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## hep.aida.bin
Class AbstractBin

    java.lang.Object
      cern.colt.PersistentObject
          hep.aida.bin.AbstractBin

All Implemented Interfaces:
  Cloneable, Serializable

Direct Known Subclasses:
  AbstractBin1D

public abstract class AbstractBin
extends PersistentObject

Abstract base class for all arbitrary-dimensional bins consumes `double` elements. First see the package summary and javadoc tree view to get the broad picture.

This class is fully thread safe (all public methods are synchronized). Thus, you can have one or more threads adding to the bin as well as one or more threads reading and viewing the statistics of the bin while it is filled. For high performance, add data in large chunks (buffers) via method `addAllOf` rather than piecewise via method `add`.

Version:
  0.9, 03-Jul-99
See Also:
  Serialized Form

Field Summary

Fields inherited from class cern.colt.PersistentObject
`serialVersionUID`

Method Summary
`double` | `center()` Returns `center(0)`.
`double` | `center(int dimension)` Returns a custom definable "center" measure; override this method if necessary.
`abstract void` | `clear()` Removes all elements from the receiver.
`boolean` | `equals(Object otherObj)` Returns whether two objects are equal; This default implementation returns true if the other object is a bin and has the same size, value, error and center.
`double` | `error()` Returns `error(0)`.
`double` | `error(int dimension)` Returns a custom definable error measure; override this method if necessary.
`abstract boolean` | `isRebinnable()` Returns whether a client can obtain all elements added to the receiver.
`double` | `offset()` Returns `offset(0)`.
`double` | `offset(int dimension)` Returns the relative or absolute position for the center of the bin; override this method if necessary.
`abstract int` | `size()` Returns the number of elements contained.
`String` | `toString()` Returns a String representation of the receiver.
`void` | `trimToSize()` Trims the capacity of the receiver to be the receiver's current size.
`double` | `value()` Returns `value(0)`.
`double` | `value(int dimension)` Returns a custom definable "value" measure; override this method if necessary.

Methods inherited from class cern.colt.PersistentObject
`clone`

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

Method Detail

### center

    public final double center()

  Returns `center(0)`.

### center

    public double center(int dimension)

  Returns a custom definable "center" measure; override this method if necessary. Returns the absolute or relative center of this bin. For example, the center of gravity. The real absolute center can be obtained as follow: `partition(i).min(j) * bin(j).offset() + bin(j).center(i)`, where `i` is the dimension. and `j` is the index of this bin.

  This default implementation always returns 0.5.

  Parameters:
    `dimension` - the dimension to be considered (zero based).

### clear

    public abstract void clear()

  Removes all elements from the receiver. The receiver will be empty after this call returns.

### equals

    public boolean equals(Object otherObj)

  Returns whether two objects are equal; This default implementation returns true if the other object is a bin and has the same size, value, error and center.

### error

    public final double error()

  Returns `error(0)`.

### error

    public double error(int dimension)

  Returns a custom definable error measure; override this method if necessary. This default implementation always returns `0`.

  Parameters:
    `dimension` - the dimension to be considered.

### isRebinnable

    public abstract boolean isRebinnable()

  Returns whether a client can obtain all elements added to the receiver. In other words, tells whether the receiver internally preserves all added elements. If the receiver is rebinnable, the elements can be obtained via `elements()` methods.

### offset

    public final double offset()

  Returns `offset(0)`.

### offset

    public double offset(int dimension)

  Returns the relative or absolute position for the center of the bin; override this method if necessary. Returns 1.0 if a relative center is stored in the bin. Returns 0.0 if an absolute center is stored in the bin.

  This default implementation always returns 1.0 (relative).

  Parameters:
    `dimension` - the index of the considered dimension (zero based);

### size

    public abstract int size()

  Returns the number of elements contained.

### toString

    public String toString()

  Returns a String representation of the receiver.

### trimToSize

    public void trimToSize()

  Trims the capacity of the receiver to be the receiver's current size. Releases any superfluos internal memory. An application can use this operation to minimize the storage of the receiver. This default implementation does nothing.

### value

    public final double value()

  Returns `value(0)`.

### value

    public double value(int dimension)

  Returns a custom definable "value" measure; override this method if necessary.

  This default implementation always returns 0.0.

  Parameters:
    `dimension` - the dimension to be considered.

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