hep.aida
Interface IAxis

All Superinterfaces:

Serializable

All Known Implementing Classes:

FixedAxis, VariableAxis

public interface IAxis

extends Serializable

An IAxis represents a binned histogram axis. A 1D Histogram would have one Axis representing the X axis, while a 2D Histogram would have two axes representing the X and Y Axis.

Version:

1.0, 23/03/2000

Field Summary

static long

serialVersionUID

Method Summary

double	binCentre(int index) Centre of the bin specified.
double	binLowerEdge(int index) Lower edge of the specified bin.
int	bins() The number of bins (excluding underflow and overflow) on the axis.
double	binUpperEdge(int index) Upper edge of the specified bin.
double	binWidth(int index) Width of the bin specified.
int	coordToIndex(double coord) Converts a coordinate on the axis to a bin number.
double	lowerEdge() Lower axis edge.
double	upperEdge() Upper axis edge.

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Method Detail

binCentre

public double binCentre(int index)

Centre of the bin specified.

Parameters:

index - Bin number (0...bins()-1) or OVERFLOW or UNDERFLOW.

binLowerEdge

public double binLowerEdge(int index)

Lower edge of the specified bin.

Parameters:

index - Bin number (0...bins()-1) or OVERFLOW or UNDERFLOW.

Returns:

the lower edge of the bin; for the underflow bin this is Double.NEGATIVE_INFINITY.

bins

public int bins()

The number of bins (excluding underflow and overflow) on the axis.

binUpperEdge

public double binUpperEdge(int index)

Upper edge of the specified bin.

Parameters:

index - Bin number (0...bins()-1) or OVERFLOW or UNDERFLOW.

Returns:

the upper edge of the bin; for the overflow bin this is Double.POSITIVE_INFINITY.

binWidth

public double binWidth(int index)

Width of the bin specified.

Parameters:

index - Bin number (0...bins()-1) or OVERFLOW or UNDERFLOW.

coordToIndex

public int coordToIndex(double coord)

Converts a coordinate on the axis to a bin number. If the coordinate is < lowerEdge returns UNDERFLOW, and if the coordinate is >= upperEdge returns OVERFLOW.

lowerEdge

public double lowerEdge()

Lower axis edge.

upperEdge

public double upperEdge()

Upper axis edge.