public class BicubicInterpolator extends Object implements BivariateGridInterpolator
bicubic interpolating
function.
Caveat: Because the interpolation scheme requires that derivatives be
specified at the sample points, those are approximated with finite
differences (using the 2-points symmetric formulae).
Since their values are undefined at the borders of the provided
interpolation ranges, the interpolated values will be wrong at the
edges of the patch.
The interpolate method will return a function that overrides
BicubicInterpolatingFunction.isValidPoint(double,double) to
indicate points where the interpolation will be inaccurate.
| Constructor and Description |
|---|
BicubicInterpolator() |
| Modifier and Type | Method and Description |
|---|---|
BicubicInterpolatingFunction |
interpolate(double[] xval,
double[] yval,
double[][] fval)
Compute an interpolating function for the dataset.
|
public BicubicInterpolatingFunction interpolate(double[] xval, double[] yval, double[][] fval) throws NoDataException, DimensionMismatchException, NonMonotonicSequenceException, NumberIsTooSmallException
interpolate in interface BivariateGridInterpolatorxval - 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 - if the array is not sorted.NumberIsTooSmallException - if the number of points is too small for
the order of the interpolationCopyright © 2003–2016 The Apache Software Foundation. All rights reserved.