JSci.maths.wavelet.splines
Class Spline

java.lang.Object
  JSci.maths.wavelet.MultiscaleFunction
      JSci.maths.wavelet.splines.Spline

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

LinearSpline, PiecewiseConstant, QuadraticSpline, SumOfDiracs

public abstract class Spline
extends MultiscaleFunction
implements java.lang.Cloneable

This class is meant as an abstract encapsulation for spline objects.

Constructor Summary

Spline()

Method Summary

java.lang.Object	clone() Return a copy of the object
abstract int	dimension()
abstract int	dimension(int j)
abstract boolean	equals(java.lang.Object parm1) Check if another object is equal to this MultiscaleFunction object
abstract double[]	evaluate(int parm1) Return as an array the sampled values of the function
abstract int	getFilterType() This method is used to compute how the number of scaling functions changes from on scale to the other.
abstract double[]	interpolate(int j) The interpolate method should be return the actual value of the spline on knots.
abstract java.lang.String	toString() Return a string representing the object

Methods inherited from class JSci.maths.wavelet.MultiscaleFunction

mass, mass

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Spline

public Spline()

Method Detail

dimension

public abstract int dimension(int j)

Specified by:

dimension in class MultiscaleFunction

dimension

public abstract int dimension()

Specified by:

dimension in class MultiscaleFunction

clone

public java.lang.Object clone()

Description copied from class: MultiscaleFunction

Return a copy of the object

Overrides:

clone in class MultiscaleFunction

toString

public abstract java.lang.String toString()

Description copied from class: MultiscaleFunction

Return a string representing the object

Specified by:

toString in class MultiscaleFunction

evaluate

public abstract double[] evaluate(int parm1)

Description copied from class: MultiscaleFunction

Return as an array the sampled values of the function

Specified by:

evaluate in class MultiscaleFunction

Parameters:

parm1 - number of iterations

getFilterType

public abstract int getFilterType()

Description copied from class: MultiscaleFunction

This method is used to compute how the number of scaling functions changes from on scale to the other. Basically, if you have k scaling function and a Filter of type t, you'll have 2*k+t scaling functions at the next scale (dyadic case). Notice that this method assumes that one is working with the dyadic grid while the method "previousDimension" define in the interface "Filter" doesn't.

Specified by:

getFilterType in class MultiscaleFunction

equals

public abstract boolean equals(java.lang.Object parm1)

Description copied from class: MultiscaleFunction

Check if another object is equal to this MultiscaleFunction object

Specified by:

equals in class MultiscaleFunction

interpolate

public abstract double[] interpolate(int j)

The interpolate method should be return the actual value of the spline on knots. This value would differ in general from the value generated by the Cascades algorithm and got from the method evaluate. This doesn't apply to splines of order -1,0 and 1.