1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.math.analysis.interpolation; 18 19 import org.apache.commons.math.MathException; 20 import org.apache.commons.math.analysis.BivariateRealFunction; 21 22 /** 23 * Interface representing a bivariate real interpolating function where the 24 * sample points must be specified on a regular grid. 25 * 26 * @version $Revision: 936391 $ $Date: 2010-04-21 19:00:56 +0200 (mer. 21 avril 2010) $ 27 */ 28 public interface BivariateRealGridInterpolator { 29 /** 30 * Computes an interpolating function for the data set. 31 * 32 * @param xval All the x-coordinates of the interpolation points, sorted 33 * in increasing order. 34 * @param yval All the y-coordinates of the interpolation points, sorted 35 * in increasing order. 36 * @param fval The values of the interpolation points on all the grid knots: 37 * {@code fval[i][j] = f(xval[i], yval[j])}. 38 * @return a function which interpolates the data set. 39 * @throws MathException if arguments violate assumptions made by the 40 * interpolation algorithm. 41 */ 42 BivariateRealFunction interpolate(double[] xval, double[] yval, double[][] fval) 43 throws MathException; 44 } 45
