randtop (Neural Network Toolbox)

Neural Network Toolbox

randtop

Random layer topology function

Syntax

pos = randtop(dim1,dim2,...,dimN)

Description

randtop calculates the neuron positions for layers whose neurons are arranged in an N dimensional random pattern.

randtop(dim1,dim2,...,dimN)) takes N arguments,

dimi -- Length of layer in dimension i

and returns an N x S matrix of N coordinate vectors, where S is the product of dim1*dim2*...*dimN.

Examples

This code creates and displays a two-dimensional layer with 192 neurons arranged in a 16-by-12 random pattern.

```
pos = randtop(16,12); plotsom(pos)
```

This code plots the connections between the same neurons, but shows each neuron at the location of its weight vector. The weights are generated randomly so that the layer is very unorganized, as is evident in the plot.

```
W = rands(192,2); plotsom(W,dist(pos))
```

See Also

gridtop, hextop

rands revert