Package org.jfree.data.function
Class PolynomialFunction2D
java.lang.Object
org.jfree.data.function.PolynomialFunction2D
- All Implemented Interfaces:
Serializable
,Function2D
public class PolynomialFunction2D extends Object implements Function2D, Serializable
A function in the form
y = a0 + a1 * x + a2 * x^2 + ... + an *
x^n
. Instances of this class are immutable.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description PolynomialFunction2D(double[] coefficients)
Constructs a new polynomial functiony = a0 + a1 * x + a2 * x^2 + ... + an * x^n
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Method Summary
Modifier and Type Method Description boolean
equals(Object obj)
Tests this function for equality with an arbitrary object.double[]
getCoefficients()
Returns a copy of the coefficients array that was specified in the constructor.int
getOrder()
Returns the order of the polynomial.double
getValue(double x)
Returns the function value.int
hashCode()
Returns a hash code for this instance.
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Constructor Details
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PolynomialFunction2D
Constructs a new polynomial functiony = a0 + a1 * x + a2 * x^2 + ... + an * x^n
- Parameters:
coefficients
- an array with the coefficients [a0, a1, ..., an] (null
not permitted).
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Method Details
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getCoefficients
Returns a copy of the coefficients array that was specified in the constructor.- Returns:
- The coefficients array.
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getOrder
Returns the order of the polynomial.- Returns:
- The order.
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getValue
Returns the function value.- Specified by:
getValue
in interfaceFunction2D
- Parameters:
x
- the x-value.- Returns:
- The value.
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equals
Tests this function for equality with an arbitrary object. -
hashCode
Returns a hash code for this instance.
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