hexMA.loess {hexbin} | R Documentation

## Add Loess Fit to Hexplot

### Description

Fit a loess line using the hexagon centers of mass as the x and y coordinates and the cell counts as weights.

### Usage

    hexMA.loess(pMA, span = 0.4, col = "red", n = 200)
    hexVP.loess(hbin, hvp = NULL, span = 0.4, col = "red", n = 200)

### Arguments

`hbin` | an object of class `hexbin`, see `hexbin`.
`hvp` | A `hexViewport` object.
`pMA` | the list returned by `plotMAhex`.
`span` | the parameter alpha which controls the degree of smoothing.
`col` | line color for the loess fit.
`n` | number of points at which the fit should be evaluated.

### Value

Returns invisibly the object associated with the loess fit.

### Author(s)

Nicholas Lewin-Koh

### See Also

`hexVP.abline`, `plotMAhex`, `gplot.hexbin`, `hexViewport`; `loess`

### Examples

      if(require(marray)){
        data(swirl)
        hb <- plotMAhex(swirl[,1], main = "M vs A plot with hexagons", legend=0)
        hexVP.abline(hb$plot, h=0, col= gray(.6))
        hexMA.loess(hb)
      }

[Package hexbin version 1.18.0 Index]