/*
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package org.hyperic.util.data;
/**
* IDataPoint is an interface that is used to allow the chart to retrieve the
* value and label of an individual data point. For line and column charts the
* value is drawn on the Y axis and label is displayed on the X axis. Any
* that are added to the chart datum collection must implement the IDataPoint
* interface.
*/
public interface IDataPoint
{
/**
* Retrieves the value of a chart data point. The label is displayed on the
* Y axis for line and column charts.
*
* @return A floating point value for a chart data point.
*/
public double getValue();
}