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## org.jfree.data.time
Class TimeSeriesCollection

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

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

public class TimeSeriesCollection
extends AbstractIntervalXYDataset
implements 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

Field Summary
`static int` | `END` Useful constant for controlling the x-value returned for a time period.
`static int` | `MIDDLE` Useful constant for controlling the x-value returned for a time period.
`static int` | `START` Useful constant for controlling the x-value returned for a time period.

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.
`boolean` | `equals(java.lang.Object obj)` Tests this time series collection for equality with another object.
`boolean` | `getDomainIsPointsInTime()` Returns a flag that controls whether the domain is treated as 'points in time'.
`Range` | `getDomainRange()` Returns the range of the values in the series domain.
`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.
`int` | `getItemCount(int series)` Returns the number of items in the specified series.
`java.lang.Number` | `getMaximumDomainValue()` Returns the maximum value in the dataset (or null if all the values in the domain are null).
`java.lang.Number` | `getMinimumDomainValue()` Returns the minimum value in the dataset (or null if all the values in the domain are null).
`int` | `getPosition()` Deprecated. Use getXPosition().
`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 name)` Returns the series with the specified name, or `null` if there is no such series.
`int` | `getSeriesCount()` Returns the number of series in the collection.
`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.
`int[]` | `getSurroundingItems(int series, long milliseconds)` Returns the indices of the two data items surrounding a particular millisecond value.
`TimePeriodAnchor` | `getXPosition()` Returns the position within each time period that is used for the X value when the collection is used as an `XYDataset`.
`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.
`int` | `hashCode()` Returns a hash code value for the object.
`void` | `removeAllSeries()` Removes all the series from the collection.
`void` | `removeSeries(int index)` Removes a series from the collection.
`void` | `removeSeries(TimeSeries series)` Removes the specified series from the collection.
`void` | `setDomainIsPointsInTime(boolean flag)` Sets a flag that controls whether the domain is treated as 'points in time', or time periods.
`void` | `setPosition(int position)` Deprecated. Use setXPosition(...).
`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`.

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
`finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

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

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

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

Field Detail

### START

    public static final int START

  Useful constant for controlling the x-value returned for a time period.

  See Also:
    Constant Field Values

### MIDDLE

    public static final int MIDDLE

  Useful constant for controlling the x-value returned for a time period.

  See Also:
    Constant Field Values

### END

    public static final int END

  Useful constant for controlling the x-value returned for a time period.

  See Also:
    Constant Field Values

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.

### 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.

### 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` - the series.
  `zone` - the timezone.

Method Detail

### getPosition

    public int getPosition()

  Deprecated. Use getXPosition().

  Returns the position of the x-value returned for a time period (START, MIDDLE, or END).

  Returns:
    The position.

### setPosition

    public void setPosition(int position)

  Deprecated. Use setXPosition(...).

  Sets the position - this controls the x-value that is returned for a particular time period.

  Use the constants `START`, `MIDDLE` and `END`.

  Parameters:
    `position` - the position.

### 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.

### 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`. A `DatasetChangeEvent` is sent to all registered listeners.

  Parameters:
    `anchor` - the anchor position.

### getDomainIsPointsInTime

    public boolean getDomainIsPointsInTime()

  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)

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

  Parameters:
    `flag` - The new value of the flag.

### 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 name)

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

  Parameters:
    `name` - the series name.
  Returns:
    The series with the given name.

### getSeriesName

    public java.lang.String getSeriesName(int series)

  Returns the name of a series.

  This method is provided for convenience.

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

### addSeries

    public void addSeries(TimeSeries series)

  Adds a series to the collection.

  Notifies all registered listeners that the dataset has changed.

  Parameters:
    `series` - the time series.

### removeSeries

    public void removeSeries(TimeSeries series)

  Removes the specified series from the collection.

  Parameters:
    `series` - the series to remove.

### 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. A `DatasetChangeEvent` is sent 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 index of the series of interest (zero-based).
  Returns:
    the number of items in the specified series.

### getXValue

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

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

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

### 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.

### 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 series (zero-based index).
    `item` - The item (zero-based index).
  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 series (zero-based index).
    `item` - The item (zero-based index).
  Returns:
    the ending 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.

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

### getMinimumDomainValue

    public java.lang.Number getMinimumDomainValue()

  Returns the minimum value in the dataset (or null if all the values in the domain are null).

  Specified by:
    `getMinimumDomainValue` in interface `DomainInfo`
  Returns:
    the minimum value.

### getMaximumDomainValue

    public java.lang.Number getMaximumDomainValue()

  Returns the maximum value in the dataset (or null if all the values in the domain are null).

  Specified by:
    `getMaximumDomainValue` in interface `DomainInfo`
  Returns:
    the maximum value.

### getDomainRange

    public Range getDomainRange()

  Returns the range of the values in the series domain.

  Specified by:
    `getDomainRange` in interface `DomainInfo`
  Returns:
    The range (possibly `null`).

### equals

    public boolean equals(java.lang.Object obj)

  Tests this time series collection for equality with another object.

  Parameters:
    `obj` - the other object.
  Returns:
    A boolean.

### hashCode

    public int hashCode()

  Returns a hash code value for the object.

  Returns:
    the hashcode

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