visad

Class GriddedSet

java.lang.Object

visad.ThingImpl

visad.DataImpl

visad.Set

visad.SimpleSet

visad.SampledSet

visad.GriddedSet

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Data, GriddedSetIface, SampledSetIface, SetIface, SimpleSetIface, Thing

Direct Known Subclasses:

Gridded1DSet, Gridded2DSet, Gridded3DSet, LinearNDSet

public class GriddedSet
extends SampledSet
implements GriddedSetIface

GriddedSet is implemented by those Set sub-classes whose samples lie on a rectangular grid topology (but note the geometry need not be rectangular). It is a M-dimensional array of points in R^N where ManifoldDimension = M <= N = DomainDimension.

The order of the samples is the rasterization of the orders of the 1D components, with the first component increasing fastest. For more detail, see the example in Linear2DSet.java.

Grid coordinates are zero-based and in the range -0.5 to length-0.5 i.e., there are "length" intervals of length 1.0, the first centered on 0.0 and the last centered on length-1.0 points outside this range are indicated by the grid coordinate Double.NaN.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class visad.DataImpl

DataImpl.Syncher

Field Summary

Fields inherited from interface visad.Data

ABS, ACOS, ACOS_DEGREES, ADD, ASIN, ASIN_DEGREES, ATAN, ATAN_DEGREES, ATAN2, ATAN2_DEGREES, CEIL, COS, COS_DEGREES, DEGREES_TO_RADIANS, DEPENDENT, DIVIDE, EXP, FLOOR, INDEPENDENT, INV_ATAN2, INV_ATAN2_DEGREES, INV_DIVIDE, INV_POW, INV_REMAINDER, INV_SUBTRACT, LOG, MAX, MIN, MULTIPLY, NEAREST_NEIGHBOR, NEGATE, NO_ERRORS, NOP, POW, RADIANS_TO_DEGREES, REMAINDER, RINT, ROUND, SIN, SIN_DEGREES, SQRT, SUBTRACT, TAN, TAN_DEGREES, WEIGHTED_AVERAGE

Constructor Summary

Constructors

Constructor and Description
GriddedSet(MathType type, float[][] samples, int[] lengths) construct a GriddedSet with samples
GriddedSet(MathType type, float[][] samples, int[] lengths, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors) construct a GriddedSet with samples and non-default CoordinateSystem
GriddedSet(MathType type, float[][] samples, int[] lengths, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors, boolean copy)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	cloneButType(MathType type) copy this Set, but give it a new MathType; this is safe, since constructor checks consistency of DomainCoordinateSystem and SetUnits with Type
static GriddedSet	create(MathType type, float[][] samples, int[] lengths) Abreviated Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).
static GriddedSet	create(MathType type, float[][] samples, int[] lengths, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors) General Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).
static GriddedSet	create(MathType type, float[][] samples, int[] lengths, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors, boolean copy) General Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).
static GriddedSet	create(MathType type, float[][] samples, int[] lengths, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors, boolean copy, boolean test) General Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).
boolean	equals(java.lang.Object set) test for equality
int	getLength(int i) Returns the number of grid points in a given dimension.
int[]	getLengths() Returns the number of grid points in all dimensions.
int[][]	getNeighbors(int manifoldIndex) Returns the indexes of the neighboring points along a manifold dimesion for every point in the set.
void	getNeighbors(int[][] neighbors) Returns the indexes of the neighboring points for every point in the set.
int[]	getWedge() returns a zig-zagging ennumeration of index values with good coherence
float[][]	gridToValue(float[][] grid) transform an array of non-integer grid coordinates to an array of values in R^DomainDimension
int	hashCode() Returns the hash code of this instance.
float[][]	indexToValue(int[] index) convert an array of 1-D indices to an array of values in R^DomainDimension
java.lang.String	longString(java.lang.String pre)
Set	makeSpatial(SetType type, float[][] samples)
float[][]	valueToGrid(float[][] value) transform an array of values in R^DomainDimension to an array of non-integer grid coordinates
float[][]	valueToGrid(float[][] value, int[] guess) Transform an array of values in R^DomainDimension to an array of non-integer grid coordinates.
int[]	valueToIndex(float[][] value) convert an array of values in R^DomainDimension to an array of 1-D indices
void	valueToInterp(float[][] value, int[][] indices, float[][] weights) for each of an array of values in R^DomainDimension, compute an array of 1-D indices and an array of weights, to be used for interpolation; indices[i] and weights[i] are null if i-th value is outside grid (i.e., if no interpolation is possible) A guess for the first value may be supplied
void	valueToInterp(float[][] value, int[][] indices, float[][] weights, int[] guess)

Methods inherited from class visad.SampledSet

clone, computeRanges, computeRanges, cram_missing, finalize, getHi, getLow, getNeighbors, getSamples, getSamples, isMissing, make1DGeometry, make3DGeometry, makePointGeometry, setCacheSizeThreshold, setGeometryArray, setGeometryArray

Methods inherited from class visad.SimpleSet

getManifoldDimension

Methods inherited from class visad.Set

__getitem__, __len__, addEqualsCache, addNotEqualsCache, copyDoubles, copyFloats, doubleToFloat, doubleToIndex, equalUnitAndCS, floatToDouble, getCoordinateSystem, getDimension, getDoubles, getDoubles, getLength, getSetErrors, getSetUnits, indexToDouble, longString, main, make2DGeometry, makeIsoLines, makeIsoSurface, merge1DSets, testEqualsCache, testNotEqualsCache, unary, unitAndCSHashCode

Methods inherited from class visad.DataImpl

__add__, __add__, __div__, __div__, __mod__, __mod__, __mul__, __mul__, __neg__, __pow__, __pow__, __radd__, __rdiv__, __rmod__, __rmul__, __rpow__, __rsub__, __sub__, __sub__, abs, abs, acos, acos, acosDegrees, acosDegrees, add, add, adjustSamplingError, asin, asin, asinDegrees, asinDegrees, atan, atan, atan2, atan2, atan2Degrees, atan2Degrees, atanDegrees, atanDegrees, binary, binary, ceil, ceil, changeMathType, computeRanges, computeRanges, cos, cos, cosDegrees, cosDegrees, dataClone, divide, divide, exp, exp, floor, floor, getType, local, log, log, max, max, min, min, multiply, multiply, negate, negate, notifyReferences, pow, pow, remainder, remainder, rint, rint, round, round, sin, sin, sinDegrees, sinDegrees, sqrt, sqrt, subtract, subtract, tan, tan, tanDegrees, tanDegrees, toString, unary

Methods inherited from class visad.ThingImpl

addReference, removeReference

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface visad.SampledSetIface

getHi, getLow

Methods inherited from interface visad.SetIface

cram_missing, doubleToIndex, equalUnitAndCS, getCoordinateSystem, getDimension, getDoubles, getDoubles, getLength, getManifoldDimension, getNeighbors, getSamples, getSamples, getSetErrors, getSetUnits, indexToDouble, make1DGeometry, make2DGeometry, make3DGeometry, makeIsoLines, makeIsoSurface, makePointGeometry, merge1DSets

Methods inherited from interface visad.Data

abs, abs, acos, acos, acosDegrees, acosDegrees, add, add, adjustSamplingError, asin, asin, asinDegrees, asinDegrees, atan, atan, atan2, atan2, atan2Degrees, atan2Degrees, atanDegrees, atanDegrees, binary, binary, ceil, ceil, changeMathType, computeRanges, computeRanges, computeRanges, cos, cos, cosDegrees, cosDegrees, dataClone, divide, divide, exp, exp, floor, floor, getType, isMissing, local, log, log, longString, max, max, min, min, multiply, multiply, negate, negate, pow, pow, remainder, remainder, rint, rint, round, round, sin, sin, sinDegrees, sinDegrees, sqrt, sqrt, subtract, subtract, tan, tan, tanDegrees, tanDegrees, unary, unary

Methods inherited from interface visad.Thing

addReference, removeReference

Constructor Detail

GriddedSet

public GriddedSet(MathType type,
                  float[][] samples,
                  int[] lengths)
           throws VisADException

construct a GriddedSet with samples

Throws:

VisADException

GriddedSet

public GriddedSet(MathType type,
                  float[][] samples,
                  int[] lengths,
                  CoordinateSystem coord_sys,
                  Unit[] units,
                  ErrorEstimate[] errors)
           throws VisADException

construct a GriddedSet with samples and non-default CoordinateSystem

Throws:

VisADException

GriddedSet

public GriddedSet(MathType type,
                  float[][] samples,
                  int[] lengths,
                  CoordinateSystem coord_sys,
                  Unit[] units,
                  ErrorEstimate[] errors,
                  boolean copy)
           throws VisADException

Throws:

VisADException

Method Detail

create

public static GriddedSet create(MathType type,
                                float[][] samples,
                                int[] lengths)
                         throws VisADException

Abreviated Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).

Parameters:

type - MathType for the returned set

samples - Set samples

lengths - The dimensionality of the manifold. lengths[i} contains the number of points in the manifold for dimension i.

Throws:

VisADException - problem creating the set

create

public static GriddedSet create(MathType type,
                                float[][] samples,
                                int[] lengths,
                                CoordinateSystem coord_sys,
                                Unit[] units,
                                ErrorEstimate[] errors)
                         throws VisADException

General Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).

Parameters:

type - MathType for the returned set

samples - Set samples

lengths - The dimensionality of the manifold. lengths[i} contains the number of points in the manifold for dimension i.

coord_sys - CoordinateSystem for the GriddedSet

units - Unit-s of the values in samples

errors - ErrorEstimate-s for the values

Throws:

VisADException - problem creating the set

create

public static GriddedSet create(MathType type,
                                float[][] samples,
                                int[] lengths,
                                CoordinateSystem coord_sys,
                                Unit[] units,
                                ErrorEstimate[] errors,
                                boolean copy)
                         throws VisADException

General Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).

Parameters:

type - MathType for the returned set

samples - Set samples

lengths - The dimensionality of the manifold. lengths[i} contains the number of points in the manifold for dimension i.

coord_sys - CoordinateSystem for the GriddedSet

units - Unit-s of the values in samples

errors - ErrorEstimate-s for the values

copy - make a copy of the samples

Throws:

VisADException - problem creating the set

create

public static GriddedSet create(MathType type,
                                float[][] samples,
                                int[] lengths,
                                CoordinateSystem coord_sys,
                                Unit[] units,
                                ErrorEstimate[] errors,
                                boolean copy,
                                boolean test)
                         throws VisADException

General Factory method for creating the proper gridded set (Gridded1DSet, Gridded2DSet, etc.).

Parameters:

type - MathType for the returned set

samples - Set samples

lengths - The dimensionality of the manifold. lengths[i} contains the number of points in the manifold for dimension i.

coord_sys - CoordinateSystem for the GriddedSet

units - Unit-s of the values in samples

errors - ErrorEstimate-s for the values

copy - make a copy of the samples

test - test to make sure samples are valid. Used for creating Gridded*DSets where the manifold dimension is equal to the domain dimension

Throws:

VisADException - problem creating the set

makeSpatial

public Set makeSpatial(SetType type,
                       float[][] samples)
                throws VisADException

Specified by:

makeSpatial in interface SetIface

Overrides:

makeSpatial in class Set

Throws:

VisADException

getLength

public int getLength(int i)

Description copied from interface: GriddedSetIface

Returns the number of grid points in a given dimension.

Specified by:

getLength in interface GriddedSetIface

Parameters:

i - The index of the dimension.

Returns:

The number of grid points in dimension i.

getLengths

public int[] getLengths()

Description copied from interface: GriddedSetIface

Returns the number of grid points in all dimensions.

Specified by:

getLengths in interface GriddedSetIface

Returns:

The number of grid points in all dimensions. Element [i] is the number of grid points in dimension i.

getWedge

public int[] getWedge()

returns a zig-zagging ennumeration of index values with good coherence

Specified by:

getWedge in interface SetIface

Overrides:

getWedge in class Set

Returns:

Indices of the samples of the set in a zig- zagging pattern with good coherence.

indexToValue

public float[][] indexToValue(int[] index)
                       throws VisADException

convert an array of 1-D indices to an array of values in R^DomainDimension

Specified by:

indexToValue in interface SetIface

Specified by:

indexToValue in class Set

Parameters:

index - array of integer indices

Returns:

float[domain_dimension][indices.length] array of Set values

Throws:

VisADException - a VisAD error occurred

valueToIndex

public int[] valueToIndex(float[][] value)
                   throws VisADException

convert an array of values in R^DomainDimension to an array of 1-D indices

Specified by:

valueToIndex in interface SetIface

Specified by:

valueToIndex in class Set

Parameters:

value - float[domain_dimension][number_of_values] array of Set values

Returns:

array of integer indices

Throws:

VisADException - a VisAD error occurred

gridToValue

public float[][] gridToValue(float[][] grid)
                      throws VisADException

transform an array of non-integer grid coordinates to an array of values in R^DomainDimension

Specified by:

gridToValue in interface GriddedSetIface

Parameters:

grid - The coordinates of the interpolation grid points for which interpolated sample values are desired. grid[i][j] is the i-th grid coordinate of the j-th interpolation point.

Returns:

The interpolated samples of the set. Element [i][j] is the i-th coordinate of the j-th interpolation point.

Throws:

VisADException - VisAD failure.

valueToGrid

public float[][] valueToGrid(float[][] value,
                             int[] guess)
                      throws VisADException

Transform an array of values in R^DomainDimension to an array of non-integer grid coordinates. A guess for for the first value may be supplied: useful when making repeated calls with one value on this set if the resulting grid coords are in proximity with one another. The last determined grid location becomes the guess.

Throws:

VisADException

valueToGrid

public float[][] valueToGrid(float[][] value)
                      throws VisADException

transform an array of values in R^DomainDimension to an array of non-integer grid coordinates

Specified by:

valueToGrid in interface GriddedSetIface

Parameters:

value - The array of points for which non-integer grid coordinates are desired. value[i][j] is the i-th coordinate of the j-th point.

Returns:

The array of grid coordinates corresponding to the points. Element [i][j] is the i-th non-integer grid coordinate of the j-th point.

Throws:

VisADException - VisAD failure.

valueToInterp

public void valueToInterp(float[][] value,
                          int[][] indices,
                          float[][] weights)
                   throws VisADException

for each of an array of values in R^DomainDimension, compute an array of 1-D indices and an array of weights, to be used for interpolation; indices[i] and weights[i] are null if i-th value is outside grid (i.e., if no interpolation is possible) A guess for the first value may be supplied

Specified by:

valueToInterp in interface SimpleSetIface

Specified by:

valueToInterp in class SimpleSet

Parameters:

value - An array of points. value[i][j] is the i-th coordinate of the j-th points.

indices - Indices of the neighboring samples in the set. If the j-th points lies within the set, then returned element [i][j] is the index of the i-th neighboring sample in the set; otherwise, returned array [j] is null.

weights - Weights for interpolating the neighboring samples in the set. If the j-th points lies within the set, then returned element [i][j] is the weight of the i-th neighboring sample in the set; otherwise, returned array [j] is null.

Throws:

VisADException - VisAD failure.

valueToInterp

public void valueToInterp(float[][] value,
                          int[][] indices,
                          float[][] weights,
                          int[] guess)
                   throws VisADException

Throws:

VisADException

getNeighbors

public void getNeighbors(int[][] neighbors)
                  throws VisADException

Returns the indexes of the neighboring points for every point in the set. neighbors.length should be at least getLength(). On return, neighbors[i][j] will be the index of the j -th neighboring point of point i. This method will allocate and set the array neighbors[i] for all i. For points in the interior of the set, the number of neighboring points is equal to 2*getManifoldDimension(). The number of neighboring points decreases, however, if the point in question is an exterior point on a hyperface, hyperedge, or hypercorner.

Specified by:

getNeighbors in interface SetIface

Overrides:

getNeighbors in class Set

Parameters:

neighbors - The array to contain the indexes of the neighboring points.

Throws:

java.lang.NullPointerException - if the array is null.

java.lang.ArrayIndexOutOfBoundsException - if neighbors.length < getLength() .

VisADException - if a VisAD failure occurs.

getNeighbors

public int[][] getNeighbors(int manifoldIndex)

Returns the indexes of the neighboring points along a manifold dimesion for every point in the set. Elements [i][0] and [i][1] of the returned array are the indexes of the neighboring sample points in the direction of decreasing and increasing manifold index, respectively, for sample point i. If a sample point doesn't have a neighboring point (because it is an exterior point, for example) then the value of the corresponding index will be -1.

Specified by:

getNeighbors in interface SetIface

Overrides:

getNeighbors in class Set

Parameters:

manifoldIndex - The index of the manifold dimension along which to return the neighboring points.

Throws:

java.lang.ArrayIndexOutOfBoundsException - if manifoldIndex < 0 || manifoldIndex >= getManifoldDimension() .

See Also:

SimpleSet.getManifoldDimension()

equals

public boolean equals(java.lang.Object set)

Description copied from class: Set

test for equality

Specified by:

equals in interface SetIface

Specified by:

equals in class Set

hashCode

public int hashCode()

Returns the hash code of this instance. Object.hashCode() should be overridden whenever Object.equals(Object) is.

Overrides:

hashCode in class java.lang.Object

Returns:

The hash code of this instance (includes the values).

cloneButType

public java.lang.Object cloneButType(MathType type)
                              throws VisADException

Description copied from class: Set

copy this Set, but give it a new MathType; this is safe, since constructor checks consistency of DomainCoordinateSystem and SetUnits with Type

Specified by:

cloneButType in interface SetIface

Specified by:

cloneButType in class Set

Parameters:

type - The MathType for the clone.

Returns:

A clone of this set with the new MathType.

Throws:

VisADException - VisAD failure.

longString

public java.lang.String longString(java.lang.String pre)
                            throws VisADException

Specified by:

longString in interface Data

Overrides:

longString in class Set

Parameters:

pre - String added to start of each line

Returns:

a longer String than returned by toString(), indented by pre (a string of blanks)

Throws:

VisADException