001    /* ===========================================================
002     * JFreeChart : a free chart library for the Java(tm) platform
003     * ===========================================================
004     *
005     * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006     *
007     * Project Info:  http://www.jfree.org/jfreechart/index.html
008     *
009     * This library is free software; you can redistribute it and/or modify it 
010     * under the terms of the GNU Lesser General Public License as published by 
011     * the Free Software Foundation; either version 2.1 of the License, or 
012     * (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but 
015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017     * License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public
020     * License along with this library; if not, write to the Free Software
021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022     * USA.  
023     *
024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025     * in the United States and other countries.]
026     *
027     * ----------------
028     * WindDataset.java
029     * ----------------
030     * (C) Copyright 2001-2004, by Achilleus Mantzios and Contributors.
031     *
032     * Original Author:  Achilleus Mantzios;
033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
034     *
035     * $Id: WindDataset.java,v 1.2.2.1 2005/10/25 21:36:51 mungady Exp $
036     *
037     * Changes
038     * -------
039     * 06-Feb-2002 : Version 1, based on code contributed by Achilleus 
040     *               Mantzios (DG);
041     *
042     */
043    
044    package org.jfree.data.xy;
045    
046    
047    /**
048     * Interface for a dataset that supplies wind intensity and direction values
049     * observed at various points in time.
050     *
051     * @author Achilleus Mantzios
052     */
053    public interface WindDataset extends XYDataset {
054    
055        /**
056         * Returns the wind direction (should be in the range 0 to 12).
057         * 
058         * @param series    The series (zero-based index).
059         * @param item      The item (zero-based index).
060         * @return The wind direction.
061         */
062        public Number getWindDirection(int series, int item);
063    
064        /**
065         * Returns the wind force on the Beaufort scale (0 to 12).
066         * 
067         * @param   series The series (zero-based index).
068         * @param   item The item (zero-based index).
069         * @return The wind force.
070         */
071        public Number getWindForce(int series, int item);
072    
073    }