Class PiecewiseBicubicSplineInterpolatingFunction
java.lang.Object
org.apache.commons.math3.analysis.interpolation.PiecewiseBicubicSplineInterpolatingFunction
- All Implemented Interfaces:
BivariateFunction
public class PiecewiseBicubicSplineInterpolatingFunction
extends Object
implements BivariateFunction
Function that implements the
bicubic spline
interpolation.
This implementation currently uses
AkimaSplineInterpolator as the
underlying one-dimensional interpolator, which requires 5 sample points;
insufficient data will raise an exception when the
value method is called.- Since:
- 3.4
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Constructor Summary
ConstructorsConstructorDescriptionPiecewiseBicubicSplineInterpolatingFunction(double[] x, double[] y, double[][] f) -
Method Summary
Modifier and TypeMethodDescriptionbooleanisValidPoint(double x, double y) Indicates whether a point is within the interpolation range.doublevalue(double x, double y) Compute the value for the function.
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Constructor Details
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PiecewiseBicubicSplineInterpolatingFunction
public PiecewiseBicubicSplineInterpolatingFunction(double[] x, double[] y, double[][] f) throws DimensionMismatchException, NullArgumentException, NoDataException, NonMonotonicSequenceException - Parameters:
x- Sample values of the x-coordinate, in increasing order.y- Sample values of the y-coordinate, in increasing order.f- Values of the function on every grid point. the expected number of elements.- Throws:
NonMonotonicSequenceException- ifxoryare not strictly increasing.NullArgumentException- if any of the arguments are nullNoDataException- if any of the arrays has zero length.DimensionMismatchException- if the length of x and y don't match the row, column height of f
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Method Details
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value
Compute the value for the function.- Specified by:
valuein interfaceBivariateFunction- Parameters:
x- Abscissa for which the function value should be computed.y- Ordinate for which the function value should be computed.- Returns:
- the value.
- Throws:
OutOfRangeException
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isValidPoint
public boolean isValidPoint(double x, double y) Indicates whether a point is within the interpolation range.- Parameters:
x- First coordinate.y- Second coordinate.- Returns:
trueif (x, y) is a valid point.- Since:
- 3.3
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