a visualized SOM of the iris data

som-iris
-> Plotting Eight Direction Arranged Maps or Self-Organizing Maps
-> SOM package in R
-> EDAM in R

Same plot, but SOM with a finer grid:
som-iris-2
(Obviously there are not enough data sets to do that)

EDAM-Plot of Iris:
edam-iris
Raabe, N. (2003). Vergleich von Kohonen Self-Organizing-Maps mit einem nichtsimultanen Klassifikations- und Visualisierungsverfahren. Diploma Thesis, Department of Statistics, University of Dortmund.
-> Raabe + Diplomarbeit

Diplomarbeit vergleicht SOM + EDAM hinsichtlich Visualisierungs- (=Topologie-Erhaltungs-)-Güte und Klassifizierungsgüte. Conclusio: SOM erhält räumliche Distanzen (=Toplogie) besser, EDAM klassifiziert besser (Unterschied sei aber bei hochdimensionalen Daten möglicherweise weniger stark).

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