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## org.jfree.data
Class CombinedDataset

    java.lang.Object
      org.jfree.data.AbstractDataset
          org.jfree.data.AbstractSeriesDataset
              org.jfree.data.AbstractXYDataset
                  org.jfree.data.AbstractIntervalXYDataset
                      org.jfree.data.CombinedDataset

All Implemented Interfaces:
  java.lang.Cloneable, CombinationDataset, Dataset, java.util.EventListener, HighLowDataset, IntervalXYDataset, java.io.ObjectInputValidation, java.io.Serializable, SeriesChangeListener, SeriesDataset, XYDataset

public class CombinedDataset
extends AbstractIntervalXYDataset
implements XYDataset, HighLowDataset, IntervalXYDataset, CombinationDataset

This class can combine instances of `XYDataset`, `HighLowDataset` and `IntervalXYDataset` together exposing the union of all the series under one dataset.

Author:
  Bill Kelemen (bill@kelemen-usa.com)
See Also:
  Serialized Form

Constructor Summary
`CombinedDataset()` Default constructor for an empty combination.
`CombinedDataset(SeriesDataset[] data)` Creates a CombinedDataset initialized with an array of SeriesDatasets.

Method Summary
`void` | `add(SeriesDataset data)` Adds one SeriesDataset to the combination.
`void` | `add(SeriesDataset[] data)` Adds an array of SeriesDataset's to the combination.
`void` | `add(SeriesDataset data, int series)` Adds one series from a SeriesDataset to the combination.
`int` | `getChildPosition(Dataset child)` Returns the child position.
`double` | `getClose(int series, int item)` Returns the close-value (as a double primitive) for an item within a series.
`java.lang.Number` | `getCloseValue(int series, int item)` Returns the close-value for the specified series and item.
`java.lang.Number` | `getEndXValue(int series, int item)` Returns the ending X value for the specified series and item.
`java.lang.Number` | `getEndYValue(int series, int item)` Returns the ending Y value for the specified series and item.
`double` | `getHigh(int series, int item)` Returns the high-value (as a double primitive) for an item within a series.
`java.lang.Number` | `getHighValue(int series, int item)` Returns the high-value for the specified series and item.
`int` | `getItemCount(int series)` Returns the number of items in a series.
`double` | `getLow(int series, int item)` Returns the low-value (as a double primitive) for an item within a series.
`java.lang.Number` | `getLowValue(int series, int item)` Returns the low-value for the specified series and item.
`int[]` | `getMap()` Returns a map or indirect indexing form our series into parent's series.
`double` | `getOpen(int series, int item)` Returns the open-value (as a double primitive) for an item within a series.
`java.lang.Number` | `getOpenValue(int series, int item)` Returns the open-value for the specified series and item.
`SeriesDataset` | `getParent()` Returns the parent Dataset of this combination.
`int` | `getSeriesCount()` Returns the number of series in the dataset.
`java.lang.String` | `getSeriesName(int series)` Returns the name of a series.
`java.lang.Number` | `getStartXValue(int series, int item)` Returns the starting X value for the specified series and item.
`java.lang.Number` | `getStartYValue(int series, int item)` Returns the starting Y value for the specified series and item.
`double` | `getVolume(int series, int item)` Returns the volume-value (as a double primitive) for an item within a series.
`java.lang.Number` | `getVolumeValue(int series, int item)` Returns the volume value for the specified series and item.
`java.lang.Number` | `getXValue(int series, int item)` Returns the X-value for the specified series and item.
`java.lang.Number` | `getYValue(int series, int item)` Returns the Y-value for the specified series and item.

Methods inherited from class org.jfree.data.AbstractIntervalXYDataset
`getEndX, getEndY, getStartX, getStartY`

Methods inherited from class org.jfree.data.AbstractXYDataset
`getX, getY`

Methods inherited from class org.jfree.data.AbstractSeriesDataset
`seriesChanged`

Methods inherited from class org.jfree.data.AbstractDataset
`addChangeListener, clone, fireDatasetChanged, getGroup, notifyListeners, removeChangeListener, setGroup, validateObject`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.jfree.data.XYDataset
`getX, getY`

Methods inherited from interface org.jfree.data.Dataset
`addChangeListener, getGroup, removeChangeListener, setGroup`

Methods inherited from interface org.jfree.data.IntervalXYDataset
`getEndX, getEndY, getStartX, getStartY`

Constructor Detail

### CombinedDataset

    public CombinedDataset()

  Default constructor for an empty combination.

### CombinedDataset

    public CombinedDataset(SeriesDataset[] data)

  Creates a CombinedDataset initialized with an array of SeriesDatasets.

Parameters:
  `data` - array of SeriesDataset that contains the SeriesDatasets to combine.

Method Detail

### add

    public void add(SeriesDataset data)

  Adds one SeriesDataset to the combination. Listeners are notified of the change.

  Parameters:
    `data` - the SeriesDataset to add.

### add

    public void add(SeriesDataset[] data)

  Adds an array of SeriesDataset's to the combination. Listeners are notified of the change.

  Parameters:
    `data` - array of SeriesDataset to add

### add

    public void add(SeriesDataset data,
                    int series)

  Adds one series from a SeriesDataset to the combination. Listeners are notified of the change.

  Parameters:
    `data` - the SeriesDataset where series is contained
    `series` - series to add

### getSeriesCount

    public int getSeriesCount()

  Returns the number of series in the dataset.

  Specified by:
    `getSeriesCount` in interface `SeriesDataset`
  Specified by:
    `getSeriesCount` in class `AbstractSeriesDataset`
  Returns:
    The number of series in the dataset.

### getSeriesName

    public java.lang.String getSeriesName(int series)

  Returns the name of a series.

  Specified by:
    `getSeriesName` in interface `SeriesDataset`
  Specified by:
    `getSeriesName` in class `AbstractSeriesDataset`
  Parameters:
    `series` - the series (zero-based index).
  Returns:
    the name of a series.

### getXValue

    public java.lang.Number getXValue(int series,
                                      int item)

  Returns the X-value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `XYDataset`.

  Specified by:
    `getXValue` in interface `XYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the X-value for the specified series and item.

### getYValue

    public java.lang.Number getYValue(int series,
                                      int item)

  Returns the Y-value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `XYDataset`.

  Specified by:
    `getYValue` in interface `XYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the Y-value for the specified series and item.

### getItemCount

    public int getItemCount(int series)

  Returns the number of items in a series.

  Note: throws `ClassCastException` if the series is not from a `XYDataset`.

  Specified by:
    `getItemCount` in interface `XYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
  Returns:
    the number of items in a series.

### getHighValue

    public java.lang.Number getHighValue(int series,
                                         int item)

  Returns the high-value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `HighLowDataset`.

  Specified by:
    `getHighValue` in interface `HighLowDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the high-value for the specified series and item.

### getHigh

    public double getHigh(int series,
                          int item)

  Returns the high-value (as a double primitive) for an item within a series.

  Specified by:
    `getHigh` in interface `HighLowDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The high-value.

### getLowValue

    public java.lang.Number getLowValue(int series,
                                        int item)

  Returns the low-value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `HighLowDataset`.

  Specified by:
    `getLowValue` in interface `HighLowDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the low-value for the specified series and item.

### getLow

    public double getLow(int series,
                         int item)

  Returns the low-value (as a double primitive) for an item within a series.

  Specified by:
    `getLow` in interface `HighLowDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The low-value.

### getOpenValue

    public java.lang.Number getOpenValue(int series,
                                         int item)

  Returns the open-value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `HighLowDataset`.

  Specified by:
    `getOpenValue` in interface `HighLowDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the open-value for the specified series and item.

### getOpen

    public double getOpen(int series,
                          int item)

  Returns the open-value (as a double primitive) for an item within a series.

  Specified by:
    `getOpen` in interface `HighLowDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The open-value.

### getCloseValue

    public java.lang.Number getCloseValue(int series,
                                          int item)

  Returns the close-value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `HighLowDataset`.

  Specified by:
    `getCloseValue` in interface `HighLowDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the close-value for the specified series and item.

### getClose

    public double getClose(int series,
                           int item)

  Returns the close-value (as a double primitive) for an item within a series.

  Specified by:
    `getClose` in interface `HighLowDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The close-value.

### getVolumeValue

    public java.lang.Number getVolumeValue(int series,
                                           int item)

  Returns the volume value for the specified series and item.

  Note: throws `ClassCastException` if the series is not from a `HighLowDataset`.

  Specified by:
    `getVolumeValue` in interface `HighLowDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the volume value for the specified series and item.

### getVolume

    public double getVolume(int series,
                            int item)

  Returns the volume-value (as a double primitive) for an item within a series.

  Specified by:
    `getVolume` in interface `HighLowDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The volume-value.

### getStartXValue

    public java.lang.Number getStartXValue(int series,
                                           int item)

  Returns the starting X value for the specified series and item.

  Specified by:
    `getStartXValue` in interface `IntervalXYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the starting X value for the specified series and item.

### getEndXValue

    public java.lang.Number getEndXValue(int series,
                                         int item)

  Returns the ending X value for the specified series and item.

  Specified by:
    `getEndXValue` in interface `IntervalXYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the ending X value for the specified series and item.

### getStartYValue

    public java.lang.Number getStartYValue(int series,
                                           int item)

  Returns the starting Y value for the specified series and item.

  Specified by:
    `getStartYValue` in interface `IntervalXYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the starting Y value for the specified series and item.

### getEndYValue

    public java.lang.Number getEndYValue(int series,
                                         int item)

  Returns the ending Y value for the specified series and item.

  Specified by:
    `getEndYValue` in interface `IntervalXYDataset`
  Parameters:
    `series` - the index of the series of interest (zero-based).
    `item` - the index of the item of interest (zero-based).
  Returns:
    the ending Y value for the specified series and item.

### getParent

    public SeriesDataset getParent()

  Returns the parent Dataset of this combination. If there is more than one parent, or a child is found that is not a CombinationDataset, then returns `null`.

  Specified by:
    `getParent` in interface `CombinationDataset`
  Returns:
    the parent Dataset of this combination or `null`.

### getMap

    public int[] getMap()

  Returns a map or indirect indexing form our series into parent's series. Prior to calling this method, the client should check getParent() to make sure the CombinationDataset uses the same parent. If not, the map returned by this method will be invalid or null.

  Specified by:
    `getMap` in interface `CombinationDataset`
  Returns:
    a map or indirect indexing form our series into parent's series.
  See Also:
    `getParent()`

### getChildPosition

    public int getChildPosition(Dataset child)

  Returns the child position.

  Parameters:
    `child` - the child dataset.
  Returns:
    the position.

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