breakpoints.ProbBin {rflowcyt} | R Documentation

## Obtain break points for Probability binning

### Description

To define the break points in data.var in which there are N observations in each bin.

### Usage

    breakpoints.ProbBin(data.var, N)

### Arguments

`data.var` | a vector of numeric data values for the break points to be determined
`N` | the number of data points between two breaks

### Details

This function is used to determine the break points that can be used to specify a `ProbBin.FCS` object as well as a `hist` object.

Please note that each bin in the histograms (in `ProbBin.FCS`) will be determined such that the end point is included (ie, for a<b, (a,b] is the bin interval for break points a & b.

Thus, the output of this function will have min(data.var)-1 as the first break point and max(data.var) as the last break point such that (min(data.var)-1, min(data.var)] is the first bin/interval of the break points.

### Value

a vector of the numerical breaks

### Author(s)

Zoe Moodie, A.J. Rossini, J.Y. Wan

### References

Mario Roederer, et al. "Probability Binning Comparison: A Metric for Quantitating Univariate Distribution Differences" Cytometry 45:37-46 (2001).

### See Also

`ProbBin.FCS` `hist`

### Examples

      x <- 1:23
      N <- 3

    ## making a series of cutpoints which have
    ## an equal number of counts in each bin
      breaks <- breakpoints.ProbBin(x, N)

      hist(x, br=breaks, plot=FALSE)

[Package rflowcyt version 1.0.1 Index]