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java.lang.Objectvisad.ThingImpl
visad.DataImpl
visad.Set
visad.SimpleSet
visad.SampledSet
visad.IrregularSet
visad.Irregular2DSet
public class Irregular2DSet
IrregularSet
for a finite number of samples of R.
NOTE: There is no Irregular2DSet
with a manifold dimension equal
to one. Use Gridded2DSet
with a manifold dimension equal to one
instead.
When you call an Irregular2DSet
constructor without a Delaunay
argument, the constructor uses the Delaunay.factory(float[][], boolean)
method to implictly compute a Delaunay triangulation. 3000 points is the
current break-point from Watson's algorithm to Clarkson's algorithm. So,
currently, at 3001 points you start using Clarkson's algorithm, which rounds
coordinates to integers. If your values are small enough that integer
rounding will merge some of them to the same value (and hence create
colinear or colocated points), there will be trouble. One approach is
to scale your coordinates up so integer rounding does not merge values.
Another is to ensure that you use Watson's algorithm by using new
DelaunayWatson(samples)
as the Delaunay
argument of the Irregular2DSet
constructor.
Nested Class Summary |
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Nested classes/interfaces inherited from class visad.DataImpl |
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DataImpl.Syncher |
Field Summary |
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Fields inherited from class visad.IrregularSet |
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Delan |
Fields inherited from interface visad.Data |
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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 | |
---|---|
Irregular2DSet(MathType type,
float[][] samples)
a 2-D irregular set with null errors, CoordinateSystem and Units are defaults from type; topology is computed by the constructor |
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Irregular2DSet(MathType type,
float[][] samples,
CoordinateSystem coord_sys,
Unit[] units,
ErrorEstimate[] errors,
Delaunay delan)
a 2-D irregular set; samples array is organized float[2][number_of_samples]; no geometric constraint on samples; if delan is non-null it defines the topology of samples (which must have manifold dimension 2), else the constructor computes a topology with manifold dimension 2; note that Gridded2DSet can be used for an irregular set with domain dimension 2 and manifold dimension 1; coordinate_system and units must be compatible with defaults for type, or may be null; errors may be null |
|
Irregular2DSet(MathType type,
float[][] samples,
CoordinateSystem coord_sys,
Unit[] units,
ErrorEstimate[] errors,
Delaunay delan,
boolean copy)
|
|
Irregular2DSet(MathType type,
float[][] samples,
int[] new2old,
int[] old2new)
shortcut constructor for constructing Irregular2DSet using sort from existing Irregular1DSet |
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Irregular2DSet(MathType type,
float[][] samples,
int[] new2old,
int[] old2new,
CoordinateSystem coord_sys,
Unit[] units,
ErrorEstimate[] errors)
complete constructor for constructing Irregular2DSet using sort from existing Irregular1DSet |
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Irregular2DSet(MathType type,
float[][] samples,
int[] new2old,
int[] old2new,
CoordinateSystem coord_sys,
Unit[] units,
ErrorEstimate[] errors,
boolean copy)
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Method Summary | |
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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 |
float[][] |
indexToValue(int[] index)
convert an array of 1-D indices to an array of values in R^DomainDimension |
static void |
main(String[] argv)
|
Set |
makeSpatial(SetType type,
float[][] samples)
|
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 no interpolation is possible |
int[] |
valueToTri(float[][] value)
valueToTri returns an array of containing triangles given an array of points in R^DomainDimension |
Methods inherited from class visad.IrregularSet |
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clone, equals, getNeighbors, longString |
Methods inherited from class visad.SampledSet |
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computeRanges, computeRanges, cram_missing, finalize, getHi, getLow, getMySamples, getNeighbors, getSamples, getSamples, isMissing, make1DGeometry, make3DGeometry, makePointGeometry, setCacheSizeThreshold, setGeometryArray, setGeometryArray, setMySamples |
Methods inherited from class visad.SimpleSet |
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getManifoldDimension |
Methods inherited from class visad.Set |
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__getitem__, __len__, addEqualsCache, addNotEqualsCache, copyDoubles, copyFloats, doubleToFloat, doubleToIndex, equalUnitAndCS, floatToDouble, getCoordinateSystem, getDimension, getDoubles, getDoubles, getLength, getNeighbors, getSetErrors, getSetUnits, getWedge, indexToDouble, longString, make2DGeometry, makeIsoLines, makeIsoSurface, merge1DSets, testEqualsCache, testNotEqualsCache, unary, unitAndCSHashCode |
Methods inherited from class visad.DataImpl |
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__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 |
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addReference, removeReference |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface visad.SetIface |
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doubleToIndex, equalUnitAndCS, getCoordinateSystem, getDimension, getDoubles, getDoubles, getLength, getManifoldDimension, getNeighbors, getSetErrors, getSetUnits, getWedge, indexToDouble, make2DGeometry, makeIsoLines, makeIsoSurface, merge1DSets |
Methods inherited from interface visad.Data |
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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, 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 |
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addReference, removeReference |
Constructor Detail |
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public Irregular2DSet(MathType type, float[][] samples) throws VisADException
VisADException
public Irregular2DSet(MathType type, float[][] samples, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors, Delaunay delan) throws VisADException
VisADException
public Irregular2DSet(MathType type, float[][] samples, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors, Delaunay delan, boolean copy) throws VisADException
VisADException
public Irregular2DSet(MathType type, float[][] samples, int[] new2old, int[] old2new) throws VisADException
VisADException
public Irregular2DSet(MathType type, float[][] samples, int[] new2old, int[] old2new, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors) throws VisADException
VisADException
public Irregular2DSet(MathType type, float[][] samples, int[] new2old, int[] old2new, CoordinateSystem coord_sys, Unit[] units, ErrorEstimate[] errors, boolean copy) throws VisADException
VisADException
Method Detail |
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public Set makeSpatial(SetType type, float[][] samples) throws VisADException
makeSpatial
in interface SetIface
makeSpatial
in class Set
VisADException
public float[][] indexToValue(int[] index) throws VisADException
indexToValue
in interface SetIface
indexToValue
in class IrregularSet
index
- array of integer indices
VisADException
- a VisAD error occurredpublic int[] valueToTri(float[][] value) throws VisADException
VisADException
public int[] valueToIndex(float[][] value) throws VisADException
valueToIndex
in interface SetIface
valueToIndex
in class IrregularSet
value
- float[domain_dimension][number_of_values] array of
Set values
VisADException
- a VisAD error occurredpublic void valueToInterp(float[][] value, int[][] indices, float[][] weights) throws VisADException
valueToInterp
in interface SimpleSetIface
valueToInterp
in class IrregularSet
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
.
VisADException
- VisAD failure.public Object cloneButType(MathType type) throws VisADException
Set
cloneButType
in interface SetIface
cloneButType
in class IrregularSet
type
- The MathType for the clone.
VisADException
- VisAD failure.public static void main(String[] argv) throws VisADException
VisADException
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