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java.lang.Object org.opensourcephysics.numerics.LagrangeInterpolator
public class LagrangeInterpolator
LagrangeInterpolator uses a polynomial interpolation formula to evaluate values between data points.
Field Summary | |
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protected double[] |
hornerCoef
Polynomial coefficients. |
Constructor Summary | |
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LagrangeInterpolator(double[] xdata,
double[] ydata)
Constructs a Lagrange interpolating polynomial from the given data using Horner's expansion for the representation of the polynomial. |
Method Summary | |
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double |
evaluate(double x)
Computes the interpolated y value for a given x value. |
double[] |
getCoefficients()
Gets the polynomial coefficients c in c[0] + c[1] * x + c[2] * x^2 + .... |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected double[] hornerCoef
Constructor Detail |
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public LagrangeInterpolator(double[] xdata, double[] ydata)
xdata
- double[]ydata
- double[]Method Detail |
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public double evaluate(double x)
evaluate
in interface Function
x
- value
public double[] getCoefficients()
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