org.apache.commons.math3.analysis.interpolation

## Class BicubicSplineInterpolator

- java.lang.Object
- - org.apache.commons.math3.analysis.interpolation.BicubicSplineInterpolator

- All Implemented Interfaces:
    BivariateGridInterpolator
  Direct Known Subclasses:
    SmoothingPolynomialBicubicSplineInterpolator

  Deprecated.
  as of 3.4 replaced by `PiecewiseBicubicSplineInterpolator`

      @Deprecated
      public class BicubicSplineInterpolator
      extends Object
      implements BivariateGridInterpolator

  Generates a bicubic interpolating function. Due to numerical accuracy issues this should not be used.
  Since:
    2.2

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `BicubicSplineInterpolator()` Deprecated. Default constructor.
    `BicubicSplineInterpolator(boolean initializeDerivatives)` Deprecated. Creates an interpolator.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `BicubicSplineInterpolatingFunction` | `interpolate(double[] xval, double[] yval, double[][] fval)` Deprecated. Compute an interpolating function for the dataset.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### BicubicSplineInterpolator

          public BicubicSplineInterpolator()

      Deprecated.
      Default constructor. The argument `initializeDerivatives` is set to `false`.

    - #### BicubicSplineInterpolator

          public BicubicSplineInterpolator(boolean initializeDerivatives)

      Deprecated.
      Creates an interpolator.
      Parameters:
        `initializeDerivatives` - Whether to initialize the internal data needed for calling any of the methods that compute the partial derivatives of the `function` returned from the call to `interpolate`.

  - ### Method Detail

    - #### interpolate

          public BicubicSplineInterpolatingFunction interpolate(double[] xval,
                                                       double[] yval,
                                                       double[][] fval)
                                                         throws NoDataException,
                                                                DimensionMismatchException,
                                                                NonMonotonicSequenceException,
                                                                NumberIsTooSmallException

      Deprecated.
      Compute an interpolating function for the dataset.
      Specified by:
        `interpolate` in interface `BivariateGridInterpolator`
      Parameters:
        `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])`.
      Returns:
        a function which interpolates the dataset.
      Throws:
        `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 interpolation

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