/* ===========================================================

 * JFreeChart : a free chart library for the Java(tm) platform

 * ===========================================================

 *

 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.

 *

 * Project Info:  http://www.jfree.org/jfreechart/index.html

 *

 * This library 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 2.1 of the License, or (at your option) any later version.

 *

 * This library 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 this

 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,

 * Boston, MA 02111-1307, USA.

 *

 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 

 * in the United States and other countries.]

 *

 * ----------------

 * WindDataset.java

 * ----------------

 * (C) Copyright 2001-2004, by Achilleus Mantzios and Contributors.

 *

 * Original Author:  Achilleus Mantzios;

 * Contributor(s):   David Gilbert (for Object Refinery Limited);

 *

 * $Id: WindDataset.java,v 1.1 2004/08/31 15:36:12 mungady Exp $

 *

 * Changes

 * -------

 * 06-Feb-2002 : Version 1, based on code contributed by Achilleus Mantzios (DG);

 *

 */



package org.jfree.data.xy;





/**

 * Interface for a dataset that supplies wind intensity and direction values

 * observed at various points in time.

 *

 * @author Achilleus Mantzios

 */

public interface WindDataset extends XYDataset {



    /**

     * Returns the wind direction (should be in the range 0 to 12).

     * @param series    The series (zero-based index).

     * @param item      The item (zero-based index).

     * @return The wind direction.

     */

    public Number getWindDirection(int series, int item);



    /**

     * Returns the wind force on the Beaufort scale (0 to 12).

     * @param   series The series (zero-based index).

     * @param   item The item (zero-based index).

     * @return The wind force.

     */

    public Number getWindForce(int series, int item);



}

