org.apache.commons.math.analysis.interpolation
Class TricubicSplineInterpolatingFunction
java.lang.Object
org.apache.commons.math.analysis.interpolation.TricubicSplineInterpolatingFunction
- All Implemented Interfaces:
- TrivariateRealFunction
public class TricubicSplineInterpolatingFunction
- extends Object
- implements TrivariateRealFunction
Function that implements the
tricubic spline interpolation, as proposed in
Tricubic interpolation in three dimensions
F. Lekien and J. Marsden
Int. J. Numer. Meth. Engng 2005; 63:455-471
- Since:
- 2.2
- Version:
- $Revision$ $Date$
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Constructor Summary |
TricubicSplineInterpolatingFunction(double[] x,
double[] y,
double[] z,
double[][][] f,
double[][][] dFdX,
double[][][] dFdY,
double[][][] dFdZ,
double[][][] d2FdXdY,
double[][][] d2FdXdZ,
double[][][] d2FdYdZ,
double[][][] d3FdXdYdZ)
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Method Summary |
double |
value(double x,
double y,
double z)
Compute the value for the function. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TricubicSplineInterpolatingFunction
public TricubicSplineInterpolatingFunction(double[] x,
double[] y,
double[] z,
double[][][] f,
double[][][] dFdX,
double[][][] dFdY,
double[][][] dFdZ,
double[][][] d2FdXdY,
double[][][] d2FdXdZ,
double[][][] d2FdYdZ,
double[][][] d3FdXdYdZ)
- Parameters:
x - Sample values of the x-coordinate, in increasing order.y - Sample values of the y-coordinate, in increasing order.z - Sample values of the y-coordinate, in increasing order.f - Values of the function on every grid point.dFdX - Values of the partial derivative of function with respect
to x on every grid point.dFdY - Values of the partial derivative of function with respect
to y on every grid point.dFdZ - Values of the partial derivative of function with respect
to z on every grid point.d2FdXdY - Values of the cross partial derivative of function on
every grid point.d2FdXdZ - Values of the cross partial derivative of function on
every grid point.d2FdYdZ - Values of the cross partial derivative of function on
every grid point.d3FdXdYdZ - Values of the cross partial derivative of function on
every grid point.
- Throws:
NoDataException - if any of the arrays has zero length.
DimensionMismatchException - if the various arrays do not contain
the expected number of elements.
IllegalArgumentException - if x, y or z
are not strictly increasing.
value
public double value(double x,
double y,
double z)
- Compute the value for the function.
- Specified by:
value in interface TrivariateRealFunction
- Parameters:
x - x-coordinate for which the function value should be computed.y - y-coordinate for which the function value should be computed.z - z-coordinate for which the function value should be computed.
- Returns:
- the value.
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