static final int DISCONT_AT_180

Tie point values have angles in the range -180...+180 degrees and may comprise a discontinuity at 180 (resp. -180) degrees.

See Also:

• Constant Field Values

DISCONT_AT_360

public static final int DISCONT_AT_360

Tie point values have are angles in the range 0...+360 degrees and may comprise a discontinuity at 360 (resp. 0) degrees.

See Also:

• Constant Field Values

Constructor Details

TiePointGrid

public TiePointGrid(String name,
 int gridWidth,
 int gridHeight,
 double offsetX,
 double offsetY,
 double subSamplingX,
 double subSamplingY)

Constructs a new TiePointGrid with the given tie point grid properties.

Parameters:

name - the name of the new object

gridWidth - the width of the tie-point grid in pixels

gridHeight - the height of the tie-point grid in pixels

offsetX - the X co-ordinate of the first (upper-left) tie-point in pixels

offsetY - the Y co-ordinate of the first (upper-left) tie-point in pixels

subSamplingX - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

subSamplingY - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

TiePointGrid

public TiePointGrid(String name,
 int gridWidth,
 int gridHeight,
 double offsetX,
 double offsetY,
 double subSamplingX,
 double subSamplingY,
 float[] tiePoints)

Constructs a new TiePointGrid with the given tie point grid properties.

Parameters:

name - the name of the new object

gridWidth - the width of the tie-point grid in pixels

gridHeight - the height of the tie-point grid in pixels

offsetX - the X co-ordinate of the first (upper-left) tie-point in pixels

offsetY - the Y co-ordinate of the first (upper-left) tie-point in pixels

subSamplingX - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

subSamplingY - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

tiePoints - the tie-point data values, must be an array of the size gridWidth * gridHeight

TiePointGrid

public TiePointGrid(String name,
 int gridWidth,
 int gridHeight,
 double offsetX,
 double offsetY,
 double subSamplingX,
 double subSamplingY,
 float[] tiePoints,
 boolean containsAngles)

Constructs a new TiePointGrid with the given tie point grid properties.

Parameters:

name - the name of the new object

gridWidth - the width of the tie-point grid in pixels

gridHeight - the height of the tie-point grid in pixels

offsetX - the X co-ordinate of the first (upper-left) tie-point in pixels

offsetY - the Y co-ordinate of the first (upper-left) tie-point in pixels

subSamplingX - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

subSamplingY - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

tiePoints - the tie-point data values, must be an array of the size gridWidth * gridHeight

containsAngles - if true, the angular discontinuity is derived from the provided tie-point data values

TiePointGrid

public TiePointGrid(String name,
 int gridWidth,
 int gridHeight,
 double offsetX,
 double offsetY,
 double subSamplingX,
 double subSamplingY,
 float[] tiePoints,
 int discontinuity)

Constructs a new TiePointGrid with the given tie point grid properties.

Parameters:

name - the name of the new object

gridWidth - the width of the tie-point grid in pixels

gridHeight - the height of the tie-point grid in pixels

offsetX - the X co-ordinate of the first (upper-left) tie-point in pixels

offsetY - the Y co-ordinate of the first (upper-left) tie-point in pixels

subSamplingX - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

subSamplingY - the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to. Must not be less than one.

tiePoints - the tie-point data values, must be an array of the size gridWidth * gridHeight

discontinuity - the discontinuity mode, can be either DISCONT_NONE, DISCONT_AUTO, DISCONT_AT_180 or DISCONT_AT_360

Method Details

getGridWidth

public int getGridWidth()

Returns:

The grid's width (= number of columns).

getGridHeight

public int getGridHeight()

Returns:

The grid's height (= number of rows).

getOffsetX

public double getOffsetX()

Retrieves the x co-ordinate of the first (upper-left) tie-point in pixels.

getOffsetY

public double getOffsetY()

Retrieves the y co-ordinate of the first (upper-left) tie-point in pixels.

getSubSamplingX

public double getSubSamplingX()

Returns the sub-sampling in X-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

Returns:

the sub-sampling in X-direction, never less than one.

getSubSamplingY

public double getSubSamplingY()

Returns the sub-sampling in Y-direction given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

Returns:

the sub-sampling in Y-direction, never less than one.

getTiePoints

public float[] getTiePoints()

Returns:

The data array representing the single tie-points.

getGridData

public ProductData getGridData()

Returns:

The data buffer representing the single tie-points.

getRasterWidth

public int getRasterWidth()

Specified by:

getRasterWidth in class RasterDataNode

Returns:

The native width of the raster in pixels.

getRasterHeight

public int getRasterHeight()

Specified by:

getRasterHeight in class RasterDataNode

Returns:

The native height of the raster in pixels.

getDiscontinuity

public static int getDiscontinuity(float[] tiePoints)

Determines the angular discontinuity of the given tie point values.

Returns:

the angular discontinuity, will always be either DISCONT_AT_180 or DISCONT_AT_360

getDiscontinuity

public int getDiscontinuity()

Gets the angular discontinuity.

Returns:

the angular discontinuity, will always be either DISCONT_NONE, DISCONT_AUTO, DISCONT_AT_180 or DISCONT_AT_360

setDiscontinuity

public void setDiscontinuity(int discontinuity)

Sets the angular discontinuity.

Parameters:

discontinuity - angular discontinuity, can be either DISCONT_NONE, DISCONT_AUTO, DISCONT_AT_180 or DISCONT_AT_360

isFloatingPointType

public boolean isFloatingPointType()

Returns true

Overrides:

isFloatingPointType in class RasterDataNode

Returns:

true

getGeophysicalDataType

public int getGeophysicalDataType()

Returns the geophysical data type of this RasterDataNode. The value returned is always one of the ProductData.TYPE_XXX constants.

Overrides:

getGeophysicalDataType in class RasterDataNode

Returns:

the geophysical data type

See Also:

• ProductData

setData

public void setData(ProductData data)

Description copied from class: DataNode

Sets the data of this data node.

Overrides:

setData in class DataNode

getRasterData

public ProductData getRasterData()

Gets the linear interpolated raster data containing rasterWidth x rasterHeight samples.

Overrides:

getRasterData in class RasterDataNode

Returns:

The raster data for this tie-point grid.

setRasterData

public void setRasterData(ProductData rasterData)
                   throws UnsupportedOperationException

The method will always fail on tie-point grids as they are read-only.

Overrides:

setRasterData in class RasterDataNode

Parameters:

rasterData - The raster data whose reference will be stored.

Throws:

UnsupportedOperationException

See Also:

• RasterDataNode.getRasterData()

getPixelInt

public int getPixelInt(int x,
 int y)

Gets the interpolated sample for the pixel located at (x,y) as an integer value.

If the pixel co-ordinates given by (x,y) are not covered by this tie-point grid, the method extrapolates.

Specified by:

getPixelInt in class RasterDataNode

Parameters:

x - The X co-ordinate of the pixel location

y - The Y co-ordinate of the pixel location

Returns:

the pixel value at (x,y)

Throws:

ArrayIndexOutOfBoundsException - if the co-ordinates are not in bounds

dispose

public void dispose()

Description copied from class: RasterDataNode

Releases all of the resources used by this object instance and all of its owned children. Its primary use is to allow the garbage collector to perform a vanilla job.

This method should be called only if it is for sure that this object instance will never be used again. The results of referencing an instance of this class after a call to dispose() are undefined.

Overrides of this method should always call super.dispose(); after disposing this instance.

Overrides:

dispose in class RasterDataNode

getPixelFloat

public float getPixelFloat(int x,
 int y)

Computes the interpolated sample for the pixel located at (x,y).

If the pixel co-ordinates given by (x,y) are not covered by this tie-point grid, the method extrapolates.

Specified by:

getPixelFloat in class RasterDataNode

Parameters:

x - The X co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

y - The Y co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

Returns:

the pixel value at (x,y)

Throws:

ArrayIndexOutOfBoundsException - if the co-ordinates are not in bounds

getPixelFloat

public final float getPixelFloat(float x,
 float y)

Computes the interpolated sample for the pixel located at (x,y) given as floating point co-ordinates.

If the pixel co-ordinates given by (x,y) are not covered by this tie-point grid, the method extrapolates.

Parameters:

x - The X co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

y - The Y co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

Throws:

ArrayIndexOutOfBoundsException - if the co-ordinates are not in bounds

getPixelDouble

public double getPixelDouble(int x,
 int y)

Gets the interpolated sample for the pixel located at (x,y) as a double value.

If the pixel co-ordinates given by (x,y) are not covered by this tie-point grid, the method extrapolates.

Specified by:

getPixelDouble in class RasterDataNode

Parameters:

x - The X co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

y - The Y co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

Returns:

the pixel value at (x,y)

Throws:

ArrayIndexOutOfBoundsException - if the co-ordinates are not in bounds

getPixelDouble

public double getPixelDouble(double x,
 double y)

Gets the interpolated sample for the pixel located at (x,y) as a double value.

If the pixel co-ordinates given by (x,y) are not covered by this tie-point grid, the method extrapolates.

Parameters:

x - The X co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

y - The Y co-ordinate of the pixel location, given in the pixel co-ordinates of the data product to which this tie-point grid belongs to.

Throws:

ArrayIndexOutOfBoundsException - if the co-ordinates are not in bounds

setPixelInt

public void setPixelInt(int x,
 int y,
 int pixelValue)

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

setPixelInt in class RasterDataNode

Parameters:

x - the X co-ordinate of the pixel location

y - the Y co-ordinate of the pixel location

pixelValue - the new pixel value at (x,y)

setPixelFloat

public void setPixelFloat(int x,
 int y,
 float pixelValue)

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

setPixelFloat in class RasterDataNode

Parameters:

x - the X co-ordinate of the pixel location

y - the Y co-ordinate of the pixel location

pixelValue - the new pixel value at (x,y)

setPixelDouble

public void setPixelDouble(int x,
 int y,
 double pixelValue)

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

setPixelDouble in class RasterDataNode

Parameters:

x - the X co-ordinate of the pixel location

y - the Y co-ordinate of the pixel location

pixelValue - the new pixel value at (x,y)

getPixels

public int[] getPixels(int x,
 int y,
 int w,
 int h,
 int[] pixels,
 ProgressMonitor pm)

Retrieves an array of tie point data interpolated to the product with and height as integer array. If the given array is null a new one was created and returned.

Specified by:

getPixels in class RasterDataNode

Parameters:

x - the x coordinate of the array to be read

y - the y coordinate of the array to be read

w - the width of the array to be read

h - the height of the array to be read

pixels - the integer array to be filled with data

pm - a monitor to inform the user about progress

Throws:

IllegalArgumentException - if the length of the given array is less than w*h.

getPixels

public double[] getPixels(int x,
 int y,
 int w,
 int h,
 double[] pixels,
 ProgressMonitor pm)

Retrieves an array of tie point data interpolated to the product width and height as float array. If the given array is null a new one is created and returned.

Specified by:

getPixels in class RasterDataNode

Parameters:

x - the x coordinate of the array to be read

y - the y coordinate of the array to be read

w - the width of the array to be read

h - the height of the array to be read

pixels - the float array to be filled with data

pm - a monitor to inform the user about progress

Throws:

IllegalArgumentException - if the length of the given array is less than w*h.

getPixels

public float[] getPixels(int x,
 int y,
 int w,
 int h,
 float[] pixels,
 ProgressMonitor pm)

Retrieves an array of tie point data interpolated to the product with and height as double array. If the given array is null a new one was created and returned.

Specified by:

getPixels in class RasterDataNode

Parameters:

x - the x coordinate of the array to be read

y - the y coordinate of the array to be read

w - the width of the array to be read

h - the height of the array to be read

pixels - the double array to be filled with data

pm - a progress monitor

Throws:

IllegalArgumentException - if the length of the given array is less than w*h.

setPixels

public void setPixels(int x,
 int y,
 int w,
 int h,
 int[] pixels)

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

setPixels in class RasterDataNode

Parameters:

x - x offset into the band

y - y offset into the band

w - width of the pixel array to be written

h - height of the pixel array to be written.

pixels - integer array to be written

setPixels

public void setPixels(int x,
 int y,
 int w,
 int h,
 float[] pixels)

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

setPixels in class RasterDataNode

Parameters:

x - x offset into the band

y - y offset into the band

w - width of the pixel array to be written

h - height of the pixel array to be written.

pixels - float array to be written

setPixels

public void setPixels(int x,
 int y,
 int w,
 int h,
 double[] pixels)

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

setPixels in class RasterDataNode

Parameters:

x - x offset into the band

y - y offset into the band

w - width of the pixel array to be written

h - height of the pixel array to be written.

pixels - double array to be written

readPixels

public int[] readPixels(int x,
 int y,
 int w,
 int h,
 int[] pixels,
 ProgressMonitor pm)
                 throws IOException

Retrieves an array of tie point data interpolated to the product with and height as float array. If the given array is null a new one was created and returned.

Specified by:

readPixels in class RasterDataNode

Parameters:

x - the x coordinate of the array to be read

y - the y coordinate of the array to be read

w - the width of the array to be read

h - the height of the array to be read

pixels - the integer array to be filled with data

pm - a progress monitor

Returns:

the pixels read

Throws:

IllegalArgumentException - if the length of the given array is less than w*h.

IOException - if an /IO error occurs

readPixels

public float[] readPixels(int x,
 int y,
 int w,
 int h,
 float[] pixels,
 ProgressMonitor pm)
                   throws IOException

Retrieves an array of tie point data interpolated to the product with and height as float array. If the given array is null a new one was created and returned. *

Specified by:

readPixels in class RasterDataNode

Parameters:

x - the x coordinate of the array to be read

y - the y coordinate of the array to be read

w - the width of the array to be read

h - the height of the array to be read

pixels - the float array to be filled with data

pm - a monitor to inform the user about progress

Returns:

the pixels read

Throws:

IllegalArgumentException - if the length of the given array is less than w*h.

IOException

readPixels

public double[] readPixels(int x,
 int y,
 int w,
 int h,
 double[] pixels,
 ProgressMonitor pm)
                    throws IOException

Retrieves an array of tie point data interpolated to the product with and height as double array. If the given array is null a new one was created and returned.

Specified by:

readPixels in class RasterDataNode

Parameters:

x - the x coordinate of the array to be read

y - the y coordinate of the array to be read

w - the width of the array to be read

h - the height of the array to be read

pixels - the double array to be filled with data

pm - a monitor to inform the user about progress

Returns:

the pixels read

Throws:

IllegalArgumentException - if the length of the given array is less than w*h.

IOException

writePixels

public void writePixels(int x,
 int y,
 int w,
 int h,
 int[] pixels,
 ProgressMonitor pm)
                 throws IOException

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

writePixels in class RasterDataNode

Parameters:

x - x offset into the band

y - y offset into the band

w - width of the pixel array to be written

h - height of the pixel array to be written

pixels - array of pixels to write

pm - a progress monitor

Throws:

IOException - if an I/O error occurs

writePixels

public void writePixels(int x,
 int y,
 int w,
 int h,
 float[] pixels,
 ProgressMonitor pm)
                 throws IOException

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

writePixels in class RasterDataNode

Parameters:

x - x offset into the band

y - y offset into the band

w - width of the pixel array to be written

h - height of the pixel array to be written

pixels - array of pixels to write

pm - a progress monitor

Throws:

IOException - if an I/O error occurs

writePixels

public void writePixels(int x,
 int y,
 int w,
 int h,
 double[] pixels,
 ProgressMonitor pm)
                 throws IOException

This method is not implemented because pixels are read-only in tie-point grids.

Specified by:

writePixels in class RasterDataNode

Parameters:

x - x offset into the band

y - y offset into the band

w - width of the pixel array to be written

h - height of the pixel array to be written

pixels - array of pixels to write

pm - a progress monitor

Throws:

IOException - if an I/O error occurs

readRasterData

public void readRasterData(int offsetX,
 int offsetY,
 int width,
 int height,
 ProductData rasterData,
 ProgressMonitor pm)
                    throws IOException

Reads raster data from this dataset into the user-supplied raster data buffer.

This method always directly (re-)reads this tie-point grid's data from its associated data source into the given data buffer.

Specified by:

readRasterData in class RasterDataNode

Parameters:

offsetX - the X-offset in the raster co-ordinates where reading starts

offsetY - the Y-offset in the raster co-ordinates where reading starts

width - the width of the raster data buffer

height - the height of the raster data buffer

rasterData - a raster data buffer receiving the pixels to be read

pm - a monitor to inform the user about progress

Throws:

IOException - if an I/O error occurs

IllegalArgumentException - if the raster is null

IllegalStateException - if this product raster was not added to a product so far, or if the product to which this product raster belongs to, has no associated product reader

See Also:

• ProductReader.readBandRasterData(Band, int, int, int, int, ProductData, com.bc.ceres.core.ProgressMonitor)

readRasterDataFully

public void readRasterDataFully(ProgressMonitor pm)
                         throws IOException

Reads the complete underlying raster data.

After this method has been called successfully, hasRasterData() should always return true and getRasterData() should always return a valid ProductData instance with at least getRasterWidth()*getRasterHeight() elements (samples).

In opposite to the loadRasterData method, the readRasterDataFully method always reloads the data of this product raster, independently of whether its has already been loaded or not.

Specified by:

readRasterDataFully in class RasterDataNode

Parameters:

pm - a monitor to inform the user about progress

Throws:

IOException - if an I/O error occurs

See Also:

• RasterDataNode.loadRasterData()
• RasterDataNode.readRasterData(int, int, int, int, ProductData, com.bc.ceres.core.ProgressMonitor)

writeRasterData

public void writeRasterData(int offsetX,
 int offsetY,
 int width,
 int height,
 ProductData rasterData,
 ProgressMonitor pm)
                     throws IOException

Writes data from this product raster into the specified region of the user-supplied raster.

It is important to know that this method does not change this product raster's internal state nor does it write into this product raster's internal raster.

Specified by:

writeRasterData in class RasterDataNode

Parameters:

offsetX - the X-offset in raster co-ordinates where reading starts

offsetY - the Y-offset in raster co-ordinates where reading starts

width - the width of the raster data buffer

height - the height of the raster data buffer

rasterData - a raster data buffer receiving the pixels to be read

pm - a monitor to inform the user about progress

Throws:

IOException - if an I/O error occurs

See Also:

• ProductReader.readBandRasterData(Band, int, int, int, int, ProductData, com.bc.ceres.core.ProgressMonitor)

writeRasterDataFully

public void writeRasterDataFully(ProgressMonitor pm)
                          throws IOException

Writes the complete underlying raster data.

Specified by:

writeRasterDataFully in class RasterDataNode

Parameters:

pm - a monitor to inform the user about progress

Throws:

IOException - if an I/O error occurs

createSourceImage

protected RenderedImage createSourceImage()

Description copied from class: RasterDataNode

Creates the source image associated with this RasterDataNode. This shall preferably be a MultiLevelImage instance which recognises this raster data node's imageToModelTransform property, if set.

Specified by:

createSourceImage in class RasterDataNode

Returns:

A new source image instance.

acceptVisitor

public void acceptVisitor(ProductVisitor visitor)

Accepts the given visitor. This method implements the well known 'Visitor' design pattern of the gang-of-four. The visitor pattern allows to define new operations on the product data model without the need to add more code to it. The new operation is implemented by the visitor.

The method simply calls visitor.visit(this).

Specified by:

acceptVisitor in class RasterDataNode

Parameters:

visitor - the visitor

cloneTiePointGrid

public TiePointGrid cloneTiePointGrid()

createZenithFromElevationAngleTiePointGrid

public static TiePointGrid createZenithFromElevationAngleTiePointGrid(TiePointGrid elevationAngleGrid)

ensureMinLengthArray

protected static int[] ensureMinLengthArray(int[] array,
 int length)

ensureMinLengthArray

protected static float[] ensureMinLengthArray(float[] array,
 int length)

ensureMinLengthArray

protected static double[] ensureMinLengthArray(double[] array,
 int length)

createSubset

public static TiePointGrid createSubset(TiePointGrid sourceTiePointGrid,
 ProductSubsetDef subsetDef)