org.rrd4j.graph

Class ConstantArea

java.lang.Object

org.rrd4j.graph.PlotElement

org.rrd4j.graph.SourcedPlotElement

org.rrd4j.graph.Area

org.rrd4j.graph.ConstantArea

public class ConstantArea
extends Area

Represents an area plot element with a constant value in RRD graphs. Extends Area to provide filled areas with fixed values across all data points. Useful for showing reference levels, thresholds, or baseline areas.

Field Summary

Fields inherited from class org.rrd4j.graph.SourcedPlotElement

parent, srcName, values

Fields inherited from class org.rrd4j.graph.PlotElement

color

Constructor Summary

Constructors

Constructor and Description
ConstantArea(double value, Paint color, SourcedPlotElement parent) Creates a constant area with the specified value, color, and parent.

Method Summary

Modifier and Type	Method and Description
(package private) void	assignValues(DataProcessor dproc) Assigns constant values to all data points, optionally stacking with parent values.

Methods inherited from class org.rrd4j.graph.SourcedPlotElement

getMaxValue, getMinValue, getParentColor, getValues, stackValues

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ConstantArea

ConstantArea(double value,
             Paint color,
             SourcedPlotElement parent)

Creates a constant area with the specified value, color, and parent.

Parameters:

value - the constant value for all data points

color - the fill color for the area

parent - the parent plot element for stacking

Method Detail

assignValues

void assignValues(DataProcessor dproc)

Assigns constant values to all data points, optionally stacking with parent values.

Overrides:

assignValues in class SourcedPlotElement

Parameters:

dproc - the data processor for value assignment