purelin (Neural Network Toolbox)

Linear transfer function

A = purelin(N)
info = purelin(code)

purelin is a transfer function. Transfer functions calculate a layer's output from its net input.

purelin(N) takes one input,

N - S x Q matrix of net input (column) vectors.

and returns N.

purelin(code) returns useful information for each code string:

'deriv' - Name of derivative function.

'name' - Full name.

'output' - Output range.

'active' - Active input range.

Examples

Here is the code to create a plot of the purelin transfer function.

n = -5:0.1:5;
a = purelin(n);
plot(n,a)

You can create a standard network that uses purelin by calling newlin or newlind.

To change a network so a layer uses purelin, set net.layers{i}.transferFcn to 'purelin'.

In either case, call sim to simulate the network with purelin. See newlin or newlind for simulation examples.

purelin(n) = n