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Java Source Code / Java Documentation » GIS » GeoTools 2.4.1 » org.geotools.math

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.geotools.math .Polynom

Polynom
public class Polynom implements Serializable(Code)
	The coefficients of a polynomial equation. The equation must be in the form `y = c₀ + c₁×x + c₂×x² + c₃×x³ + ... + c_n×xⁿ`. The static method Polynom.roots(double[]) can be used for computing the root of a polynomial equation without creating a Polygon object. version: $Id: Polynom.java 22443 2006-10-27 20:47:22Z desruisseaux $ author: Ken Turkiwski author: Martin Desruisseaux since: 2.0

Constructor Summary
public	Polynom(double[] c) Construct a polynom with the specified coefficients. Parameters: c - The coefficients.

Method Summary
public boolean	equals(Object object) Compare this polynom with the specified object for equality.
public int	hashCode() Returns a hash value for this polynom.
public static void	main(String[] c) Display to the standard output the roots of a polynomial equation. More specifically, this method solve the following equation: `c[0] + c[1]x + c[2]x² + c[3]*x³ + ...`
public double[]	roots() Find the roots of this polynome.
public static double[]	roots(double[] c) Find the roots of a polynomial equation.
public String	toString() Returns a string representation of this polynom.
final public double	y(double x) Evaluate this polynomial equation for the specified `x` value. More specifically, this method compute `c₀ + c₁×x + c₂×x² + c₃×x³ + ...`

Constructor Detail

Polynom
public Polynom(double[] c)(Code)
	Construct a polynom with the specified coefficients. Parameters: c - The coefficients. This array is copied.

Method Detail

equals
public boolean equals(Object object)(Code)
	Compare this polynom with the specified object for equality.

hashCode
public int hashCode()(Code)
	Returns a hash value for this polynom.

main
public static void main(String[] c)(Code)
	Display to the standard output the roots of a polynomial equation. More specifically, this method solve the following equation: `c[0] + c[1]x + c[2]x² + c[3]x³ + ... + c[n]xⁿ == 0` where `n` is the array length minus 1. Parameters: c - The coefficients for the polynomial equation.

roots
public double[] roots()(Code)
	Find the roots of this polynome. The roots.

roots
public static double[] roots(double[] c)(Code)
	Find the roots of a polynomial equation. More specifically, this method solve the following equation: `c[0] + c[1]x + c[2]x² + c[3]x³ + ... + c[n]xⁿ == 0` where `n` is the array length minus 1. Parameters: c - The coefficients for the polynomial equation. The roots. This array may have any length up to n-1 . throws: UnsupportedOperationException - if there is more coefficients than this methodcan handle.

toString
public String toString()(Code)
	Returns a string representation of this polynom.

y
final public double y(double x)(Code)
	Evaluate this polynomial equation for the specified `x` value. More specifically, this method compute `c₀ + c₁×x + c₂×x² + c₃×x³ + ... + c_n×xⁿ`.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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