FreeHEP API
Version 3.2.1

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 IHistogram2D along the x axis.
 double meanY()
          The mean of the IHistogram2D along the y axis.
 double rmsX()
          The RMS of the IHistogram2D along the x axis.
 double rmsY()
          The RMS 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, 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.

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.

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 IHistogram2D along the x axis.

Returns:
The mean of the IHistogram2D along the x axis.

meanY

public double meanY()
The mean 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 IHistogram2D along the x axis.

Returns:
The RMS if the IHistogram2D along the x axis.

rmsY

public double rmsY()
The RMS 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.

FreeHEP API
Version 3.2.1

Copyright © 2000-2003 AIDA Team, All Rights Reserved.