gridtop (Neural Network Toolbox)

Neural Network Toolbox

gridtop

Grid layer topology function

Syntax

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

Description

gridtop calculates neuron positions for layers whose neurons are arranged in an N dimensional grid.

gridtop(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 40 neurons arranged in a 8-by-5 grid.

```
pos = gridtop(8,5); 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 the layer is very disorganized as is evident in the plot generated by the following code.

```
W = rands(40,2); plotsom(W,dist(pos))
```

See Also

hextop, randtop

getx hardlim