org.apache.commons.math.analysis.interpolation
public class BicubicSplineInterpolator extends java.lang.Object implements BivariateRealGridInterpolator
Constructor and Description |
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BicubicSplineInterpolator() |
Modifier and Type | Method and Description |
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BicubicSplineInterpolatingFunction |
interpolate(double[] xval,
double[] yval,
double[][] fval)
Computes an interpolating function for the data set.
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private int |
nextIndex(int i,
int max)
Compute the next index of an array, clipping if necessary.
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private int |
previousIndex(int i)
Compute the previous index of an array, clipping if necessary.
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public BicubicSplineInterpolatingFunction interpolate(double[] xval, double[] yval, double[][] fval) throws MathException, java.lang.IllegalArgumentException
interpolate
in interface BivariateRealGridInterpolator
xval
- All the x-coordinates of the interpolation points, sorted
in increasing order.yval
- All the y-coordinates of the interpolation points, sorted
in increasing order.fval
- The values of the interpolation points on all the grid knots:
fval[i][j] = f(xval[i], yval[j])
.MathException
- if arguments violate assumptions made by the
interpolation algorithm.java.lang.IllegalArgumentException
private int nextIndex(int i, int max)
i
is larger than or equal to 0}.i
- Indexmax
- Upper limit of the arrayprivate int previousIndex(int i)
i
is smaller than the size of the array.i
- IndexCopyright (c) 2003-2016 Apache Software Foundation