plotsomnd

Plot self-organizing map neighbor distances

Syntax

plotsomnd(net)

Description

plotsomnd(net) plots a SOM layer showing neurons as gray-blue patches and their direct neighbor relations with red lines. The neighbor patches are colored from black to yellow to show how close each neuron’s weight vector is to its neighbors.

This plot supports SOM networks with hextop and gridtop topologies, but not tritop or randtop.

Examples

Plot SOM Neighbor Distances

x = iris_dataset;
net = selforgmap([5 5]);
net = train(net,x);

Figure Neural Network Training (09-Aug-2025 13:43:10) contains an object of type uigridlayout.

plotsomnd(net)

Figure SOM Neighbor Distances (plotsomnd) contains an axes object. The axes object with title SOM Neighbor Weight Distances contains 137 objects of type patch, line.

Version History

Introduced in R2008a

See Also

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