/*
* PointSeries.java
*
* Copyright (c) 2002-2015 Alexei Drummond, Andrew Rambaut and Marc Suchard
*
* This file is part of BEAST.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* BEAST is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* BEAST is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with BEAST; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
package dr.math.interfaces;
/**
* PointSeries is an interface used by many classes of the package numericalMethods.
*
* A PointSeries has the responsibility of handling mathematical
* points in 2-dimensional space.
* It is a BRIDGE to a vector containing the points.
*
* @author Didier H. Besset
*/
public interface PointSeries
{
/**
* Returns the number of points in the series.
*/
public int size();
/**
* Returns the x coordinate of the point at the given index.
* @param index the index of the point.
* @return x coordinate
*/
public double xValueAt( int index);
/**
* Returns the y coordinate of the point at the given index.
* @param index the index of the point.
* @return y coordinate
*/
public double yValueAt( int index);
}