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## org.jfree.data.time
Class TimeSeriesCollection

    java.lang.Object
      org.jfree.data.general.AbstractDataset
          org.jfree.data.general.AbstractSeriesDataset
              org.jfree.data.xy.AbstractXYDataset
                  org.jfree.data.xy.AbstractIntervalXYDataset
                      org.jfree.data.time.TimeSeriesCollection

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

    public class TimeSeriesCollection

extends AbstractIntervalXYDataset
implements XYDataset, IntervalXYDataset, DomainInfo, java.io.Serializable

A collection of time series objects. This class implements the `XYDataset` interface, as well as the extended `IntervalXYDataset` interface. This makes it a convenient dataset for use with the `XYPlot` class.

See Also:
  Serialized Form

Constructor Summary
`TimeSeriesCollection()` Constructs an empty dataset, tied to the default timezone.
`TimeSeriesCollection(TimeSeries series)` Constructs a dataset containing a single series (more can be added), tied to the default timezone.
`TimeSeriesCollection(TimeSeries series, java.util.TimeZone zone)` Constructs a dataset containing a single series (more can be added), tied to a specific timezone.
`TimeSeriesCollection(java.util.TimeZone zone)` Constructs an empty dataset, tied to a specific timezone.

Method Summary
`void` | `addSeries(TimeSeries series)` Adds a series to the collection and sends a `DatasetChangeEvent` to all registered listeners.
`boolean` | `equals(java.lang.Object obj)` Tests this time series collection for equality with another object.
`Range` | `getDomainBounds(boolean includeInterval)` Returns the range of the values in this dataset's domain.
`boolean` | `getDomainIsPointsInTime()` Deprecated. This flag is no longer used (as of 1.0.1).
`double` | `getDomainLowerBound(boolean includeInterval)` Returns the minimum x-value in the dataset.
`double` | `getDomainUpperBound(boolean includeInterval)` Returns the maximum x-value in the dataset.
`java.lang.Number` | `getEndX(int series, int item)` Returns the ending X value for the specified series and item.
`java.lang.Number` | `getEndY(int series, int item)` Returns the ending Y value for the specified series and item.
`int` | `getItemCount(int series)` Returns the number of items in the specified series.
`java.util.List` | `getSeries()` Returns a list of all the series in the collection.
`TimeSeries` | `getSeries(int series)` Returns a series.
`TimeSeries` | `getSeries(java.lang.String key)` Returns the series with the specified key, or `null` if there is no such series.
`int` | `getSeriesCount()` Returns the number of series in the collection.
`java.lang.Comparable` | `getSeriesKey(int series)` Returns the key for a series.
`java.lang.Number` | `getStartX(int series, int item)` Returns the starting X value for the specified series and item.
`java.lang.Number` | `getStartY(int series, int item)` Returns the starting Y value for the specified series and item.
`int[]` | `getSurroundingItems(int series, long milliseconds)` Returns the indices of the two data items surrounding a particular millisecond value.
`java.lang.Number` | `getX(int series, int item)` Returns the x-value for the specified series and item.
`protected long` | `getX(RegularTimePeriod period)` Returns the x-value for a time period.
`TimePeriodAnchor` | `getXPosition()` Returns the position within each time period that is used for the X value when the collection is used as an `XYDataset`.
`double` | `getXValue(int series, int item)` Returns the x-value (as a double primitive) for an item within a series.
`java.lang.Number` | `getY(int series, int item)` Returns the y-value for the specified series and item.
`int` | `hashCode()` Returns a hash code value for the object.
`void` | `removeAllSeries()` Removes all the series from the collection and sends a `DatasetChangeEvent` to all registered listeners.
`void` | `removeSeries(int index)` Removes a series from the collection.
`void` | `removeSeries(TimeSeries series)` Removes the specified series from the collection and sends a `DatasetChangeEvent` to all registered listeners.
`void` | `setDomainIsPointsInTime(boolean flag)` Deprecated. This flag is no longer used, as of 1.0.1. The `includeInterval` flag in methods such as `getDomainBounds(boolean)` makes this unnecessary.
`void` | `setXPosition(TimePeriodAnchor anchor)` Sets the position within each time period that is used for the X values when the collection is used as an `XYDataset`, then sends a `DatasetChangeEvent` is sent to all registered listeners.

Methods inherited from class org.jfree.data.xy.AbstractIntervalXYDataset
`getEndXValue, getEndYValue, getStartXValue, getStartYValue`

Methods inherited from class org.jfree.data.xy.AbstractXYDataset
`getDomainOrder, getYValue`

Methods inherited from class org.jfree.data.general.AbstractSeriesDataset
`indexOf, seriesChanged`

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

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

Methods inherited from interface org.jfree.data.xy.IntervalXYDataset
`getEndXValue, getEndYValue, getStartXValue, getStartYValue`

Constructor Detail

### TimeSeriesCollection

    public TimeSeriesCollection()

  Constructs an empty dataset, tied to the default timezone.

### TimeSeriesCollection

    public TimeSeriesCollection(java.util.TimeZone zone)

  Constructs an empty dataset, tied to a specific timezone.

  Parameters:
    `zone` - the timezone (`null` permitted, will use `TimeZone.getDefault()` in that case).

### TimeSeriesCollection

    public TimeSeriesCollection(TimeSeries series)

  Constructs a dataset containing a single series (more can be added), tied to the default timezone.

  Parameters:
    `series` - the series (`null` permitted).

### TimeSeriesCollection

    public TimeSeriesCollection(TimeSeries series,
                                java.util.TimeZone zone)

  Constructs a dataset containing a single series (more can be added), tied to a specific timezone.

  Parameters:
    `series` - a series to add to the collection (`null` permitted).
    `zone` - the timezone (`null` permitted, will use `TimeZone.getDefault()` in that case).

Method Detail

### getDomainIsPointsInTime

    public boolean getDomainIsPointsInTime()

  Deprecated. This flag is no longer used (as of 1.0.1).

  Returns a flag that controls whether the domain is treated as 'points in time'. This flag is used when determining the max and min values for the domain. If `true`, then only the x-values are considered for the max and min values. If `false`, then the start and end x-values will also be taken into consideration.

  Returns:
    The flag.

### setDomainIsPointsInTime

    public void setDomainIsPointsInTime(boolean flag)

  Deprecated. This flag is no longer used, as of 1.0.1. The `includeInterval` flag in methods such as `getDomainBounds(boolean)` makes this unnecessary.

  Sets a flag that controls whether the domain is treated as 'points in time', or time periods.

  Parameters:
    `flag` - the flag.

### getXPosition

    public TimePeriodAnchor getXPosition()

  Returns the position within each time period that is used for the X value when the collection is used as an `XYDataset`.

  Returns:
    The anchor position (never `null`).

### setXPosition

    public void setXPosition(TimePeriodAnchor anchor)

  Sets the position within each time period that is used for the X values when the collection is used as an `XYDataset`, then sends a `DatasetChangeEvent` is sent to all registered listeners.

  Parameters:
    `anchor` - the anchor position (`null` not permitted).

### getSeries

    public java.util.List getSeries()

  Returns a list of all the series in the collection.

  Returns:
    The list (which is unmodifiable).

### getSeriesCount

    public int getSeriesCount()

  Returns the number of series in the collection.

  Specified by:
    `getSeriesCount` in interface `SeriesDataset`
  Specified by:
    `getSeriesCount` in class `AbstractSeriesDataset`
  Returns:
    The series count.

### getSeries

    public TimeSeries getSeries(int series)

  Returns a series.

  Parameters:
    `series` - the index of the series (zero-based).
  Returns:
    The series.

### getSeries

    public TimeSeries getSeries(java.lang.String key)

  Returns the series with the specified key, or `null` if there is no such series.

  Parameters:
    `key` - the series key (`null` permitted).
  Returns:
    The series with the given key.

### getSeriesKey

    public java.lang.Comparable getSeriesKey(int series)

  Returns the key for a series.

  Specified by:
    `getSeriesKey` in interface `SeriesDataset`
  Specified by:
    `getSeriesKey` in class `AbstractSeriesDataset`
  Parameters:
    `series` - the index of the series (zero-based).
  Returns:
    The key for a series.

### addSeries

    public void addSeries(TimeSeries series)

  Adds a series to the collection and sends a `DatasetChangeEvent` to all registered listeners.

  Parameters:
    `series` - the series (`null` not permitted).

### removeSeries

    public void removeSeries(TimeSeries series)

  Removes the specified series from the collection and sends a `DatasetChangeEvent` to all registered listeners.

  Parameters:
    `series` - the series (`null` not permitted).

### removeSeries

    public void removeSeries(int index)

  Removes a series from the collection.

  Parameters:
    `index` - the series index (zero-based).

### removeAllSeries

    public void removeAllSeries()

  Removes all the series from the collection and sends a `DatasetChangeEvent` to all registered listeners.

### getItemCount

    public int getItemCount(int series)

  Returns the number of items in the specified series. This method is provided for convenience.

  Specified by:
    `getItemCount` in interface `XYDataset`
  Parameters:
    `series` - the series index (zero-based).
  Returns:
    The item count.

### getXValue

    public double getXValue(int series,
                            int item)

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

  Specified by:
    `getXValue` in interface `XYDataset`
  Overrides:
    `getXValue` in class `AbstractXYDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The x-value.

### getX

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

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

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

### getX

    protected long getX(RegularTimePeriod period)

  Returns the x-value for a time period.

  Parameters:
    `period` - the time period (`null` not permitted).
  Returns:
    The x-value.

### getStartX

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

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

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

### getEndX

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

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

  Specified by:
    `getEndX` in interface `IntervalXYDataset`
  Parameters:
    `series` - The series (zero-based index).
    `item` - The item (zero-based index).
  Returns:
    The value.

### getY

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

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

  Specified by:
    `getY` in interface `XYDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The value (possibly `null`).

### getStartY

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

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

  Specified by:
    `getStartY` in interface `IntervalXYDataset`
  Parameters:
    `series` - the series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The value (possibly `null`).

### getEndY

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

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

  Specified by:
    `getEndY` in interface `IntervalXYDataset`
  Parameters:
    `series` - te series (zero-based index).
    `item` - the item (zero-based index).
  Returns:
    The value (possibly `null`).

### getSurroundingItems

    public int[] getSurroundingItems(int series,
                                     long milliseconds)

  Returns the indices of the two data items surrounding a particular millisecond value.

  Parameters:
    `series` - the series index.
    `milliseconds` - the time.
  Returns:
    An array containing the (two) indices of the items surrounding the time.

### getDomainLowerBound

    public double getDomainLowerBound(boolean includeInterval)

  Returns the minimum x-value in the dataset.

  Specified by:
    `getDomainLowerBound` in interface `DomainInfo`
  Parameters:
    `includeInterval` - a flag that determines whether or not the x-interval is taken into account.
  Returns:
    The minimum value.

### getDomainUpperBound

    public double getDomainUpperBound(boolean includeInterval)

  Returns the maximum x-value in the dataset.

  Specified by:
    `getDomainUpperBound` in interface `DomainInfo`
  Parameters:
    `includeInterval` - a flag that determines whether or not the x-interval is taken into account.
  Returns:
    The maximum value.

### getDomainBounds

    public Range getDomainBounds(boolean includeInterval)

  Returns the range of the values in this dataset's domain.

  Specified by:
    `getDomainBounds` in interface `DomainInfo`
  Parameters:
    `includeInterval` - a flag that determines whether or not the x-interval is taken into account.
  Returns:
    The range.

### equals

    public boolean equals(java.lang.Object obj)

  Tests this time series collection for equality with another object.

  Overrides:
    `equals` in class `java.lang.Object`
  Parameters:
    `obj` - the other object.
  Returns:
    A boolean.

### hashCode

    public int hashCode()

  Returns a hash code value for the object.

  Overrides:
    `hashCode` in class `java.lang.Object`
  Returns:
    The hashcode

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