hep.aida.ref.histogram
Class FixedAxis

java.lang.Object
  hep.aida.ref.histogram.FixedAxis

All Implemented Interfaces:

IAxis, Serializable

public class FixedAxis
extends Object
implements IAxis, Serializable

Fixed-width axis; A reference implementation of hep.aida.IAxis.

See Also:

Serialized Form

Field Summary

Fields inherited from interface hep.aida.IAxis

OVERFLOW_BIN, UNDERFLOW_BIN

Constructor Summary

FixedAxis(int bins, double min, double max)
Create an Axis

Method Summary

double	binCenter(int index) Get the center of the specified bin.
double	binLowerEdge(int index) Get the lower edge of a bin.
int	bins() Get the number of bins in the Axis.
double	binUpperEdge(int index) Get the upper edge of a bin.
double	binWidth(int index) Get the bin width.
int	coordToIndex(double coord) Get the bin's index corresponding to an axis's value.
boolean	equals(Object o) Check if two Axis are equal.
boolean	isFixedBinning() Check if the IAxis has fixed binning, i.e.
double	lowerEdge() Get the Axis lower edge.
double	upperEdge() Get the Axis upper edge.

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FixedAxis

public FixedAxis(int bins,
                 double min,
                 double max)

Create an Axis

Parameters:

bins - Number of bins

min - Minimum for axis

max - Maximum for axis

Method Detail

equals

public boolean equals(Object o)

Check if two Axis are equal.

Overrides:

equals in class Object

Parameters:

o - the Object to check

Returns:

true if o is an instance of FixedAxis and it has the same number of bins, minimum and bin width.

binCenter

public double binCenter(int index)

Description copied from interface: IAxis

Get the center of the specified bin.

Specified by:

binCenter in interface IAxis

Parameters:

index - The bin number: 0 to bins()-1) for the in-range bins or OVERFLOW or UNDERFLOW.

Returns:

The center of the corresponding bin. For in-range bins the middle of the upper and lower edge of the bin is returned; for out-of-range bins +/- infinity is returned.

bins

public int bins()

Get the number of bins in the Axis.

Specified by:

bins in interface IAxis

Returns:

the number of bins.

binLowerEdge

public double binLowerEdge(int index)

Get the lower edge of a bin.

Specified by:

binLowerEdge in interface IAxis

Parameters:

index - the bin's index

Returns:

the bin's lower edge. If index corresponds to the UNDERFLOW_BIN, Double.NEGATIVE_INFINITY is returned. If index corresponds to OVERFLOW_BIN, the upper edge of the axis is returned.

binUpperEdge

public double binUpperEdge(int index)

Get the upper edge of a bin.

Specified by:

binUpperEdge in interface IAxis

Parameters:

index - the bin's index

Returns:

the bin's upper edge. If index corresponds to the OVERFLOW_BIN, Double.POSITIVE_INFINITY is returned. If index corresponds to UNDERFLOW_BIN, the lower edge of the axis is returned.

binWidth

public double binWidth(int index)

Get the bin width.

Specified by:

binWidth in interface IAxis

Parameters:

index - the bin's index. For a Fixed Axis the bin's width is constant.

Returns:

the bin's width.

coordToIndex

public int coordToIndex(double coord)

Get the bin's index corresponding to an axis's value.

Specified by:

coordToIndex in interface IAxis

Parameters:

coord - an axis value

Returns:

the bin's index corresponding to coord

lowerEdge

public double lowerEdge()

Get the Axis lower edge.

Specified by:

lowerEdge in interface IAxis

Returns:

the axis lower edge

upperEdge

public double upperEdge()

Get the Axis upper edge.

Specified by:

upperEdge in interface IAxis

Returns:

the axis upper edge

isFixedBinning

public boolean isFixedBinning()

Description copied from interface: IAxis

Check if the IAxis has fixed binning, i.e. if all the bins have the same width.

Specified by:

isFixedBinning in interface IAxis

Returns:

true if the binning is fixed, false otherwise.