somgrid {class} | R Documentation |

## 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.

### See Also

`batchSOM`

, `SOM`

[Package

*class* version 7.2-23

Index]