R: Depth Contours

depth.contours.ddalpha {ddalpha} | R Documentation

## Depth Contours

### Description

Builds the data depth contours for multiclass 2-dimensional data using the trained classifier. Also accessible from `plot.ddalpha`.

### Usage

    depth.contours.ddalpha(ddalpha,
                  main = "", xlab="", ylab = "",
                  drawplot = T, frequency=100, levels = 10, drawsep = T, ...)

### Arguments

`ddalpha` | DDα-classifier (obtained by `ddalpha.train`).
`main` | an overall title for the plot: see `title`
`xlab, ylab` | labels of the axes
`drawplot` | if set to false, the contours are built on the existing plot.
`frequency` | number of points on each direction, x and y. Impacts the smoothness of the contours.
`levels` | numeric vector of levels at which to draw contour lines. If the vector contains only ONE element, the levels are generated automatically as `seq(0, max(depth), length.out = levels)`.
`drawsep` | draws the separation on the DD-plot (currently for 2 classes and not for knn)
`...` | additional parameters passed to the depth functions and to `plot`

### See Also

`depth.`, `depth.contours`, `depth.graph`.

### Examples

    ## Not run:

    par(mfrow = c(2,2))
    data(hemophilia)

    ddalpha = ddalpha.train(hemophilia, depth = "none")
    depth.contours.ddalpha(ddalpha, main = "data")

    for (depth in c("zonoid", "Mahalanobis", "projection", "spatial")){
      ddalpha = ddalpha.train(hemophilia, depth = depth)
      depth.contours.ddalpha(ddalpha, main = depth)
    }

    for (depth in c("halfspace", "simplicial", "simplicialVolume")){
      ddalpha = ddalpha.train(hemophilia, depth = depth, exact = T)
      depth.contours.ddalpha(ddalpha, main = depth)
    }

    ## End(Not run)

[Package ddalpha version 1.3.4 Index]