org.mov.chart.graph
Class SupportAndResistenceGraph

java.lang.Object
  org.mov.chart.graph.AbstractGraph
      org.mov.chart.graph.SupportAndResistenceGraph

All Implemented Interfaces:

Graph

public class SupportAndResistenceGraph
extends AbstractGraph

Support and Resistence "graph". This graph draws single lines across common price occurrances. NOTE: Experimental and work in progress.

Author:

Mark Hummel

Field Summary

Fields inherited from interface org.mov.chart.graph.Graph

TOOL_TIP_BUFFER

Constructor Summary

SupportAndResistenceGraph(GraphSource source)
Create a new support and Resistence graph.

Method Summary

Graphable[]	createSupportAndResistence(Graphable source, Graphable support, Graphable resistence) Creates a new support and resistence based on the given data source.
double	getHighestY(java.util.List x) Return the highest Y value in the given X range.
double	getLowestY(java.util.List x) Return the loweset Y value in the given X range.
java.lang.String	getName() Return the name of this graph.
java.lang.String	getToolTipText(java.lang.Comparable x, int y, int yoffset, double verticalScale, double bottomLineValue) Get the tool tip text for the given X value and y coordinate.
boolean	isPrimary() Return whether the graph is a primary graph.
void	render(java.awt.Graphics g, java.awt.Color c, int xoffset, int yoffset, double horizontalScale, double verticalScale, double bottomLineValue, java.util.List xRange) Draw the graph.

Methods inherited from class org.mov.chart.graph.AbstractGraph

getAcceptableMajorDeltas, getAcceptableMinorDeltas, getEndX, getSettings, getSource, getSourceName, getStartX, getUI, getXRange, getY, getYLabel, setSettings

Methods inherited from class java.lang.Object

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

Constructor Detail

SupportAndResistenceGraph

public SupportAndResistenceGraph(GraphSource source)

Create a new support and Resistence graph.

Parameters:

source - containing the data source, typically day close.

Method Detail

render

public void render(java.awt.Graphics g,
                   java.awt.Color c,
                   int xoffset,
                   int yoffset,
                   double horizontalScale,
                   double verticalScale,
                   double bottomLineValue,
                   java.util.List xRange)

Description copied from interface: Graph

Draw the graph.

Parameters:

g - the Graphics object to render to

c - the colour the graph should be rendered in; override this if the graph should be drawn in a certain colour - such as a Moving Average graph

xoffset - the x offset in the graphics object where the graph starts

yoffset - the y offset in the graphics object where the graph starts

horizontalScale - horizontal scale factor; use this to convert between X value in the xRange to a cartesian coordinate x

verticalScale - vertical scale factor; use this to convert between Y value to a cartesian coordinate y

bottomLineValue - the Y value of the lowest line in the graph

xRange - a List of Comparable that contain the X values to plot

getToolTipText

public java.lang.String getToolTipText(java.lang.Comparable x,
                                       int y,
                                       int yoffset,
                                       double verticalScale,
                                       double bottomLineValue)

Get the tool tip text for the given X value and y coordinate.

Specified by:

getToolTipText in interface Graph

Overrides:

getToolTipText in class AbstractGraph

Parameters:

x - the X value

y - the y coordinate

yoffset - y offset from top of graph

verticalScale - vertical scale factor

bottomLineValue - the Y value of the lowest line in the graph

Returns:

tool tip text containing the day low, day high and day close quotes

getHighestY

public double getHighestY(java.util.List x)

Description copied from class: AbstractGraph

Return the highest Y value in the given X range.

Specified by:

getHighestY in interface Graph

Overrides:

getHighestY in class AbstractGraph

Parameters:

x - range of X values

Returns:

the highest Y value of the default GraphSource

getLowestY

public double getLowestY(java.util.List x)

Description copied from class: AbstractGraph

Return the loweset Y value in the given X range.

Specified by:

getLowestY in interface Graph

Overrides:

getLowestY in class AbstractGraph

Parameters:

x - range of X values

Returns:

the lowest Y value of the default GraphSource

getName

public java.lang.String getName()

Return the name of this graph.

Returns:

Bar Chart

isPrimary

public boolean isPrimary()

Description copied from interface: Graph

Return whether the graph is a primary graph. Primary graphs will appear together in the top chart. Secondary graphs appear in their own charts which are added below. The day close graph is primary; while the day close graph is secondary.

Returns:

true if the graph is a primary graph

createSupportAndResistence

public Graphable[] createSupportAndResistence(Graphable source,
                                              Graphable support,
                                              Graphable resistence)

Creates a new support and resistence based on the given data source.

Parameters:

source - the graph source to average

support - the data points of a support line

resistence - the data points of a resistence line Currently only the points of the most numerous peaks and troughs are used as a heuristic to determine the points of support and resistence. It's a heuristic only, and still needs work.