class: somgrid – R documentation

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class

somgrid

Plot SOM Fits

Description

Plotting functions for SOM results.

Usage

somgrid(xdim = 8, ydim = 6, topo = c("rectangular", "hexagonal"))

## S3 method for class 'somgrid'
plot(x, type = "p", ...)

## S3 method for class 'SOM'
plot(x, ...)

Arguments

`xdim, ydim`	dimensions of the grid
`topo`	the topology of the grid.
`x`	an object inheriting from class `"somgrid"` or `"SOM"`.
`type, ...`	graphical parameters.

Details

The class "somgrid" records the coordinates of the grid to be used for (batch or on-line) SOM: this has a plot method.

The plot method for class "SOM" plots a stars plot of the representative at each grid point.

Value

For somgrid, an object of class "somgrid", a list with components

`pts`	a two-column matrix giving locations for the grid points.
`xdim, ydim, topo`	as in the arguments to `somgrid`.

References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.