Plot SOM Fits — somgrid • class

Plotting functions for SOM results.

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.

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