R: 2D binning

bin2 {ash} | R Documentation

## 2D binning

### Description

Bin bivariate data x

### Usage

    bin2(x, ab, nbin)

### Arguments

`x` | (input matrix with 2 columns) data sample
`ab` | (input 2 x 2 matrix) rows 1 and 2 contain x and y axis bin intervals, respectively. If not specified, the ranges are stretched by 5% at each end for each dimension.
`nbin` | (input vector of length 2) number of bins along x and y axes. Default is 20 by 20.

### Value

`bin2` returns a list including the bivariate bin matrix and the number of points outside the ab rectangle.

### See Also

`ash2`

### Examples

    x <- matrix( rnorm(200), 100 , 2)       # bivariate normal n=100
    ab <- matrix( c(-5,-5,5,5), 2, 2)       # interval [-5,5) x [-5,5)
    nbin <- c( 20, 20)                      # 400 bins
    bins <- bin2(x, ab, nbin)               # bin counts,ab,nskip

[Package ash version 1.0-15 Index]