hep.aida
Interface IHistogram2D

All Superinterfaces:

IBaseHistogram, IHistogram

public interface IHistogram2D

extends IHistogram

User level interface to 2D Histogram.

Author:

The AIDA team (http://aida.freehep.org/)

Method Summary

void	add(IHistogram2D hist) Add to this IHistogram2D the contents of another IHistogram2D.
int	binEntries(int indexX, int indexY) Number of entries in the corresponding bin (ie the number of times fill was called for this bin).
int	binEntriesX(int index) Sum of all the entries of the bins along a given x bin.
int	binEntriesY(int index) Sum of all the entries of the bins along a given y bin.
double	binError(int indexX, int indexY) The error of a given bin.
double	binHeight(int indexX, int indexY) Total height of a give bin (ie the sum of the weights in this bin).
double	binHeightX(int index) Sum of all the heights of the bins along a given x bin.
double	binHeightY(int index) Sum of all the heights of the bins along a given y bin.
double	binMeanX(int indexX, int indexY) The weighted mean along the x axis of a given bin.
double	binMeanY(int indexX, int indexY) The weighted mean along the y axis of a given bin.
int	coordToIndexX(double coord) Get the bin number corresponding to a given coordinate along the x axis.
int	coordToIndexY(double coord) Get the bin number corresponding to a given coordinate along the y axis.
void	fill(double x, double y) Fill the IHistogram2D with a couple of values and the corresponding weight.
void	fill(double x, double y, double weight) Fill the IHistogram2D with a couple of values and the corresponding weight.
double	meanX() The mean of the in-range data of the IHistogram2D along the x axis.
double	meanY() The mean of the in-range data of the IHistogram2D along the y axis.
double	rmsX() The RMS of the in-range data of the IHistogram2D along the x axis.
double	rmsY() The RMS of the in-range data of the IHistogram2D along the y axis.
IAxis	xAxis() Get the x axis of the IHistogram2D.
IAxis	yAxis() Get the y axis of the IHistogram2D.

Methods inherited from interface hep.aida.IHistogram

allEntries, equivalentBinEntries, extraEntries, maxBinHeight, minBinHeight, scale, sumAllBinHeights, sumBinHeights, sumExtraBinHeights

Methods inherited from interface hep.aida.IBaseHistogram

annotation, dimension, entries, nanEntries, reset, setTitle, title

Method Detail

fill

public void fill(double x,
                 double y)
          throws IllegalArgumentException

Fill the IHistogram2D with a couple of values and the corresponding weight. If either a coordinate or the weight is NaN the entry will be recorded but it will not contribue to the statistics.

Parameters:

x - The x value to be filled in.

y - The y value to be filled in.

Throws:

IllegalArgumentException - If the weight is <0 or >1 (?).

fill

public void fill(double x,
                 double y,
                 double weight)
          throws IllegalArgumentException

Fill the IHistogram2D with a couple of values and the corresponding weight. If either a coordinate or the weight is NaN the entry will be recorded but it will not contribue to the statistics.

Parameters:

x - The x value to be filled in.

y - The y value to be filled in.

weight - The corresponding weight (by default 1).

Throws:

IllegalArgumentException - If the weight is <0 or >1 (?).

binMeanX

public double binMeanX(int indexX,
                       int indexY)
                throws IllegalArgumentException

The weighted mean along the x axis of a given bin.

Parameters:

indexX - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

indexY - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The mean of the corresponding bin along the x axis.

Throws:

IllegalArgumentException - If the indexes are not a valid bin number.

binMeanY

public double binMeanY(int indexX,
                       int indexY)
                throws IllegalArgumentException

The weighted mean along the y axis of a given bin.

Parameters:

indexX - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

indexY - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The mean of the corresponding bin along the y axis.

Throws:

IllegalArgumentException - If the indexes are not a valid bin number.

binEntries

public int binEntries(int indexX,
                      int indexY)
               throws IllegalArgumentException

Number of entries in the corresponding bin (ie the number of times fill was called for this bin).

Parameters:

indexX - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

indexY - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The number of entries in the corresponding bin.

Throws:

IllegalArgumentException - If the indexes are not a valid bin number.

binEntriesX

public int binEntriesX(int index)
                throws IllegalArgumentException

Sum of all the entries of the bins along a given x bin. This is equivalent to projectionX().binEntries(index).

Parameters:

index - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The number of entries in the corresponding set of bins.

Throws:

IllegalArgumentException - If the index id not a valid bin number.

binEntriesY

public int binEntriesY(int index)
                throws IllegalArgumentException

Sum of all the entries of the bins along a given y bin. This is equivalent to projectionY().binEntries(index).

Parameters:

index - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The number of entries in the corresponding set of bins.

Throws:

IllegalArgumentException - If the index id not a valid bin number.

binHeight

public double binHeight(int indexX,
                        int indexY)
                 throws IllegalArgumentException

Total height of a give bin (ie the sum of the weights in this bin).

Parameters:

indexX - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

indexY - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The height of the corresponding bin.

Throws:

IllegalArgumentException - If the indexes are not a valid bin number.

binHeightX

public double binHeightX(int index)
                  throws IllegalArgumentException

Sum of all the heights of the bins along a given x bin. This is equivalent to projectionX().binHeight(index).

Parameters:

index - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The sum of the heights in the corresponding set of bins.

Throws:

IllegalArgumentException - If the index id not a valid bin number.

binHeightY

public double binHeightY(int index)
                  throws IllegalArgumentException

Sum of all the heights of the bins along a given y bin. This is equivalent to projectionY().binHeight(index).

Parameters:

index - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The sum of the heights in the corresponding set of bins.

Throws:

IllegalArgumentException - If the index id not a valid bin number.

binError

public double binError(int indexX,
                       int indexY)
                throws IllegalArgumentException

The error of a given bin.

Parameters:

indexX - The x bin number (0...N-1) or OVERFLOW or UNDERFLOW.

indexY - The y bin number (0...N-1) or OVERFLOW or UNDERFLOW.

Returns:

The error on the corresponding bin.

Throws:

IllegalArgumentException - If the indexes are not a valid bin number.

meanX

public double meanX()

The mean of the in-range data of the IHistogram2D along the x axis.

Returns:

The mean of the IHistogram2D along the x axis.

meanY

public double meanY()

The mean of the in-range data of the IHistogram2D along the y axis.

Returns:

The mean of the IHistogram2D along the y axis.

rmsX

public double rmsX()

The RMS of the in-range data of the IHistogram2D along the x axis.

Returns:

The RMS if the IHistogram2D along the x axis.

rmsY

public double rmsY()

The RMS of the in-range data of the IHistogram2D along the y axis.

Returns:

The RMS if the IHistogram2D along the y axis.

xAxis

public IAxis xAxis()

Get the x axis of the IHistogram2D.

Returns:

The x coordinate IAxis.

yAxis

public IAxis yAxis()

Get the y axis of the IHistogram2D.

Returns:

The y coordinate IAxis.

coordToIndexX

public int coordToIndexX(double coord)

Get the bin number corresponding to a given coordinate along the x axis. This is a convenience method, equivalent to xAxis().coordToIndex(coord).

Parameters:

coord - The coordinalte along the x axis.

Returns:

The corresponding bin number.

See Also:

IAxis.coordToIndex(double)

coordToIndexY

public int coordToIndexY(double coord)

Get the bin number corresponding to a given coordinate along the y axis. This is a convenience method, equivalent to yAxis().coordToIndex(coord).

Parameters:

coord - The coordinalte along the y axis.

Returns:

The corresponding bin number.

See Also:

IAxis.coordToIndex(double)

add

public void add(IHistogram2D hist)
         throws IllegalArgumentException

Add to this IHistogram2D the contents of another IHistogram2D.

Parameters:

hist - The IHistogram2D to be added to this IHistogram2D.

Throws:

IllegalArgumentException - If the IHistogram2Ds binnings are incompatible.