class (version 7.3-17)

somgrid: Plot SOM Fits

Description

Plotting functions for SOM results.

Usage

somgrid(xdim = 8, ydim = 6, topo = c("rectangular", "hexagonal"))
# S3 method for somgrid
plot(x, type = "p", ...)
# S3 method for 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.

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.

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.

References

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

See Also

batchSOM, SOM