Hexagonal layer topology function
hextop calculates the neuron positions for layers whose neurons are arranged in an N-dimensional hexagonal pattern.
hextop(dim1,dim2,...,dimN) takes N arguments,
Length of layer in dimension i
and returns an N-by-S matrix of N coordinate vectors where S is the product of dim1*dim2*...*dimN.
This code creates and displays a two-dimensional layer with 40 neurons arranged in an 8-by-5 hexagonal pattern.
pos = hextop(8,5); net = selforgmap([8 5],'topologyFcn','hextop'); plotsomtop(net)