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 org.apache.commons.math.MathException; 020 import org.apache.commons.math.analysis.MultivariateRealFunction; 021 022 /** 023 * Interface representing a univariate real interpolating function. 024 * 025 * @since 2.1 026 * @version $Revision: 924794 $ $Date: 2010-03-18 15:15:50 +0100 (jeu. 18 mars 2010) $ 027 */ 028 public interface MultivariateRealInterpolator { 029 030 /** 031 * Computes an interpolating function for the data set. 032 * 033 * @param xval the arguments for the interpolation points. 034 * {@code xval[i][0]} is the first component of interpolation point 035 * {@code i}, {@code xval[i][1]} is the second component, and so on 036 * until {@code xval[i][d-1]}, the last component of that interpolation 037 * point (where {@code d} is thus the dimension of the space). 038 * @param yval the values for the interpolation points 039 * @return a function which interpolates the data set 040 * @throws MathException if arguments violate assumptions made by the 041 * interpolation algorithm or some dimension mismatch occurs 042 * @throws IllegalArgumentException if there are no data (xval null or zero length) 043 */ 044 MultivariateRealFunction interpolate(double[][] xval, double[] yval) 045 throws MathException, IllegalArgumentException; 046 }