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/*
* Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
*
* 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 program 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
* (http://www.gnu.org/copyleft/lesser.html).
*
* 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
*/
package jcckit.data;
import java.util.StringTokenizer;
import jcckit.util.ConfigParameters;
/**
* A plot is a {@link DataContainer} of {@link DataCurve DataCurves}.
*
* @author Franz-Josef Elmer
*/
public class DataPlot extends DataContainer {
/** Config parameter key. */
public static final String CURVES_KEY = "curves",
DATA_KEY = "data";
/** Creates an empty instance. */
public DataPlot() {}
/**
* Creates an instance from the specified config parameters.
* <table border=1 cellpadding=5>
* <tr><th>Key & Default Value</th><th>Type</th><th>Mandatory</th>
* <th>Description</th></tr>
* <tr><td><tt>curves</tt></td><td><tt>String[]</tt></td><td>yes</td>
* <td>List of keys denoting data curves. Each key refers to
* config parameters used in the
* <a href="DataCurve.html#DataCurve(jcckit.util.ConfigParameters)">
* constructor</a> of {@link DataCurve}.</td></tr>
* </table>
*/
public DataPlot(ConfigParameters config) {
StringTokenizer tokenizer = new StringTokenizer(config.get(CURVES_KEY));
while (tokenizer.hasMoreTokens()) {
addElement(new DataCurve(config.getNode(tokenizer.nextToken())));
}
}
/**
* Convenient method to create a <tt>DataPlot</tt> based on the specified
* config parameters. It is a short-cut of
* <tt>new DataPlot(config.getNode("data"))</tt>.
*/
public static DataPlot create(ConfigParameters config) {
return new DataPlot(config.getNode(DATA_KEY));
}
/**
* Returns <tt>true</tt> if <tt>element</tt> is an instance of
* {@link DataCurve}.
*/
protected boolean isValid(DataElement element) {
return element instanceof DataCurve;
}
}
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