org.apache.commons.math3.analysis.interpolation
public class BicubicSplineInterpolator extends java.lang.Object implements BivariateGridInterpolator
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)
Compute an interpolating function for the dataset.
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private int |
nextIndex(int i,
int max)
Computes the next index of an array, clipping if necessary.
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private int |
previousIndex(int i)
Computes the previous index of an array, clipping if necessary.
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public BicubicSplineInterpolatingFunction interpolate(double[] xval, double[] yval, double[][] fval) throws NoDataException, DimensionMismatchException, NonMonotonicSequenceException
interpolate
in interface BivariateGridInterpolator
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])
.NoDataException
- if any of the arrays has zero length.DimensionMismatchException
- if the array lengths are inconsistent.NonMonotonicSequenceException
private int nextIndex(int i, int max)
i >= 0
.i
- Index.max
- Upper limit of the array.private int previousIndex(int i)
i
is smaller than the size
of the array.i
- Index.Copyright (c) 2003-2013 Apache Software Foundation