org.apache.commons.math3.analysis.interpolation
Class MicrosphereInterpolator

java.lang.Object
  extended by org.apache.commons.math3.analysis.interpolation.MicrosphereInterpolator
All Implemented Interfaces:
MultivariateInterpolator

public class MicrosphereInterpolator
extends Object
implements MultivariateInterpolator

Interpolator that implements the algorithm described in William Dudziak's MS thesis.

Since:
2.1
Version:
$Id: MicrosphereInterpolator.java 1379904 2012-09-01 23:54:52Z erans $

Field Summary
static int DEFAULT_BRIGHTNESS_EXPONENT
          Default exponent used the weights calculation.
static int DEFAULT_MICROSPHERE_ELEMENTS
          Default number of surface elements that composes the microsphere.
 
Constructor Summary
MicrosphereInterpolator()
          Create a microsphere interpolator with default settings.
MicrosphereInterpolator(int elements, int exponent)
          Create a microsphere interpolator.
 
Method Summary
 MultivariateFunction interpolate(double[][] xval, double[] yval)
          Computes an interpolating function for the data set.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DEFAULT_MICROSPHERE_ELEMENTS

public static final int DEFAULT_MICROSPHERE_ELEMENTS
Default number of surface elements that composes the microsphere.

See Also:
Constant Field Values

DEFAULT_BRIGHTNESS_EXPONENT

public static final int DEFAULT_BRIGHTNESS_EXPONENT
Default exponent used the weights calculation.

See Also:
Constant Field Values
Constructor Detail

MicrosphereInterpolator

public MicrosphereInterpolator()
Create a microsphere interpolator with default settings. Calling this constructor is equivalent to call MicrosphereInterpolator(MicrosphereInterpolator.DEFAULT_MICROSPHERE_ELEMENTS, MicrosphereInterpolator.DEFAULT_BRIGHTNESS_EXPONENT).


MicrosphereInterpolator

public MicrosphereInterpolator(int elements,
                               int exponent)
                        throws NotPositiveException,
                               NotStrictlyPositiveException
Create a microsphere interpolator.

Parameters:
elements - Number of surface elements of the microsphere.
exponent - Exponent used in the power law that computes the weights (distance dimming factor) of the sample data.
Throws:
NotPositiveException - if exponent < 0.
NotStrictlyPositiveException - if elements <= 0.
Method Detail

interpolate

public MultivariateFunction interpolate(double[][] xval,
                                        double[] yval)
                                 throws DimensionMismatchException,
                                        NoDataException,
                                        NullArgumentException
Computes an interpolating function for the data set.

Specified by:
interpolate in interface MultivariateInterpolator
Parameters:
xval - the arguments for the interpolation points. xval[i][0] is the first component of interpolation point i, xval[i][1] is the second component, and so on until xval[i][d-1], the last component of that interpolation point (where d is thus the dimension of the space).
yval - the values for the interpolation points
Returns:
a function which interpolates the data set
Throws:
DimensionMismatchException - when the array dimensions are not consistent.
NoDataException - if an array has zero-length.
NullArgumentException - if the arguments are null.


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