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 |

`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 |

### References

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

### See Also

[Package

*class*version 7.3-22 Index]