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 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.commons.math3.analysis.interpolation;

import org.apache.commons.math3.analysis.MultivariateFunction;
import org.apache.commons.math3.exception.DimensionMismatchException;
import org.apache.commons.math3.exception.MathIllegalArgumentException;
import org.apache.commons.math3.exception.NoDataException;
import org.apache.commons.math3.exception.NullArgumentException;

Interface representing a univariate real interpolating function.
Since:
2.1/**
 * Interface representing a univariate real interpolating function.
 *
 * @since 2.1
 */
public interface MultivariateInterpolator {

    
Computes an interpolating function for the data set.
Params:
xval – the arguments for the interpolation points. xval[i][0] is the first component of interpolation point i, xval[i][1] is the second component, and so on until xval[i][d-1], the last component of that interpolation point (where d is thus the dimension of the space).
yval – the values for the interpolation points
Throws:
MathIllegalArgumentException – if the arguments violate assumptions
made by the interpolation algorithm.
DimensionMismatchException – when the array dimensions are not consistent.
NoDataException – if an array has zero-length.
NullArgumentException – if the arguments are null.
Returns:
a function which interpolates the data set/**
     * Computes an interpolating function for the data set.
     *
     * @param xval the arguments for the interpolation points.
     * {@code xval[i][0]} is the first component of interpolation point
     * {@code i}, {@code xval[i][1]} is the second component, and so on
     * until {@code xval[i][d-1]}, the last component of that interpolation
     * point (where {@code d} is thus the dimension of the space).
     * @param yval the values for the interpolation points
     * @return a function which interpolates the data set
     * @throws MathIllegalArgumentException if the arguments violate assumptions
     * made by the interpolation algorithm.
     * @throws DimensionMismatchException when the array dimensions are not consistent.
     * @throws NoDataException if an array has zero-length.
     * @throws NullArgumentException if the arguments are {@code null}.
     */
    MultivariateFunction interpolate(double[][] xval, double[] yval)
        throws MathIllegalArgumentException, DimensionMismatchException,
               NoDataException, NullArgumentException;
}