org.progeeks.jfreechart
Class ChartUtils

java.lang.Object
  org.progeeks.jfreechart.ChartUtils

public class ChartUtils
extends java.lang.Object

Some useful static routines. Essentially extends JFreeChart org.jfree.data.general.DatasetUtilities and org.jfree.chart.ChartUtilities.

Version:

$Revision: 1.4 $

Author:

esword

Constructor Summary

ChartUtils()

Method Summary

static org.jfree.data.general.Dataset	getDatasetFromEntity(org.jfree.chart.entity.ChartEntity entity)
static java.util.List	getSubPlots(org.jfree.chart.plot.Plot plot) If the plot is a combined plot, return a list of all subplots.
static int	getXIndex(org.jfree.data.xy.XYDataset dataset, int seriesIndex, double xValue) Returns the index of the item in the dataset with the matching x-value.
static java.lang.Number	getYValue(org.jfree.data.xy.XYDataset dataset, int seriesIndex, double xValue)
static java.lang.Number	getYValue(org.jfree.data.xy.XYDataset dataset, int seriesIndex, java.lang.Number xValue) Given an X value (not a series index), return the corresponding Y value if it exists or null if it doesn't.
static boolean	isCombinedPlot(org.jfree.chart.plot.Plot chartPlot)
static boolean	isDataEntity(org.jfree.chart.entity.ChartEntity entity)

Methods inherited from class java.lang.Object

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

Constructor Detail

ChartUtils

public ChartUtils()

Method Detail

getXIndex

public static int getXIndex(org.jfree.data.xy.XYDataset dataset,
                            int seriesIndex,
                            double xValue)

Returns the index of the item in the dataset with the matching x-value.

Parameters:

dataset -

seriesIndex -

xValue -

Returns:

The matching index or -1 if no match exists.

getYValue

public static java.lang.Number getYValue(org.jfree.data.xy.XYDataset dataset,
                                         int seriesIndex,
                                         java.lang.Number xValue)

Given an X value (not a series index), return the corresponding Y value if it exists or null if it doesn't.

Parameters:

dataset - The dataset to search through

seriesIndex - The series to access

xValue - Value that the x-item must have

Returns:

Corresponding Y value

getYValue

public static java.lang.Number getYValue(org.jfree.data.xy.XYDataset dataset,
                                         int seriesIndex,
                                         double xValue)

getDatasetFromEntity

public static org.jfree.data.general.Dataset getDatasetFromEntity(org.jfree.chart.entity.ChartEntity entity)

Parameters:

entity -

isDataEntity

public static boolean isDataEntity(org.jfree.chart.entity.ChartEntity entity)

isCombinedPlot

public static boolean isCombinedPlot(org.jfree.chart.plot.Plot chartPlot)

getSubPlots

public static java.util.List getSubPlots(org.jfree.chart.plot.Plot plot)

If the plot is a combined plot, return a list of all subplots. Otherwise, just return a list with one element - the plot itself.

Parameters:

plot -