flexclust: image-methods – R documentation

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flexclust

image-methods

Methods for Function image in Package ‘flexclust’

Description

Image plot of cluster segments overlaid by neighbourhood graph.

Usage

## S4 method for signature 'kcca'
image(x, which = 1:2, npoints = 100,
         xlab = "", ylab = "", fastcol = TRUE, col=NULL,
         clwd=0, graph=TRUE, ...)

Arguments

`x`	An object of class `"kcca"`.
`which`	Index number of dimensions of input space to plot.
`npoints`	Number of grid points for image.
`fastcol`	If `TRUE`, a greedy algorithm is used for the background colors of the segments, which may result in neighbouring segments having the same color. If `FALSE`, neighbouring segments always have different colors at a speed penalty.
`col`	Vector of background colors for the segments.
`clwd`	Line width of contour lines at cluster boundaries, use larger values for `npoints` than the default to get smooth lines. (Warning: We really need a smarter way to draw cluster boundaries!)
`graph`	Logical, add a neighborhood graph to the plot?
`xlab, ylab, ...`	Graphical parameters.

Details

This works only for "kcca" objects, no method is available for "kccasimple" objects.

Author(s)

Friedrich Leisch