    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017    package org.apache.commons.math.analysis.interpolation;
    018
    019    import java.io.Serializable;
    020
    021    import org.apache.commons.math.MathException;
    022    import org.apache.commons.math.analysis.polynomials.PolynomialFunctionLagrangeForm;
    023
    024    /**
    025     * Implements the <a href="http://mathworld.wolfram.com/NevillesAlgorithm.html">
    026     * Neville's Algorithm</a> for interpolation of real univariate functions. For
    027     * reference, see <b>Introduction to Numerical Analysis</b>, ISBN 038795452X,
    028     * chapter 2.
    029     * <p>
    030     * The actual code of Neville's evalution is in PolynomialFunctionLagrangeForm,
    031     * this class provides an easy-to-use interface to it.</p>
    032     *
    033     * @version $Revision: 799857 $ $Date: 2009-08-01 15:07:12 +0200 (sam. 01 ao??t 2009) $
    034     * @since 1.2
    035     */
    036    public class NevilleInterpolator implements UnivariateRealInterpolator,
    037        Serializable {
    038
    039        /** serializable version identifier */
    040        static final long serialVersionUID = 3003707660147873733L;
    041
    042        /**
    043         * Computes an interpolating function for the data set.
    044         *
    045         * @param x the interpolating points array
    046         * @param y the interpolating values array
    047         * @return a function which interpolates the data set
    048         * @throws MathException if arguments are invalid
    049         */
    050        public PolynomialFunctionLagrangeForm interpolate(double x[], double y[])
    051            throws MathException {
    052            return new PolynomialFunctionLagrangeForm(x, y);
    053        }
    054    }