FlatField

Documentation of 'visad.FlatField' Java class FlatField

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Field |
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Method

Detail:
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Constr |
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java.lang.Object
- visad.ThingImpl
- - visad.DataImpl
  - - visad.FunctionImpl
    - - visad.FieldImpl
      - visad.FlatField

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Data, Field, FlatFieldIface, Function, Thing

Direct Known Subclasses:

CachedFlatField, FileFlatField, ImageFlatField, JamaMatrix, SingleBandedImageImpl, Sounding, Spectrum
```
public class FlatField
extends FieldImpl
implements FlatFieldIface
```
FlatField is the VisAD class for finite samplings of functions whose range type and range coordinate systems are simple enough to allow efficient representation. The DomainSet, DomainCoordinateSystem, RangeSet, RangeCoordinateSystem and RangeCoordinateSystems variables of FlatField are immutable.
A FlatField range type may be either a RealType (for a function with range = R), a RealTupleType (for a function with range = R^n for n > 0), or a TupleType of RealType-s and RealTupleType-s..
VisAD avoids invoking methods once per datum through the use of FlatField's. These are logically Field's of Tuple's of RealType's and RealTupleType's. Internally FlatField's are stored as arrays of numerical values, rather than the arrays of data objects stored in Field's. Many of the methods in the FlatField class and in other classes (e.g., CoordinateTransform, Set, Unit) process data in the form double[Dimension][Length] where Length is the number of samples in a Field and Dimension is the number of Tuple elements in the Field range values. Note that the order of the Length and Dimension indices are reversed as array indices. This allows efficient processing of long columns of Field value components. For example, if Latitude is one component of Field values, then any computation involving Latitude can be applied in a tight loop to all Latitude's in the Field.
FlatField's support range types more general than RealTuple's. To understand the motive, consider a set of observations that include Latitude, Longitude, Altitude, Pressure, Temperature, etc. We can organize these as a Field whose range values have the Tuple type:
```
     (Latitude, Longitude, Altitude, Pressure, Temperature, ...)
```
However, in order to declare that (Latitude, Longitude, Altitude) is a coordinate system with coordinate transform functions to other spatial coordinate systems, we need to organize:
```
     (Latitude, Longitude, Altitude)
```
as a RealTupleType. Hence the range type of the Field of observations must be:
```
     ((Latitude, Longitude, Altitude), Pressure, Temperature, ...)
```
which is not a RealTupleType (since one of its components is a RealTupleType). In order to process such data efficiently, FlatField's must support range types that are Tuple's of RealType's and RealTupleType's.
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
`FlatField(FunctionType type)` Constructs a FlatField from a function type.
`FlatField(FunctionType type, Set domain_set)` Constructs a FlatField from a function type and a (non-default) domain Set.
`FlatField(FunctionType type, Set domain_set, CoordinateSystem[] range_coord_syses, Set[] range_sets, Unit[] units)` Constructs a FlatField from a function type, a sampling set of the domain, coordinate systems for the range components, sampling sets for the range components, and units for the range components.
`FlatField(FunctionType type, Set domain_set, CoordinateSystem range_coord_sys, CoordinateSystem[] range_coord_syses, Set[] range_sets, Unit[] units)` Constructs a FlatField from a function type, a sampling set of the domain, a coordinate system for the range, coordinate systems for the range components, sampling sets for the range components, and units for the range components.
`FlatField(FunctionType type, Set domain_set, CoordinateSystem range_coord_sys, Set[] range_sets, Unit[] units)` Constructs a FlatField from a function type, a sampling set of the domain, a coordinate system for the range, sampling sets for the range components, and units for the range components.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Data`	`adjustSamplingError(Data error, int error_mode)` return a FlatField that clones this, except its ErrorEstimate-s are adjusted for sampling errors in error
`Data`	`binary(Data data, int op, MathType new_type, int sampling_mode, int error_mode)` Return new Field with value 'this op data'.
`void`	`clearMissing()` Mark this FlatField as non-missing
`java.lang.Object`	`clone()` Clones this instance.
`DataShadow`	`computeRanges(ShadowType type, DataShadow shadow)` Recursive version of computeRanges(), called down through Data object tree.
`Field`	`convertToField()` convert this FlatField to a (non-Flat) FieldImpl
`Data`	`derivative(int error_mode)` return the tuple of derivatives of this Function with respect to all RealType components of its domain RealTuple; propogate errors according to error_mode
`Data`	`derivative(MathType[] derivType_s, int error_mode)` return the tuple of derivatives of this Function with respect to all RealType components of its domain RealTuple; set result MathTypes of tuple components to derivType_s; propogate errors according to error_mode
`Data`	`derivative(RealTuple location, RealType[] d_partial_s, MathType[] derivType_s, int error_mode)` return the tuple of derivatives of this Function with respect to the RealTypes in d_partial_s; the RealTypes in d_partial_s may occur in this Function's domain RealTupleType, or, if the domain has a CoordinateSystem, in its Reference RealTupleType; set result MathTypes of tuple components to derivType_s; propogate errors according to error_mode
`Function`	`derivative(RealType d_partial, int error_mode)` return the derivative of this Function with respect to d_partial; d_partial may occur in this Function's domain RealTupleType, or, if the domain has a CoordinateSystem, in its Reference RealTupleType; propogate errors according to error_mode
`Function`	`derivative(RealType d_partial, MathType derivType, int error_mode)` return the derivative of this Function with respect to d_partial; set result MathType to derivType; d_partial may occur in this Function's domain RealTupleType, or, if the domain has a CoordinateSystem, in its Reference RealTupleType; propogate errors according to error_mode
`boolean`	`equals(java.lang.Object obj)`
`Field`	`extract(int component)` extract field from this[].component; this is OK, when we get around to it
`Field`	`extract(int component, boolean copy)` extract field from this[].component; this is OK, when we get around to it
`static void`	`fillField(FlatField image, double step, double half)`
`Unit[]`	`getDefaultRangeUnits()` Get default range Unit-s for 'Flat' components.
`float[][]`	`getFloats()` Returns the range values in their default units as floats.
`float[][]`	`getFloats(boolean copy)` Returns the range values in their default units as floats.
`CoordinateSystem[]`	`getRangeCoordinateSystem()` Returns the range CoordinateSystem assuming that the range type is a RealTupleType (and throws a TypeException if its not).
`CoordinateSystem[]`	`getRangeCoordinateSystem(int i)` Returns the CoordinateSystem of a component of the range.
`int`	`getRangeDimension()` Gets the number of components in the "flat" range.
`ErrorEstimate[]`	`getRangeErrors()` return array of ErrorEstimates associated with each RealType component of range; each ErrorEstimate is a mean error for all samples of a range RealType component
`Set[]`	`getRangeSets()` Returns the sampling set of each flat component.
`Unit[][]`	`getRangeUnits()` return array of Units associated with each RealType component of range; these may differ from default Units of range RealTypes, but must be convertable; the second index has length = 1 (since all samples have the same Units)
`Data`	`getSample(int index)` Get the range value at the index-th sample.
`Data`	`getSample(int index, boolean metadataOnly)` A stub routine which simply invokes `getSample` to override `FieldImpl.getSample`
`java.lang.String[][]`	`getStringValues()` Get String values for Text components
`double[][]`	`getValues()` Returns the range values in their default units as doubles.
`double[][]`	`getValues(boolean copy)` Returns the range values in their default units as doubles.
`double[]`	`getValues(int s_index)` Get values for 'Flat' components in default range Unit-s.
`byte[][]`	`grabBytes()`
`boolean`	`isFlatField()` return true if this a FlatField or a RemoteField adapting a FlatField
`boolean`	`isMissing()` Test whether range values are missing
`java.lang.String`	`longString(java.lang.String pre)`
`static void`	`main(java.lang.String[] args)` run 'java visad.FlatField' to test the FlatField class
`static FlatField`	`makeField(FunctionType type, int length, boolean irregular)` construct a FlatField of given type; used for testing
`static FlatField`	`makeField1(FunctionType type, double first1, double last1, int length1, double first2, double last2, int length2)` construct a FlatField with a 2-D domain and a 1-D range; used for testing
`static FlatField`	`makeField2(FunctionType type, double first1, double last1, int length1, double first2, double last2, int length2)` construct a FlatField with a 2-D domain and a 2-D range; used for testing
`Field`	`resample(Set set, int sampling_mode, int error_mode)` Resamples the range to domain samples of a given set.
`Field`	`resampleDouble(Set set, int sampling_mode, int error_mode)` Resamples the range to domain samples of a given double set.
`void`	`setRangeErrors(ErrorEstimate[] errors)` Sets the ErrorEstimates associated with each RealType component of the range.
`void`	`setSample(int index, Data range)` Set the range value at the index-th sample
`void`	`setSample(int index, Data range, boolean copy)` Set the range value at the index-th sample
`void`	`setSamples(Data[] range, boolean copy)` set the range values of the function; the order of range values must be the same as the order of domain indices in the DomainSet; copy argument included for consistency with Field, but ignored
`void`	`setSamples(double[][] range)` set range array as range values of this FlatField; the array is dimensioned double[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet
`void`	`setSamples(double[][] range, boolean copy)` set range array as range values of this FlatField; the array is dimensioned double[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet; copy array if copy flag is true
`void`	`setSamples(double[][] range, ErrorEstimate[] errors, boolean copy)` set the range values of the function including ErrorEstimate-s; the order of range values must be the same as the order of domain indices in the DomainSet
`void`	`setSamples(float[][] range)` set range array as range values of this FlatField; the array is dimensioned float[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet
`void`	`setSamples(float[][] range, boolean copy)` set range array as range values of this FlatField; the array is dimensioned float[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet; copy array if copy flag is true
`void`	`setSamples(float[][] range, ErrorEstimate[] errors, boolean copy)` set the range values of the function including ErrorEstimate-s; the order of range values must be the same as the order of domain indices in the DomainSet
`void`	`setSamples(int[] indices, double[][] range)`
`void`	`setSamples(int start, double[][] range)` update a subset of a FlatField's range samples, where start is the index of the first sample to update and range[0].length is the number of samples to update; the array is dimensioned double[number_of_range_components][number_of_range_samples]
`java.lang.String`	`toString()`
`Data`	`unary(int op, MathType new_type, int sampling_mode, int error_mode)` Return new FlatField with value 'this op'.
`float[][]`	`unpackFloats()` unpack an array of floats from field sample values according to the RangeSet-s; returns a copy
`double[][]`	`unpackValues()` unpack an array of doubles from field sample values according to the RangeSet-s; returns a copy

Methods inherited from class visad.FieldImpl
__getitem__, __len__, __setitem__, __setitem__, combine, combine, combine, combine, combine, domainEnumeration, domainFactor, domainFactor, domainMultiply, domainMultiply, domainMultiply, domainMultiply, extract, extract, getDomainCoordinateSystem, getDomainSet, getDomainUnits, getLength, setSample, setSample, setSample, setSamples

Methods inherited from class visad.FunctionImpl
__getitem__, __getitem__, evaluate, evaluate, evaluate, evaluate, getDomainDimension, resample

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, asin, asin, asinDegrees, asinDegrees, atan, atan, atan2, atan2, atan2Degrees, atan2Degrees, atanDegrees, atanDegrees, 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, notifyReferences, pow, pow, remainder, remainder, rint, rint, round, round, sin, sin, sinDegrees, sinDegrees, sqrt, sqrt, subtract, subtract, tan, tan, tanDegrees, tanDegrees, unary

Methods inherited from class visad.ThingImpl
addReference, removeReference

Methods inherited from class java.lang.Object
getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface visad.Field
domainEnumeration, domainFactor, domainMultiply, domainMultiply, getDomainSet, getLength, setSample, setSample

Methods inherited from interface visad.Function
evaluate, evaluate, evaluate, evaluate, getDomainCoordinateSystem, getDomainDimension, getDomainUnits, resample

Methods inherited from interface visad.Data
abs, abs, acos, acos, acosDegrees, acosDegrees, add, add, asin, asin, asinDegrees, asinDegrees, atan, atan, atan2, atan2, atan2Degrees, atan2Degrees, atanDegrees, atanDegrees, 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

Methods inherited from interface visad.Thing
addReference, removeReference

- Constructor Detail
  - FlatField
```
public FlatField(FunctionType type)
          throws VisADException
```
    Constructs a FlatField from a function type. The domain Set is the default Set of the function domain.
    
    Parameters:
    
    type - The type of the function.
    
    Throws:
    
    VisADException - Couldn't create necessary VisAD object.
  - FlatField
```
public FlatField(FunctionType type,
                 Set domain_set)
          throws VisADException
```
    Constructs a FlatField from a function type and a (non-default) domain Set.
    
    Parameters:
    
    type - The type of the function.
    
    domain_set - The sampling set of the domain. May be null, in which case the sampling set is the default Set of the function domain.
    
    Throws:
    
    VisADException - Couldn't create necessary VisAD object.
  - FlatField
```
public FlatField(FunctionType type,
                 Set domain_set,
                 CoordinateSystem range_coord_sys,
                 Set[] range_sets,
                 Unit[] units)
          throws VisADException
```
    Constructs a FlatField from a function type, a sampling set of the domain, a coordinate system for the range, sampling sets for the range components, and units for the range components.
    
    Parameters:
    
    type - The type of the function.
    
    domain_set - The sampling set of the domain. May be null, in which case the sampling set is set to the default sampling set of the function domain (i.e. type.getDomain().getDefaultSet()).
    
    range_coord_sys - Optional coordinate system for the range. May be null. If non-null, then the range of the function shall be a RealTuple (i.e. type.getRange() instanceof RealTuple shall be true) and the reference coordinate system of the range coordinate system shall be the same as the reference coordiinate system of the function range (i.e. range_coord_sys().getReference().equals( ((RealTuple)type.getRange()).getReference()) shall be true).
    
    range_sets - The sampling sets of the (flat) range components. May be null, in which case the default sampling sets of the range component RealType-s are used (i.e. ((RealType)type.getFlatRange().getComponent(i)) .getDefaultSet() for all i in the flat range). If non-null, then the ith flat range component values are stored in bytes if range_sets[i].getLength() < 256, stored in shorts if range_sets[i].getLength() < 65536, etc.
    
    units - The units of the (flat) range components. May be null, in which case the default units of the flat range RealType-s are used.
    
    Throws:
    
    VisADException - Couldn't create necessary VisAD object.
  - FlatField
```
public FlatField(FunctionType type,
                 Set domain_set,
                 CoordinateSystem[] range_coord_syses,
                 Set[] range_sets,
                 Unit[] units)
          throws VisADException
```
    Constructs a FlatField from a function type, a sampling set of the domain, coordinate systems for the range components, sampling sets for the range components, and units for the range components.
    
    Parameters:
    
    type - The type of the function.
    
    domain_set - The sampling set of the domain. May be null, in which case the sampling set is set to the default sampling set of the function domain (i.e. type.getDomain().getDefaultSet()).
    
    range_coord_syses - Optional coordinate systems for the range components. May be null. If the ith component of the range is a RealTuple, then range_coord_syses[i] may be non-null and, if so, is the coordinate system for that component and shall have the same reference coordinate system as the corresponding component in the range of the function type.
    
    range_sets - The sampling sets of the (flat) range components. May be null, in which case the default sampling sets of the range component RealType-s are used (i.e. ((RealType)type.getFlatRange().getComponent(i)) .getDefaultSet() for all i in the flat range). If non-null, then the ith flat range component values are stored in bytes if range_sets[i].getLength() < 256, stored in shorts if range_sets[i].getLength() < 65536, etc.
    
    units - The units of the (flat) range components. May be null, in which case the default units of the flat range RealType-s are used.
    
    Throws:
    
    VisADException - Couldn't create necessary VisAD object.
  - FlatField
```
public FlatField(FunctionType type,
                 Set domain_set,
                 CoordinateSystem range_coord_sys,
                 CoordinateSystem[] range_coord_syses,
                 Set[] range_sets,
                 Unit[] units)
          throws VisADException
```
    Constructs a FlatField from a function type, a sampling set of the domain, a coordinate system for the range, coordinate systems for the range components, sampling sets for the range components, and units for the range components. This is the most general constructor.
    
    Parameters:
    
    type - The type of the function.
    
    domain_set - The sampling set of the domain. May be null, in which case the sampling set is set to the default sampling set of the function domain (i.e. type.getDomain().getDefaultSet()).
    
    range_coord_sys - Optional coordinate system for the range. May be null. If non-null, then the range of the function shall be a RealTuple (i.e. type.getRange() instanceof RealTuple shall be true) and the reference coordinate system of the range coordinate system shall be the same as the reference coordiinate system of the function range (i.e. range_coord_sys().getReference().equals( ((RealTuple)type.getRange()).getReference()) shall be true).
    
    range_coord_syses - Optional coordinate systems for the range components. May be null. If the ith component of the range is a RealTuple, then range_coord_syses[i] may be non-null and, if so, is the coordinate system for that component and shall have the same reference coordinate system as the corresponding component in the range of the function type.
    
    range_sets - The sampling sets of the (flat) range components. May be null, in which case the default sampling sets of the range component RealType-s are used (i.e. ((RealType)type.getFlatRange().getComponent(i)) .getDefaultSet() for all i in the flat range). If non-null, then the ith flat range component values are stored in bytes if range_sets[i].getLength() < 256, stored in shorts if range_sets[i].getLength() < 65536, etc.
    
    units - The units of the (flat) range components. May be null, in which case the default units of the flat range RealType-s are used.
    
    Throws:
    
    SetException - if range_sets is non-null and either one of its elements is null or an element's dimension is not one.
    
    VisADException - Couldn't create necessary VisAD object.
- Method Detail
  - getRangeCoordinateSystem
```
public CoordinateSystem[] getRangeCoordinateSystem()
                                            throws TypeException
```
    Returns the range CoordinateSystem assuming that the range type is a RealTupleType (and throws a TypeException if its not). This may differ from default CoordinateSystem of range RealTupleType, but must be convertable; the index has length = 1 (since all samples have the same Units).
    
    Specified by:
    
    getRangeCoordinateSystem in interface Field
    
    Overrides:
    
    getRangeCoordinateSystem in class FieldImpl
    
    Returns:
    
    The CoordinateSystem of the RealTuple range. Will not be null and will be of length 1.
    
    Throws:
    
    TypeException - The type of the range is neither RealType nor RealTupleType.
  - getRangeSets
```
public Set[] getRangeSets()
```
    Returns the sampling set of each flat component.
    
    Specified by:
    
    getRangeSets in interface FlatFieldIface
    
    Returns:
    
    The sampling set of each component in the flat range.
  - getRangeCoordinateSystem
```
public CoordinateSystem[] getRangeCoordinateSystem(int i)
                                            throws TypeException
```
    Returns the CoordinateSystem of a component of the range. The MathType of the range shall be a TupleType.
    
    Specified by:
    
    getRangeCoordinateSystem in interface Field
    
    Overrides:
    
    getRangeCoordinateSystem in class FieldImpl
    
    Parameters:
    
    i - The index of the component. The value shall be greater than or equal to zero and less that the number of components in the TupleType of the range.
    
    Returns:
    
    The CoordinateSystem of the i-th component. Won't be null and will be of length 1. The single element might be null.
    
    Throws:
    
    TypeException - The type of the range is either RealType or RealTupleType.
  - getRangeUnits
```
public Unit[][] getRangeUnits()
```
    return array of Units associated with each RealType component of range; these may differ from default Units of range RealTypes, but must be convertable; the second index has length = 1 (since all samples have the same Units)
    
    Specified by:
    
    getRangeUnits in interface Field
    
    Overrides:
    
    getRangeUnits in class FieldImpl
  - getRangeErrors
```
public ErrorEstimate[] getRangeErrors()
```
    return array of ErrorEstimates associated with each RealType component of range; each ErrorEstimate is a mean error for all samples of a range RealType component
    
    Specified by:
    
    getRangeErrors in interface FlatFieldIface
  - setRangeErrors
```
public void setRangeErrors(ErrorEstimate[] errors)
                    throws FieldException
```
    Sets the ErrorEstimates associated with each RealType component of the range. errors[i] is the ErrorEstimate for the i-th RealType component.
    
    Specified by:
    
    setRangeErrors in interface FlatFieldIface
    
    Parameters:
    
    errors - The error estimates for the range values.
    
    Throws:
    
    FieldException - if errors is non-null and errors.length != getRangeDimension().
  - setSamples
```
public void setSamples(Data[] range,
                       boolean copy)
                throws VisADException,
                       java.rmi.RemoteException
```
    set the range values of the function; the order of range values must be the same as the order of domain indices in the DomainSet; copy argument included for consistency with Field, but ignored
    
    Specified by:
    
    setSamples in interface Field
    
    Overrides:
    
    setSamples in class FieldImpl
    
    Parameters:
    
    range - The range values
    
    copy - should the range values be copied
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(double[][] range)
                throws VisADException,
                       java.rmi.RemoteException
```
    set range array as range values of this FlatField; the array is dimensioned double[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet
    
    Specified by:
    
    setSamples in interface Field
    
    Overrides:
    
    setSamples in class FieldImpl
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(float[][] range)
                throws VisADException,
                       java.rmi.RemoteException
```
    set range array as range values of this FlatField; the array is dimensioned float[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet
    
    Specified by:
    
    setSamples in interface Field
    
    Overrides:
    
    setSamples in class FieldImpl
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(double[][] range,
                       boolean copy)
                throws VisADException,
                       java.rmi.RemoteException
```
    set range array as range values of this FlatField; the array is dimensioned double[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet; copy array if copy flag is true
    
    Specified by:
    
    setSamples in interface FlatFieldIface
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(float[][] range,
                       boolean copy)
                throws VisADException,
                       java.rmi.RemoteException
```
    set range array as range values of this FlatField; the array is dimensioned float[number_of_range_components][number_of_range_samples]; the order of range values must be the same as the order of domain indices in the DomainSet; copy array if copy flag is true
    
    Specified by:
    
    setSamples in interface FlatFieldIface
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(double[][] range,
                       ErrorEstimate[] errors,
                       boolean copy)
                throws VisADException,
                       java.rmi.RemoteException
```
    set the range values of the function including ErrorEstimate-s; the order of range values must be the same as the order of domain indices in the DomainSet
    
    Specified by:
    
    setSamples in interface FlatFieldIface
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(int start,
                       double[][] range)
                throws VisADException,
                       java.rmi.RemoteException
```
    update a subset of a FlatField's range samples, where start is the index of the first sample to update and range[0].length is the number of samples to update; the array is dimensioned double[number_of_range_components][number_of_range_samples]
    
    Specified by:
    
    setSamples in interface FlatFieldIface
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(int[] indices,
                       double[][] range)
                throws VisADException,
                       java.rmi.RemoteException
```
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - setSamples
```
public void setSamples(float[][] range,
                       ErrorEstimate[] errors,
                       boolean copy)
                throws VisADException,
                       java.rmi.RemoteException
```
    set the range values of the function including ErrorEstimate-s; the order of range values must be the same as the order of domain indices in the DomainSet
    
    Specified by:
    
    setSamples in interface FlatFieldIface
    
    Throws:
    
    VisADException
    
    java.rmi.RemoteException
  - grabBytes
```
public byte[][] grabBytes()
```
    Specified by:
    
    grabBytes in interface FlatFieldIface
  - unpackValues
```
public double[][] unpackValues()
                        throws VisADException
```
    unpack an array of doubles from field sample values according to the RangeSet-s; returns a copy
    
    Throws:
    
    VisADException
  - unpackFloats
```
public float[][] unpackFloats()
                       throws VisADException
```
    unpack an array of floats from field sample values according to the RangeSet-s; returns a copy
    
    Throws:
    
    VisADException
  - getFloats
```
public float[][] getFloats()
                    throws VisADException
```
    Returns the range values in their default units as floats.
    
    Specified by:
    
    getFloats in interface Field
    
    Overrides:
    
    getFloats in class FieldImpl
    
    Returns:
    
    The range values in their default units as determined by the MathType of the range. Element [i][j] is the jth sample value of the ith component of the range.
    
    Throws:
    
    VisADException - if a VisAD object couldn't be created.
  - getFloats
```
public float[][] getFloats(boolean copy)
                    throws VisADException
```
    Returns the range values in their default units as floats.
    
    Specified by:
    
    getFloats in interface Field
    
    Overrides:
    
    getFloats in class FieldImpl
    
    Parameters:
    
    copy - Whether or not the returned array might be the actual range array. If true, then the returned array will not be the actual range array.
    
    Returns:
    
    The range values in their default units as determined by the MathType of the range. Element [i][j] is the jth sample value of the ith component of the range.
    
    Throws:
    
    VisADException - if a VisAD object couldn't be created.
  - getValues
```
public double[][] getValues()
                     throws VisADException
```
    Returns the range values in their default units as doubles.
    
    Specified by:
    
    getValues in interface Field
    
    Overrides:
    
    getValues in class FieldImpl
    
    Returns:
    
    The range values in their default units as determined by the MathType of the range. Element [i][j] is the jth sample value of the ith component of the range.
    
    Throws:
    
    VisADException - if a VisAD object couldn't be created.
  - getValues
```
public double[][] getValues(boolean copy)
                     throws VisADException
```
    Returns the range values in their default units as doubles.
    
    Specified by:
    
    getValues in interface Field
    
    Overrides:
    
    getValues in class FieldImpl
    
    Parameters:
    
    copy - Whether or not the returned array might be the actual range array. If true, then the returned array will not be the actual range array.
    
    Returns:
    
    The range values in their default units as determined by the MathType of the range. Element [i][j] is the jth sample value of the ith component of the range.
    
    Throws:
    
    VisADException - if a VisAD object couldn't be created.
  - getStringValues
```
public java.lang.String[][] getStringValues()
                                     throws VisADException,
                                            java.rmi.RemoteException
```
    Get String values for Text components
    
    Specified by:
    
    getStringValues in interface Field
    
    Overrides:
    
    getStringValues in class FieldImpl
    
    Returns:
    
    null (there are none for FlatFields)
    
    Throws:
    
    VisADException - but doesn't happen
    
    java.rmi.RemoteException - but doesn't happen
  - getValues
```
public double[] getValues(int s_index)
                   throws VisADException
```
    Get values for 'Flat' components in default range Unit-s.
    
    Specified by:
    
    getValues in interface FlatFieldIface
    
    Returns:
    
    The range values in their default units as determined by the MathType of the range. Element [i] is the value of the ith component of the flattened range.
    
    Throws:
    
    VisADException - if a VisAD object couldn't be created.
  - getDefaultRangeUnits
```
public Unit[] getDefaultRangeUnits()
```
    Get default range Unit-s for 'Flat' components.
    
    Specified by:
    
    getDefaultRangeUnits in interface Field
    
    Overrides:
    
    getDefaultRangeUnits in class FieldImpl
    
    Returns:
    
    array of the default Units for each of the RealTypes components in the flattened range.
  - getSample
```
public Data getSample(int index)
               throws VisADException,
                      java.rmi.RemoteException
```
    Get the range value at the index-th sample. FlatField does not override evaluate, but the correctness of FlatField.evaluate depends on overriding getSample
    
    Specified by:
    
    getSample in interface Field
    
    Overrides:
    
    getSample in class FieldImpl
    
    Parameters:
    
    index - index of requested range sample
    
    Returns:
    
    Data object (Real, RealTuple, or Tuple) corresponding to the range at the index-th sample.
    
    Throws:
    
    VisADException - problem getting data
    
    java.rmi.RemoteException - problem getting data from remote object
  - getSample
```
public Data getSample(int index,
                      boolean metadataOnly)
               throws VisADException,
                      java.rmi.RemoteException
```
    A stub routine which simply invokes getSample to override FieldImpl.getSample
    
    Overrides:
    
    getSample in class FieldImpl
    
    Parameters:
    
    index - index of requested range sample
    
    metadataOnly - true if only the metadata is needed, false if both metadata and data are desired.
    Throws: VisADException - if a VisAD object couldn't be created. java.rmi.RemoteException - if the Remote object couldn't be created.
  setSample public void setSample(int index, Data range, boolean copy) throws VisADException, java.rmi.RemoteException Set the range value at the index-th sample Specified by: setSample in interface Field Overrides: setSample in class FieldImpl Parameters: index - index to set range - range value to set copy - flag to copy values - meaningless for FlatField Throws: VisADException - if range's MathType is incompatible or some other error. java.rmi.RemoteException - if the Remote object couldn't be created. setSample public void setSample(int index, Data range) throws VisADException, java.rmi.RemoteException Set the range value at the index-th sample Specified by: setSample in interface Field Overrides: setSample in class FieldImpl Parameters: index - index to set range - range value to set Throws: VisADException - if range's MathType is incompatible or some other error. java.rmi.RemoteException - if the Remote object couldn't be created. isMissing public boolean isMissing() Test whether range values are missing Specified by: isMissing in interface Data Overrides: isMissing in class FieldImpl Returns: true if the range values have not been set clearMissing public void clearMissing() Mark this FlatField as non-missing Specified by: clearMissing in interface FlatFieldIface binary public Data binary(Data data, int op, MathType new_type, int sampling_mode, int error_mode) throws VisADException, java.rmi.RemoteException Return new Field with value 'this op data'. test for various relations between types of this and data; note return type may not be FlatField, in case data is a Field and this matches its range Specified by: binary in interface Data Overrides: binary in class FieldImpl Parameters: data - object to operate on op - operation to perform (e.g. ADD, SUB, MULT) new_type - MathType of new object sampling_mode - sampling mode to use (e.g., NEAREST_NEIGHBOR, WEIGHTED_AVERAGE) error_mode - error estimate mode (e.g., NO_ERROR, DEPENDENT, independent) Returns: new Field corresponding to the requested operation Throws: VisADException - couldn't create new VisAD object java.rmi.RemoteException - couldn't create new Remote object unary public Data unary(int op, MathType new_type, int sampling_mode, int error_mode) throws VisADException Return new FlatField with value 'this op'. Specified by: unary in interface Data Overrides: unary in class FieldImpl Parameters: op - operation to perform (e.g., NOP, ABS, COS) new_type - MathType of new object sampling_mode - sampling mode to use (e.g., NEAREST_NEIGHBOR, WEIGHTED_AVERAGE) error_mode - error estimate mode (e.g., NO_ERROR, DEPENDENT, independent) Returns: new FlatField corresponding to the requested operation Throws: VisADException - couldn't create new VisAD object java.rmi.RemoteException - couldn't create new Remote object extract public Field extract(int component) throws VisADException, java.rmi.RemoteException extract field from this[].component; this is OK, when we get around to it Specified by: extract in interface Field Overrides: extract in class FieldImpl Throws: VisADException java.rmi.RemoteException extract public Field extract(int component, boolean copy) throws VisADException, java.rmi.RemoteException extract field from this[].component; this is OK, when we get around to it Throws: VisADException java.rmi.RemoteException derivative public Data derivative(RealTuple location, RealType[] d_partial_s, MathType[] derivType_s, int error_mode) throws VisADException, java.rmi.RemoteException Description copied from interface: Function return the tuple of derivatives of this Function with respect to the RealTypes in d_partial_s; the RealTypes in d_partial_s may occur in this Function's domain RealTupleType, or, if the domain has a CoordinateSystem, in its Reference RealTupleType; set result MathTypes of tuple components to derivType_s; propogate errors according to error_mode Specified by: derivative in interface Function Overrides: derivative in class FieldImpl Throws: VisADException java.rmi.RemoteException derivative public Data derivative(int error_mode) throws VisADException, java.rmi.RemoteException Description copied from interface: Function return the tuple of derivatives of this Function with respect to all RealType components of its domain RealTuple; propogate errors according to error_mode Specified by: derivative in interface Function Overrides: derivative in class FieldImpl Throws: VisADException java.rmi.RemoteException derivative public Data derivative(MathType[] derivType_s, int error_mode) throws VisADException, java.rmi.RemoteException Description copied from interface: Function return the tuple of derivatives of this Function with respect to all RealType components of its domain RealTuple; set result MathTypes of tuple components to derivType_s; propogate errors according to error_mode Specified by: derivative in interface Function Overrides: derivative in class FieldImpl Throws: VisADException java.rmi.RemoteException derivative public Function derivative(RealType d_partial, int error_mode) throws VisADException, java.rmi.RemoteException Description copied from interface: Function return the derivative of this Function with respect to d_partial; d_partial may occur in this Function's domain RealTupleType, or, if the domain has a CoordinateSystem, in its Reference RealTupleType; propogate errors according to error_mode Specified by: derivative in interface Function Overrides: derivative in class FieldImpl Throws: VisADException java.rmi.RemoteException derivative public Function derivative(RealType d_partial, MathType derivType, int error_mode) throws VisADException, java.rmi.RemoteException Description copied from interface: Function return the derivative of this Function with respect to d_partial; set result MathType to derivType; d_partial may occur in this Function's domain RealTupleType, or, if the domain has a CoordinateSystem, in its Reference RealTupleType; propogate errors according to error_mode Specified by: derivative in interface Function Overrides: derivative in class FieldImpl Throws: VisADException java.rmi.RemoteException resample public Field resample(Set set, int sampling_mode, int error_mode) throws VisADException, java.rmi.RemoteException Resamples the range to domain samples of a given set. Resampling is either by nearest neighbor or mulit-linear interpolation. NOTE: This code is very similar to FieldImpl.resample(Set,int,int). Specified by: resample in interface Function Overrides: resample in class FieldImpl Parameters: set - The set of points at which to resample this field. sampling_mode - Resampling mode: Data.NEAREST_NEIGHBOR or Data.WEIGHTED_AVERAGE error_mode - Error estimation mode: Data.DEPENDENT, Data.INDEPENDENT, or Data.NO_ERRORS. Returns: Field of resampled data. RangeSet objects in result are set to DoubleSet. NOTE: May return this (i.e., not a copy). Throws: VisADException - unable to resample function java.rmi.RemoteException - Java RMI exception resampleDouble public Field resampleDouble(Set set, int sampling_mode, int error_mode) throws VisADException, java.rmi.RemoteException Resamples the range to domain samples of a given double set. Resampling is either by nearest neighbor or mulit-linear interpolation. NOTE: This code is very similar to FieldImpl.resample(Set,int,int). Overrides: resampleDouble in class FieldImpl Parameters: set - The set of points at which to resample this field. sampling_mode - Resampling mode: Data.NEAREST_NEIGHBOR or Data.WEIGHTED_AVERAGE error_mode - Error estimation mode: Data.DEPENDENT, Data.INDEPENDENT, or Data.NO_ERRORS. Returns: Field of resampled data. RangeSet objects in result are set to DoubleSet. NOTE: May return this (i.e., not a copy). Throws: VisADException - unable to resample function java.rmi.RemoteException - Java RMI exception convertToField public Field convertToField() throws VisADException, java.rmi.RemoteException convert this FlatField to a (non-Flat) FieldImpl Specified by: convertToField in interface FlatFieldIface Throws: VisADException java.rmi.RemoteException computeRanges public DataShadow computeRanges(ShadowType type, DataShadow shadow) throws VisADException Description copied from interface: Data Recursive version of computeRanges(), called down through Data object tree. Specified by: computeRanges in interface Data Overrides: computeRanges in class FieldImpl Parameters: type - ShadowType generated for MathType of this shadow - DataShadow instance whose contained double[][] array and animation sampling Set are modified according to RealType values in this, and used as return value Returns: DataShadow instance containing double[][] array of RealType ranges, and an animation sampling Set Throws: VisADException - a VisAD error occurred adjustSamplingError public Data adjustSamplingError(Data error, int error_mode) throws VisADException, java.rmi.RemoteException return a FlatField that clones this, except its ErrorEstimate-s are adjusted for sampling errors in error Specified by: adjustSamplingError in interface Data Overrides: adjustSamplingError in class FieldImpl error_mode - may be Data.INDEPENDENT, Data.DEPENDENT or Data.NO_ERRORS; Returns: clone of this, except with ErrorEstimates set according to values in error Throws: VisADException - a VisAD error occurred java.rmi.RemoteException - an RMI error occurred isFlatField public boolean isFlatField() Description copied from interface: Field return true if this a FlatField or a RemoteField adapting a FlatField Specified by: isFlatField in interface Field Overrides: isFlatField in class FieldImpl clone public java.lang.Object clone() Clones this instance. Immutable fields are shallow copied. Range values, however, are deep copied. Note that it is possible to simultaneously modify the domain-set of both this instance and the clone by modifying the values in the array returned by invoking getSamples(false) on the domain-set of either this instance or the clone. Don't do this unless you enjoy debugging. Overrides: clone in class FieldImpl Returns: A clone of this instance. Throws: java.lang.RuntimeException - if a VisADException occurs. toString public java.lang.String toString() Overrides: toString in class DataImpl Returns: a String representation of this longString public java.lang.String longString(java.lang.String pre) throws VisADException Specified by: longString in interface Data Overrides: longString in class FieldImpl 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 getRangeDimension public int getRangeDimension() Gets the number of components in the "flat" range. Specified by: getRangeDimension in interface FlatFieldIface Returns: The number of components in the "flat" range. equals public boolean equals(java.lang.Object obj) Overrides: equals in class FieldImpl makeField public static FlatField makeField(FunctionType type, int length, boolean irregular) throws VisADException, java.rmi.RemoteException construct a FlatField of given type; used for testing Throws: VisADException java.rmi.RemoteException fillField public static void fillField(FlatField image, double step, double half) throws VisADException, java.rmi.RemoteException Throws: VisADException java.rmi.RemoteException makeField1 public static FlatField makeField1(FunctionType type, double first1, double last1, int length1, double first2, double last2, int length2) throws VisADException, java.rmi.RemoteException construct a FlatField with a 2-D domain and a 1-D range; used for testing Throws: VisADException java.rmi.RemoteException makeField2 public static FlatField makeField2(FunctionType type, double first1, double last1, int length1, double first2, double last2, int length2) throws VisADException, java.rmi.RemoteException construct a FlatField with a 2-D domain and a 2-D range; used for testing Throws: VisADException java.rmi.RemoteException main public static void main(java.lang.String[] args) throws VisADException, java.rmi.RemoteException run 'java visad.FlatField' to test the FlatField class Throws: VisADException java.rmi.RemoteException

Class FlatField

Nested Class Summary

Nested classes/interfaces inherited from class visad.DataImpl

Field Summary

Fields inherited from interface visad.Data

Constructor Summary

Method Summary

Methods inherited from class visad.FieldImpl

Methods inherited from class visad.FunctionImpl

Methods inherited from class visad.DataImpl

Methods inherited from class visad.ThingImpl

Methods inherited from class java.lang.Object

Methods inherited from interface visad.Field

Methods inherited from interface visad.Function

Methods inherited from interface visad.Data

Methods inherited from interface visad.Thing

Constructor Detail

FlatField

FlatField

FlatField

FlatField

FlatField

Method Detail

getRangeCoordinateSystem

getRangeSets

getRangeCoordinateSystem

getRangeUnits

getRangeErrors

setRangeErrors

setSamples

setSamples

setSamples

setSamples

setSamples

setSamples

setSamples

setSamples

setSamples

grabBytes

unpackValues

unpackFloats

getFloats

getFloats

getValues

getValues

getStringValues

getValues

getDefaultRangeUnits

getSample

getSample

setSample

setSample

isMissing

clearMissing

binary

unary

extract

extract

derivative

derivative

derivative

derivative

derivative

resample

resampleDouble

convertToField

computeRanges

adjustSamplingError

isFlatField

clone

toString

longString

getRangeDimension

equals

makeField

fillField

makeField1

makeField2

main