org.jfree.data.xy.AbstractIntervalXYDataset Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jfreechart Show documentation
Show all versions of jfreechart Show documentation
JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D APIs, it currently supports bar charts, pie charts,
line charts, XY-plots and time series plots.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ------------------------------
* AbstractIntervalXYDataset.java
* ------------------------------
* (C) Copyright 2004-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited).
* Contributor(s): -;
*
* Changes
* -------
* 05-May-2004 : Version 1 (DG);
* 15-Jul-2004 : Switched getStartX() and getStartXValue() methods and
* others (DG);
* 18-Aug-2004 : Moved from org.jfree.data --> org.jfree.data.xy (DG);
*
*/
package org.jfree.data.xy;
/**
* An base class that you can use to create new implementations of the
* {@link IntervalXYDataset} interface.
*/
public abstract class AbstractIntervalXYDataset extends AbstractXYDataset
implements IntervalXYDataset {
/**
* Returns the start x-value (as a double primitive) for an item within a
* series.
*
* @param series the series index (zero-based).
* @param item the item index (zero-based).
*
* @return The value.
*/
@Override
public double getStartXValue(int series, int item) {
double result = Double.NaN;
Number x = getStartX(series, item);
if (x != null) {
result = x.doubleValue();
}
return result;
}
/**
* Returns the end x-value (as a double primitive) for an item within a
* series.
*
* @param series the series index (zero-based).
* @param item the item index (zero-based).
*
* @return The value.
*/
@Override
public double getEndXValue(int series, int item) {
double result = Double.NaN;
Number x = getEndX(series, item);
if (x != null) {
result = x.doubleValue();
}
return result;
}
/**
* Returns the start y-value (as a double primitive) for an item within a
* series.
*
* @param series the series index (zero-based).
* @param item the item index (zero-based).
*
* @return The value.
*/
@Override
public double getStartYValue(int series, int item) {
double result = Double.NaN;
Number y = getStartY(series, item);
if (y != null) {
result = y.doubleValue();
}
return result;
}
/**
* Returns the end y-value (as a double primitive) for an item within a
* series.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The value.
*/
@Override
public double getEndYValue(int series, int item) {
double result = Double.NaN;
Number y = getEndY(series, item);
if (y != null) {
result = y.doubleValue();
}
return result;
}
}